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Seminar announcement, prof A. Cerny - LUISS G. Carli Roma
by Sara 27 Mar '17

27 Mar '17

Dear all, Professor A. Cerny from Cass will be visiting LUISS and on Tuesday April 4, at 12 in Room A410 -- viale Romania he will give the following seminar: *Optimal trade execution under endogenous pressure to liquidate: theory and numerical solutions* We study optimal liquidation of a large trading position in a market with a temporary price impact. We endogenize the pressure to liquidate and hence allow the time horizon of liquidation to be determined endogenously, as part of the optimal strategy. The corresponding HJB equation leads to a severely singular initial value problem whose numerical solution we also study. In contrast to much of the existing literature spreading the liquidation strategy over a longer horizon is not necessarily beneficial to the trader. Joint work with Pavol Brunovský and Ján Komadel, Comenius University Bratislava -- Sara Biagini, Professor of Mathematical Finance Department of Economics and Finance LUISS Guido Carli Address: viale Romania, 32 - 00197 Roma Web: http://sites.google.com/site/sarabiagini/

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Seminario a Firenze 28/3: Statistical inference of supOU and mixed moving average processes, Imma Curato
by Cecilia Mancini 27 Mar '17

27 Mar '17

Nell'ambito del ciclo di seminari del Dipartimento di Scienze per l'Economia e l'Impresa (DISEI) dell'Universita' di Firenze Martedì 28 Marzo 2017 (Edificio D6/Aula Bracco) ore 14.00 Imma Curato (Ulm University) terrà un seminario dal titolo: "Statistical inference of supOU and mixed moving average processes" ----- Tutti gli interessati sono cordialmente invitati a partecipare. La lista dei seminari Disei è raggiungibile al seguente indirizzo: http://www.disei.unifi.it/vp-104-seminari.html

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PhD in Economics, Ca' Foscari University of Venice - Call for application 2017-18
by Antonella Basso 22 Mar '17

22 Mar '17

Dear Colleague, I would be grateful if you could bring to the attention of your best students the new edition 2017-2018 of the PhD Program in Economics offered by the Ca' Foscari University of Venice. The PhD Program in Economics aims at training selected students for a career as economists in academic institutions or in research departments of national and international organizations, public institutions, private corporations, central banks, financial institutions. Here <http://www.unive.it/pag/fileadmin/user_upload/scuole/graduate/documenti/201…> you can find the first placement of last years' PhDs. The considerable diversification of research areas covered by the members of Department of Economics and their international reputation provide an excellent environment where students of most fields in economics can find research ideas and tight guidance for their doctoral studies. The PhD program has a duration of _four years.__ ___ For the academic year 2017-2018, 5 positions are available, all of them come with a scholarship (around 13,700 € per year). Deadline for application is *April 27th* 2017, 13h00 (Italian time). Information and application procedure can be found at http://www.unive.it/phdapplication <http://www.unive.it/phdapplication> Information on the PhD in Economics can be found at http://www.unive.it/phdeconomics <http://www.unive.it/phdeconomics> Any questions on the program may be addressed to sse(a)unive.it <mailto:sse@unive.it> I also attach to this email a flyer I would be grateful if you could print and post in your department. Finally, two ExSIDE doctoral position based in Venice are still open. ExSIDE is an innovative training program that will give successful applicants a double/joint PhD degree from two universities. Project n. 2 deals with experimental economics in broad sense; project n. 15 will develop agent-based models of tax evasion. Further details can be found at http://exside-itn.eu/ . Successful candidates will get a generous scholarship (the gross monthly wage is above 3000€). Thank you for your cooperation Best regards Antonella Basso -- Antonella Basso Prorettore alla Programmazione e Valutazione - Prorector at Planning and Valuation Dipartimento di Economia Università Ca' Foscari Venezia Fondamenta S. Giobbe - Cannaregio 873 30121 Venezia - Italy Tel. +39-041-2346914 E-mail address: basso(a)unive.it Web page: http://www.unive.it/data/persone/5591751

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Politecnico di Milano - Seminario Eva Fiserova e Karel Hron
by Laura M. Sangalli 21 Mar '17

21 Mar '17

Si avvisa che in data 06-04-2017, alle ore 14:00 precise, presso l'Aula Seminari "F. Saleri" VI piano - Dipartimento di Matematica, Politecnico di Milano, nell'ambito delle iniziative MOX, si svolgerà il seguente seminario: Relatori: Eva Fiserova e Karel Hron, Palacky University, Olomouc, Czech Republic Titolo: Regression analysis for compositional data from perspective of the logratio approach Sommario: Regression analysis is an important tool for analysing the relationships between the response variable and known explanatory variables. When the response variables or explanatory variables are compositional, i.e. multivariate observations carrying only relative information (proportions, percentages), a special treatment in regression is necessary. Compositional data are characterized by the simplex sample space with the Aitchison geometry that forms the Euclidean structure. Proper statistical methodology for this kind of observations is the logratio methodology that enables to express the data isometrically in the real Euclidean space where it is possible to apply standard statistical tools (Aitchison, 1986; Pawlowsky-Glahn et al., 2015). The lecture is focused on three main regression tasks, where compositional data are involved: either regression with a compositional response variable, or regression with compositional explanatory variables, or regression between parts of a composition. The main methodological approach for dealing with compositional regression is based on orthonormal logratio coordinates. Although regression models in orthonormal logratio coordinates are theoretically well justified, both the normalizing constants to reach orthonormality and the natural logarithm itself result in quite a complex interpretation of the regression parameters. In the lecture, we will present new orthogonal logratio coordinates (Muller et al., 2017) in order to achieve better interpretability of regression parameters while preserving all important features of regression models for compositional data. Theoretical results will be applied to real-world examples. Docente di riferimento: Alessandra Menafoglio, alessandra.menafoglio(a)polimi.it Tutti gli interessati sono invitati a partecipare. Cordiali saluti, Laura Sangalli -- Laura Maria Sangalli MOX - Dipartimento di Matematica Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano - Italy tel: +39 02 2399 4554 fax: +39 02 2399 4568 email: laura.sangalli(a)polimi.it url: http://mox.polimi.it/~sangalli

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Seminar by Matteo Basei in Padova
by Giorgia Callegaro 20 Mar '17

20 Mar '17

Dear all, this is to announce a seminar which will be given by Matteo Basei (Université Paris VII) at the Mathematics Department of the University of Padova. The title and all the details follow: *Title* : *Coordination of centralized and distributed generation: a linear-quadratic McKean-Vlasov control problem* *Date and time*: 29 March 2017 at 13 *Room*: 2 BC 30 See you soon, Giorgia Callegaro -- Giorgia Callegaro Assistant Professor Department of Mathematics - University of Padova Via Trieste 63 , I-35121 Padova - ITALY Tel: +39-0498271481 Fax: +39-0498271499 E-Mail: gcallega(a)math.unipd.it <https://webmail.math.unipd.it/horde3/imp/message.php?mailbox=Sent&index=598#> Personal web-page: https://sites.google.com/site/giogiocallegaro/Home

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Annuncio di seminario
by Piccioni, Mauro 20 Mar '17

20 Mar '17

Seminario di probabilità e statistica matematica Lunedì 27 marzo, ore 16:00 Aula di Consiglio del Dipartimento di Matematica “Guido Castelnuovo” Sapienza Università di Roma MASSIMO CAMPANINO (Dipartimento di Matematica, Università di Bologna) Recurrcnce properties for random walks on a two-dimensional random graph. In [1] a random walk on a bi-dimensional random graph was studied. This model had been previously introduced in the physical literature. and studied numerically. It is established in [1] that, in contrast with the corresponding periodic graph, this random walk is transient with probability one with respect to the random environment. Subsequently several papers appeared on related models ([3], [4] [5] [6]). The results of [1] have been used in [7] to study a model of corner percolation on Z2. In [2] transience was obtained on a more general random environment and a transition from recurrence to transience has been proved to occur. At the moment work is going on in collaboration with G. Bosi to study the problem on a honeycomb random graph. [1] M. Campanino, D. Petritis. Random walks on randomly oriented lattices. Markov Process. Relat. Fields 9, 391-412 (2003). [2] M. Campanino, D. Petritis. Type transition of simple random walks on randomly directed regular lattices, J. Appl. Prob. 51, 1065-1080 (2014). [3] B. De Loynes. Marche aleatoire sur un di-graphe et frontière de Martin. C. R. Acad. Sci. Paris 350, 87-90 (2012). [4] A. Devuldier, F. Pene. Random walk in random environment in a two-dimensional stratified medium with orientation. Electron. J. Prob. 18, no. 18 (2013). [5] Guillotin-Plantard, A, Le Ny. A functional limit theorem for a 2D-random walk with dependent marginals. Electron. Commun. Prob. 13, 337-351 (2008). [6] Guillotin-Plantard, A, Le Ny. Transient random walks on 2D-oriented lattice. Theory Prob. Appl. 52, 699-711 (2008). [7] G. Pete. Corner percolation on Z2 and the square root of 17. Ann. Prob. 36, 1711-1747 (2008). Tutti gli interessati sono invitati ad intervenire. Per informazioni rivolgersi a piccioni(a)mat.uniroma1.it

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Applied Bayesian Statistics School - Como- June 19-23, 2017
by Consonni Guido 19 Mar '17

19 Mar '17

We would like to remind you that April, 1st is the deadline for early registration to ABS17 - ABS (Applied Bayesian Statistics) Summer school on MODELING SPATIAL AND SPATIO-TEMPORAL DATA WITH ENVIRONMENTAL APPLICATIONS Villa del Grumello, Como, Italy --- 19-23 June 2017 www.mi.imati.cnr.it/conferences/abs17/home.htm There are many reasons to attend the school. We just mention three of them: 1) The 2017 lecturer is Prof. Bruno Sanso' (University of California at Santa Cruz, USA), an outstanding scholar in Bayesian analysis and modeling with special reference to time series and spatial data. He is the current Editor-in-Chief of Bayesian Analysis, the official ISBA (International Society for Bayesian Analysis) journal, former Member of the Executive Board of TIES (The International Environmetrics Society), former Chair of the ASA (American Statistical Association) Advisory Committee for Climate Change and former Chair of the ISBA Section on Environmental Sciences. 2) The ABS school has a solid reputation in organizing short intensive courses on topics of broad interest. It has been running every year since 2004 with leading researchers presenting state-of-the-art Bayesian methods for applications, combining theoretical lectures and practical sessions, and fostering intereaction among participants in a very stimulating environment. 3) Last but not least, the school will be held in Villa del Grumello, a magnificent villa facing Lake Como, a renowned Italian tourist attraction. Best regards Raffaele Argiento, Guido Consonni and Fabrizio Ruggeri Dipartimento di Scienze Statistiche Università Cattolica del Sacro Cuore Largo Gemelli, 1 20123 Milano; ITALY Ph: +39 02 7234 3049 https://sites.google.com/site/consonnibayes/home Master in Data Science for Management master.unicatt.it/datascience

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Avviso di seminario :: Rue@DSS (Scienze Statistiche, Sapienza)
by Pierpaolo Brutti 17 Mar '17

17 Mar '17

----------------------------------------------------------------------------- A v v i s o d i S e m i n a r i o ----------------------------------------------------------------------------- Giovedì 23 Marzo, ore 11:00am ----------------------------------------------------------------------------- Aula III (terzo piano) Dipartimento di Scienze Statistiche Sapienza Università di Roma HÅVARD RUE (KAUST, http://www.r-inla.org/) terrà un seminario dal titolo PENALISING MODEL COMPONENT COMPLEXITY: A PRINCIPLED PRACTICAL APPROACH TO CONSTRUCTING PRIORS tutti gli interessati sono invitati a partecipare. ----------------------------------------------------------------------------- Saluti Pierpaolo Brutti --- ABSTRACT Setting prior distributions on model parameters is the act of characterising the nature of our uncertainty and has proven a critical issue in applied Bayesian statistics. Although the prior distribution should ideally encode the users’ uncertainty about the parameters, this level of knowledge transfer seems to be unattainable in practice and applied statisticians are forced to search for a “default” prior. Despite the development of objective priors, which are only available explicitly for a small number of highly restricted model classes, the applied statistician has few practical guidelines to follow when choosing the priors. An easy way out of this dilemma is to re-use prior choices of others, with an appropriate reference. In this talk, I will introduce a new concept for constructing prior distributions. We exploit the natural nested structure inherent to many model components, which defines the model component to be a flexible extension of a base model. Proper priors are defined to penalise the complexity induced by deviating from the simpler base model and are formulated after the input of a user-defined scaling parameter for that model component, both in the univariate and the multivariate case. These priors are invariant to reparameterisations, have a natural connection to Jeffreys’ priors, are designed to support Occam’s razor and seem to have excellent robustness properties, all which are highly desirable and allow us to use this approach to define default prior distributions. Through examples and theoretical results, we demonstrate the appropriateness of this approach and how it can be applied in various situations, like random effect models, spline smoothing, disease mapping, Cox proportional hazard models with time-varying frailty, spatial Gaussian fields and multivariate probit models, etc. Further, we show how to control the overall variance arising from many model components in hierarchical models. This is joint work with a lot of people related to the R-INLA project, and is still work in progress.

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Workshop in Robust Finance, 26-28 April 2017 in Zurich
by Matteo Burzoni 16 Mar '17

16 Mar '17

Dear Colleagues, on behalf of the organising committee it is a pleasure to announce that the workshop "Young Researchers in Robust Mathematical Finance" will take place in Zürich on 26-28 April 2017. The keynote speakers are: Beatrice Acciaio (London School of Economics) Francesca Biagini (LMU München) Rama Cont (Imperial College London and CNRS) Alex Cox (University of Bath) Yan Dolinsky (Hebrew University of Jerusalem) Additionally, 14 young researchers working on topics related to robust, model-independent or pathwise mathematical finance will give 30 minute presentations. The workshop will start at 9 a.m. on the 26th and finish around 2 p.m. on the 28th with a plenary discussion involving all the keynote speakers and some professors from ETH. You can find more detailed information on the website of the workshop: https://people.math.ethz.ch/~prodavi/workshop.html. The registration is free of charge, for organizational purposes we kindly ask you to send an email to david.proemel(a)math.ethz.ch no later than 8th of April if you wish to participate. Poster presentations are welcome and encouraged. If you wish to present a poster, please send us title and abstract in your registration email. We look forward to welcoming you in Zürich. Best regards, Matteo Burzoni (ETH Zürich) Ariel Neufeld (ETH Zürich) David Prömel (ETH Zürich) Candia Riga (University of Zürich)

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post-doc positions at Scuola Normale, Pisa
by Davide Erminio Pirino 16 Mar '17

16 Mar '17

Dear all, the Scuola Normale Superiore <http://en.sns.it/> (SNS) has opened two new post-doctoral positions (assegno di ricerca) financed under the SIR program "A New Measure of Liquidity" <https://davidepirino7.wixsite.com/davidepirino/projects> and the SNS <http://normalenews.sns.it/nasce-il-dynamics-and-information-research-instit…> -UniCredit <https://www.unicreditgroup.eu/it/press-media/press-releases/2014/nasce-il--…> collaboration "Dynamics and Information Research Institute". Please follow this link <http://en.sns.it/bando/research-contract-named-%E2%80%9Ctopological-time-se…> to apply for the position "Topological Time Series Analysis" and this link <http://en.sns.it/bando/research-contract-named-%E2%80%9Cmeasures-illiquidit…> to apply for the position "Measures of illiquidity in financial markets using infill asymptotics". The deadline is *April, 3, 2017*. Regards, Davide.

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Invitation to upcoming PhD course
by Daniele Marazzina 15 Mar '17

15 Mar '17

Con preghiera di diffusione To Whom It May Concern >>>>>> Upcoming PhD Course <<<<<<<<<<<<<<<<<<<<<<<<<<<< Giorgia Callegaro (Università degli Studi di Padova) Lucio Fiorin (Università degli Studi di Padova) Daniele Marazzina (Politecnico di Milano) Option Pricing: from Monte Carlo Methods to Quantization The PhD Course (5 CFU) will take place in the Seminar Room of the Third Floor of the Department of Mathematics, Politecnico di Milano, in via Bonardi, 9, Milano, according to the following calendar: > May, 8th: 11am-1pm and 2pm-6pm > May, 9th: 9am-1pm and 2pm-4pm > May, 15th: 11am-1pm and 2pm-6pm > May, 16th: 9am-1pm and 2pm-4pm > May, 17th: 10am-12pm and 1pm-3pm For further details, please contact Daniele Marazzina daniele.marazzina(a)polimi.it Giorgia Callegaro gcallega(a)math.unipd.it >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Abstract: Monte Carlo methods are extensively used in finance to value and analyze complex instruments, portfolios and investments by simulating the various sources of uncertainty affecting their value. The advantage of Monte Carlo methods over other techniques increases as the dimensions (sources of uncertainty) of the problem increase. However, it is well known that the disadvantage of Monte carlo methods is the slow convergence, and thus the high computational cost of the algorithms. Quantization is a way to approximate a random vector or a stochastic process using a nearest neighbour projection on a finite codebook. The birth of quantization dates back to the 1950s, when in the Bell laboratories ad hoc signal discretization procedures were developed for signal transmission. In the last years, Quantization has been deeply considered in numerical probability, especially for solving problems arising in mathematical finance, presenting itself as a de facto alternative to Monte Carlo methods. The purpose of the course is to highlight the characteristics of the two methodologies and to deeply analyze (and implement) their applications in financial context, mainly option pricing.

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UiO - PhD and PostDoc in stochastic analysis available
by Giulia Di Nunno 14 Mar '17

14 Mar '17

Dear Colleagues, this is to bring to your attention the available calls for 2 PhD positions and 1 PostDoc at the Department of Mathematics, University of Oslo. The descriptions are a little different from each other and can interest various candidates. https://www.jobbnorge.no/ledige-stillinger/stilling/135500/phd-research-fel… https://www.jobbnorge.no/ledige-stillinger/stilling/135491/phd-research-fel… https://www.jobbnorge.no/ledige-stillinger/stilling/134569/postdoctoral-res… Please help to distribute the information among your students and contacts. Thank you in advance for your help. Best regards, Giulia -- Giulia Di Nunno Professor Department of Mathematics University of Oslo http://folk.uio.no/giulian/

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PHD Lectures on Stochastic Processes - Prof. Youri Davydov
by Francesca Greselin 14 Mar '17

14 Mar '17

Nelle due prossime settimane, nelle giornate di martedì 21 -venerdì 24, e lunedi 27- giovedì 30 marzo, dalle 9.00 alle 12.00 si terrà un corso di Processi Stocastici, per il Dottorato in Statistica e Matematica per la Finanza, presso l'Università di Milano Bicocca. Le lezioni saranno tenute (in inglese) dal prof. Youri Davydov, del Laboratoire Painlevé, dell'Université Lille 1. La partecipazione al corso è aperta agli interessati, cui è chiesto solo di inviare una mail alla dott.ssa Nicoletta Alghisi, ( nicoletta.alghisi(a)unimib.it) per ragioni organizzative. (di seguito un breve sillabo del corso e bibliografia) PHD Lectures on Stochastic Processes Prof. Youri Davydov Laboratoire Painlevé - Université Lille 1 Syllabus • Definitions and general notions • Examples • Processes with independent increments • Stationary processes • Gaussian processes • Martingales. References 1. Gikhman, I. I., & Skorokhod, A. V. (1969). Introduction to the theory of random processes. Philadelphia: WB Saunders. 2. Lamperti, J. (2012). Stochastic processes: a survey of the mathematical theory (Vol. 23). Springer Science & Business Media. 3. Resnick, S. I. (1992). Adventures in Stochastic Processes, Birkhauser, Boston. -- Francesca Greselin Department of Statistics and Quantitative Methods University of Milano Bicocca Tel +39 02 6448 3118 Fax +39 02 6448 3105 *www.economia.unimib.it/ <http://www.economia.unimib.it/>GRESELIN* google scholar <http://scholar.google.com/citations?user=xOOTbBAAAAAJ&hl=en> researchgate <https://www.researchgate.net/profile/Francesca_Greselin> *Skype: francesca.greseli <francesca.greselin(a)unimib.it>n*

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Avviso di Seminario del Prof. Claudio Macci
by Enrica Pirozzi 14 Mar '17

14 Mar '17

AVVISO di SEMINARIO Asymptotic results for runs and empirical cumulative entropies Prof. Claudio Macci Dipartimento di Matematica Università di Roma Tor Vergata Abstract: We prove large and moderate deviations for two sequences of estimators based on the order statistics and, more precisely, on spacings. In the first case we deal with runs, and we have sums of independent Bernoulli distributed random variables. In the second case we deal with empirical cumulative entropies, and we have linear combinations of independent exponentially distributed random variables. Joint work with Rita Giuliano and Barbara Pacchiarotti. Il seminario si terrà il giorno 16 Marzo 2017 ore 15:00 nella Sala Professori secondo livello del Dipartimento Matematica e Applicazioni, Università di Napoli FEDERICO II, Complesso di Monte Sant'Angelo, Via Cintia, Napoli. -- Enrica Pirozzi Dipartimento di Matematica e Applicazioni Universita' di Napoli FEDERICO II Via Cintia, Monte S.Angelo, 80126, NAPOLI, ITALY Tel. 081 675634 https://www.docenti.unina.it/ENRICA.PIROZZI

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Seminario di Probabilità - Padova
by Paolo Dai Pra 13 Mar '17

13 Mar '17

Ho il piacere di invitarvi al seguente seminario, che si terrà Lunedì 20 Marzo, alle 14:15, in aula 1BC45 della Torre Archimede presso il Dipartimento di Matematica dell'Università degli Studi di Padova. SPEAKER: Francesca Nardi AFFILIATION: Università di Firenze TITLE: Hitting Time Asymptotics for Hard-Core Interactions on Grids ABSTRACT: We consider the hard-core model with Metropolis transition probabilities on finite grid graphs and investigate the asymptotic behavior of the first hitting time between its two maximum-occupancy configurations in the low-temperature regime. In particular, we show how the order-of-magnitude of this first hitting time depends on the grid sizes and on the boundary conditions by means of a novel combinatorial method. Our analysis also proves the asymptotic exponentiality of the scaled hitting time and yields the mixing time of the process in the low-temperature limit as side-result. In order to derive these results, we extended the model-independent framework in Manzo et al. (J Stat Phys 115(1/2):591–642, 2004) for first hitting times to allow for a more general initial state and target subset. Work in collaboration with A. Zocca S. C. Borst Paolo Dai Pra Dipartimento di Matematica Via Trieste, 63 35121 Padova Tel. +39 0498271361 Fax +39 0498271428 daipra(a)math.unipd.it

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Seminario DE IORIO
by Matteo Ruggiero 10 Mar '17

10 Mar '17

************************************************************************ STATISTICS SEMINARS @ COLLEGIO CARLO ALBERTO ************************************************************************ Venerdi 17 Marzo 2017 alle ore 12:00, presso l’Aula Rossa del Collegio Carlo Alberto, Moncalieri (TO), si terra' il seguente seminario: Maria DE IORIO (University College London) DEPENDENT GENERALISED DIRICHLET PROCESS PRIORS We propose a novel Bayesian nonparametric process prior for modelling a collections of random discrete distributions. This process is defined by combining a Generalised Dirichlet Process with a suitable Beta regression framework that introduces dependence among the discrete random distributions. This strategy allows for covariate dependent clustering of the observations. Some advantages of the proposed approach include wide applicability, ease of interpretation and efficient MCMC algorithms. The methodology is illustrated through two real data applications involving acute lymphoblastic leukaemia and London primary schools quality evaluations. Tutti gli interessati sono invitati a partecipare. Il seminario e' organizzato dalla "de Castro" Statistics Initiative (http://www.carloalberto.org/stats <http://www.carloalberto.org/stats>) in collaborazione con il Collegio Carlo Alberto. Cordiali saluti, Matteo Ruggiero --- Matteo Ruggiero University of Torino and Collegio Carlo Alberto www.matteoruggiero.it

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seminari Bernard e Vanduffel in Bicocca
by Fabio Bellini 10 Mar '17

10 Mar '17

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(senza oggetto)
by Piccioni, Mauro 09 Mar '17

09 Mar '17

Lunedì 13 marzo Ore 16:00, Aula di Consiglio, Dipartimento di Matematica, Università Roma La Sapienza Seminario di probabilità e statistica matematica Yosi Rinott, The Hebrew University and LUISS. Title: Differential Privacy applied to common methods of dissemination of frequency tables. When official data are to be disseminated to the public, the agency that releases the data must guarantee the privacy of individuals whose data are to be released. It is not clear how to define and measure privacy. I will explain a notion developed in computer science known as Differential Privacy, and my work (with others) on issues that arise in applying it to the dissemination of frequency tables. Tutti gli interessati sono invitati ad intervenire. Per informazioni rivolgersi a piccioni(a)mat.uniroma1.it

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Reminder - Seminario CARLO SGARRA @ UniTo
by Federico Polito 07 Mar '17

07 Mar '17

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* *::..Reminder..::* Mercoledì 15 Marzo 2017 alle ore 11:30 in Aula C presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. CARLO SGARRA (Politecnico di Milano) terrà un seminario dal titolo A BRANCHING PROCESS-BASED APPROACH TO POWER MARKETS (The talk will be mainly based on a joint paper with Y. Jiao, C. Ma and S. Scotti). Abstract: Energy markets, and in particular, electricity markets, exhibit very peculiar features. The historical series of both futures and spot prices include seasonality, mean-reversion, spikes and small fluctuations. Very often a stochastic volatility dynamics is postulated in order to explain their high degree of variability. After the pioneering paper by Schwartz, where an Ornstein-Uhlenbeck dynamics is assumed to describe the spot price behavior, several different approaches have been investigated in order to describe the price evolution. High frequency trading, on the other hand, introduced some new features in commodity prices dynamics: in a recent paper by V. Filimonov, D. Bicchetti, N. Maystre and D. Sornette evidence is shown of endogeneity and structural regime shift, and in order to quantify this level the branching ratio is adopted as a measure of this endogenous impact and a Hawkes processes dynamics is assumed as a reasonable modelling framework taking into account the self-exciting properties. The purpose of the present investigation is to propose a new modeling framework including all the above mentioned features, still keeping a high level of tractability. The model considered allows to obtain the most common derivatives prices in closed or semi-closed form. Here with semi-closed we mean that the Laplace transform of the derivative price admits an explicit expression. The models we are going to introduce can describe the prices dynamics in two different forms, that can be proved to be equivalent: the first is a representation based on random fields, the second is based on Continuous Branching Processes with Immigration (CBI in the following). Tutti gli interessati sono invitati a partecipare. Un saluto, -- Federico Polito Department of Mathematics University of Torino Via Carlo Alberto, 10 10123, Torino, Italy Email: fpolito(a)unito.it Tel: +39 011 6702862 Web: www.federicopolito.it

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PhD course in GeoStatistics
by Laura M. Sangalli 07 Mar '17

07 Mar '17

The following PhD course in Geostatistics will be held at the Department of Mathematics, Politecnico di Milano The course covers classical and advanced models and methods for the statistical analysis of data with spatial dependence. Lectures include tutorial sessions with the software R. Many case studies will be presented, with applications in the earth-sciences, in the neurosciences and more generally in the life-sciences (including medical imaging), and in the engineering. Lessons: 1 & 2) Kriging: stationary and isotropic random fields; structural properties of the variogram; valid variogram models; variogram estimation; kriging prediction for georeferenced data; drift estimation; kriging for data in Hilbert spaces. Lecturer: A. Menafoglio. 3) Non-parametric techniques. Lecturer: Simone Vantini. 4) Bayesian models for georeferenced data and areal data. Lecturer: A. Guglielmi. 5) Numerical methods for the analysis of spatially distributed data: thin-plate splines; tensor product splines. Lecturer: L. Sangalli. 6) Spatial regression with differential regularization. Lecturer: L. Sangalli. Essential bibliography: - N. Cressie. Statistics for Spatial data. John Wiley & Sons, New York, 1993. - S. Banerjee, B. P. Carlin, and A. E. Gelfand. Hierarchical Modeling and Analysis for Spatial Data. Chapman & Hall / CRC, 2004. - R. Bivand, E. Pebesma, V. Gomez-Rubio. Applied Spatial Data Analysis with R. Springer, 2008 Calendar: Tuesday 7/3, 14:30-17:30, aula del Consiglio, seventh floor; Kriging; Lecturer: Alessandra Menafoglio Thursday 9/3, 10:00-13:00, aula Seminari, sixth floor; Kriging; Lecturer: Alessandra Menafoglio Tuesday 21/3, 14:30-17:30, aula Seminari, sixth floor; Non-parametric techniques; Lecturer: Simone Vantini Thursday 23/3, 14:30-17:30, aula Seminari, sixth floor; Bayesian models for georeferenced data and areal data; Lecturer: Alessandra Guglielmi Tuesday 28/3, 14:30-17:30, aula Seminari, sixth floor; Numerical methods for the analysis of spatially distributed data; Lecturer: Laura Sangalli Thursday 30/3, 14:30-17:30, aula Seminari, sixth floor; Spatial regression with differential regularization; Lecturer: Laura Sangalli People interested to attend are kindly requested to write an email to laura.sangalli(a)polimi.it -- Laura Maria Sangalli MOX - Dipartimento di Matematica Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano - Italy tel: +39 02 2399 4554 fax: +39 02 2399 4568 email: laura.sangalli(a)polimi.it url: http://mox.polimi.it/~sangalli

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de Finetti risk seminar - March 2017
by Emanuela Rosazza 06 Mar '17

06 Mar '17

On behalf of the Scientific Committee of the de Finetti Risk Seminars, we are glad to invite you to participate at the following Lecture TITLE: Duality formulas for robust pricing and hedging in discrete time Patrick Cheridito ETH Zurich ABSTRACT: In this paper we derive robust super- and subhedging dualities for contingent claims that can depend on several underlying assets. In addition to strict super- and subhedging, we also consider relaxed versions which, instead of eliminating the shortfall risk completely, aim to reduce it to an acceptable level. This yields robust price bounds with tighter spreads. As applications we study strict super- and subhedging with general convex transaction costs and trading constraints as well as risk based hedging with respect to robust versions of the average value at risk and entropic risk measure. Our approach is based on representation results for increasing convex functionals and allows for general financial market structures. As a side result it yields a robust version of the fundamental theorem of asset pricing. Joint work with Michael Kupper and Ludovic Tangpi. LOCATION: The seminar will be held on Wednesday, March 15, at 18.00, Aula di rappresentanza, Dept. of Mathematics, Milano University, Via C. Saldini 50, Milano. A refreshment will be offered at 17.30. Scientific Committee Prof. Simone Cerreia-Voglio (Univ. Bocconi) Prof. Marco Frittelli (Univ. degli Studi di Milano) Prof. Fabio Maccheroni (Univ. Bocconi) Prof. Massimo Marinacci (Univ. Bocconi) Prof. Emanuela Rosazza Gianin (Univ. Milano-Bicocca) Dott. Marco Maggis (Univ. degli Studi di Milano) **************************************************** Emanuela Rosazza Gianin Dipartimento di Statistica e Metodi Quantitativi Università di Milano Bicocca Edificio U7 – 4° Piano Via Bicocca degli Arcimboldi, 8 20126 Milano Tel. 02 64483208 Fax. 02 64483105 e-mail: emanuela.rosazza1(a)unimib.it *****************************************************

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Fwd: Bocconi Summer School in Statistics & Probability, 10-22 July 2017
by Pietro Muliere 06 Mar '17

06 Mar '17

Oggetto: [Forum SIS] Bocconi Summer School in Statistics & Probability, 10-22 July 2017 --> CALL FOR APPLICATIONS Bocconi Summer School in Advanced Statistics and Probability: "Statistical Causal Learning", July 10-22, 2017 http://spas.lakecomoschool.org We are pleased to announce the "Bocconi Summer School in Advanced Statistics and Probability", organized and sponsored by Bocconi University, Milano, in collaboration with the Lake Como School of Advanced Studies. The aim of the Bocconi Summer School is to establish a track of high level courses on advanced and cutting-edge topics in Statistics and Probability and related areas. The school is open to all interested scholars, but is especially addressed to doctoral students, and possibly to brilliant MSc graduates interested in pursuing doctoral studies in Statistics, Probability, Computer Science, Applied Mathematics, Operation Research and related fields. The School is hosted yearly at Villa del Grumello, on the shores of the Lake of Como, usually in July. The 2017 edition, on "STATISTICAL CAUSAL LEARNING", will take place on 10-22 July, 2017. INSTRUCTORS: * Bernhard Schölkopf (Empirical Inference Department Director, Max Planck Institute for Intelligent Systems, Tubingen); * Ilya Tolstikhin (Research Scientist, Max Plank Institute for Intelligent Systems, Tubingen); * David Lopez-Paz (Researcher at Facebook AI Research, Paris). APPLICATIONS: The School will be open to 30 qualified and selected students. Applications can be submitted BY APRIL 7, 2017, through the form: http://spas.lakecomoschool.org/application-form/ REGISTRATION and FEES. Admitted participants should register by May 7, 2017. The registration fee (450 euro) covers all the school activities and course material; wi-fi connections; all work-days lunches in the beautiful park of Villa del Grumello and accommodation in the Guest House of the Villa and in other facilities in the immediate surroundings for the 2 weeks (July 9 – July 22, 2017). For any further information, please visit the website http://spas.lakecomoschool.org or contact BBS.statistics(a)unibocconi.it

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seminario Università Bicocca
by daniela.bertacchi 06 Mar '17

06 Mar '17

ANNUNCIO DI SEMINARIO Il giorno 13/3/2017 alle ore 15 esatte, in aula 3014 presso il Dipartimento di Matematica e Applicazioni dell'Università di Milano-Bicocca, il professor Rafael De Mattos Grisi (Universidade Federal do ABC -Brasile) terrà un seminario dal titolo A view on maximal spacings in several dimensions tutti gli interessati sono invitati a partecipare. Abstract: Let K be a compact subset of R^d and N a Poisson process on K. The maximal spacing of N on K is defined as the radius of the largest open ball in K, avoiding the points of N. Considering N homogenized with intensity t, Jason('87) studied the behaviour of the maximal spacing of N as t goes to infinity. In 1983, Deheuvels studied the asymptotic behaviour of the k-th maximal spacing considering K a hypercube and measuring the spaces also using hypercubes. More recently Fraiman et.al.('15) studied the non-homogeneous case. In this ongoing work, we try to generalize Jason's results, studying the behaviour of k-th maximal spacing for the homogeneous process. This is a joint work with Pablo Ferrari, from Universidad de Buenos Aires.

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Seminario di Probabilita, Pisa, Mercoledi 8 marzo, ore 11:00
by Carina Geldhauser 06 Mar '17

06 Mar '17

Annuncio Seminario di Probabilita, Pisa, Dipartmento di Matematica, Universita di Pisa Mercoledi, 8 marzo, ore 11:00, Aula Seminari Seminario di Probabilita SPEAKER 1 (ore 11:00): Francesca R. Nardi, University of Florence TITLE: Metastability for General Dynamics with Rare Transitions: Escape Time and Critical Configurations ABSTRACT: Metastability is an ubiquitous physical phenomenon in first order phase transitions. A fruitful mathematical way to approach this phenomenon is the study of rare transitions for Markov chains. For Metropolis chains associated with statistical mechanical systems, this phenomenon has been described in an elegant way through a pathwise approach in terms of the energy landscape associated to the Hamiltonian of the system. In the seminar we will first explain the main results and ideas of this approach and compare it with other existing ones. Then we will provide a similar description in the general rare transitions setup that can be applied to irreversible systems as well. Besides their theoretical content, we believe that our results are a useful tool to approach metastability for non-Metropolis systems such as Probabilistic Cellular Automata. Moreover, we will describe results pertaining to exponential hitting times which range of applicability includes irreversible systems, systems with exponentially growing volumes and systems with a general starting measure. (joint work with Emilio N. M. Cirillo, R. Fernandez, F. Manzo, E. Scoppola and J. Sohier). Dopo una pausa di circa 5min, proseguiamo con SPEAKER 2 (ore 12:00): Valeria De Mattei, Universita di Pisa TITLE: Mean field games with mean field and moderate interactions ABSTRACT: We consider a mean field game where N players interact both inthe cost functionals and in the dynamics. The new feature is that thedynamical interaction is of the so called "moderate" type, intermediatebetween the more classical mean field interaction and a strictly localinteraction. A modification of the classical mean field game scheme ispresented. Convergence to a system of PDEs, the mean field equation forour system, is discussed. Tutti gli interessati sono invitati a partecipare. Per informazioni scrivere a carina.geldhauser(a)dm.unipi.it <mailto:carina.geldhauser@dm.unipi.it>

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Fwd: [World] Summer school on networks, in Berlin (Aug 21-Sep 1 2017)
by Gustavo Posta 06 Mar '17

06 Mar '17

Begin forwarded message: > From: Cécile Mailler <c.mailler(a)bath.ac.uk> > Date: 06 marzo 2017 12.03.15 GMT+01.00 > Subject: [World] Summer school on networks, in Berlin (Aug 21-Sep 1 2017) > > Dear all, > > This is the first announcement of the summer school on > > Probabilistic and statistical methods for networks > to be held at TU Berlin, 21 August - 1 September 2017. > > The summer school will focus on probabilistic and statistical methods for networks. This is an enormously rich topic that has many connections between branches of mathematics, and applications to many other scientific disciplines. The central theme is randomness that may arise in various forms: it can be used to construct models for networks, to analyse networks using statistical methods, or as part of stochastic processes on networks. One strand of the school will consider the theory of statistical physics models on networks; another strand will develop tools of statistical inference in network data; and a third strand investigates applications such as networks in neuroscience, traffic and telecommunication. > > The School is primarily aimed at graduate students, but also at postdocs, working in applied probability or in one of the application fields with strong probabilistic flavour. > > Speakers: > Shankar Bhamidi (North Carolina) > Benedikt Jahnel (Berlin) > Max Klimm (Berlin) > Peter Mörters (Bath) > Tiago Peixoto (Bath) > Jörg Polzehl / Karsten Tabelow (Berlin) > Klaus Obermayer / Wilhelm Stannat (Berlin) > Lenka Zdeborová (Saclay) > > For further details and registration, see https://www.math-berlin.de/academics/summer-schools/2017/randgraph. > Registration will be open from 1 April 2017 until 31 May 2017. > > The summer school is supported by the EPSRC via the Centre for Doctoral Training in Statistical Applied Mathematics (SAMBa) at the University of Bath, the DFG via the Berlin Mathematical School and by the Weierstrass Institute for Applied Analysis and Stochastics, Berlin. > > Please direct scientific questions about the school to the organisers. > We hope to see you in Berlin at the end of August. > > Best wishes, > > Wolfgang König, koenig(a)wias-berlin.de > Cécile Mailler, c.mailler(a)bath.ac.uk > Marcel Ortgiese, m.ortgiese(a)bath.ac.uk > Matt Roberts, mattiroberts(a)gmail.com > Tim Rogers, t.c.rogers(a)bath.ac.uk > _______________________________________________ > World mailing list > World(a)aleanetwork.net > http://aleanetwork.net/cgi-bin/mailman/listinfo/world

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International Conference in Venice - CALL FOR PAPERS - DEADLINE May 31, 2017
by Monica Billio 06 Mar '17

06 Mar '17

16^th INTERNATIONAL CONFERENCE CREDIT 2017 */INTEREST RATES, GROWTH and REGULATION /*Venice, Italy 28-29 September 2017 *GRETA Associati *(Venice, Italy), the *European Investment Fund* (Luxembourg) and *Intesa Sanpaolo* (Milan, Italy) are co-sponsors of a Conference to be held in Venice on September 28-29, 2017. The objective of the Conference is to bring together academics, practitioners and PhD students working in the area of risk management. The conference will provide an opportunity for participants engaged in research at the forefront of this area to discuss both the causes and implications of recent events in financial markets and may, in turn, suggest fruitful directions for future research. The Conference, organised under the auspices of the *Department of Economics of the University Ca' Foscari of Venice*, *ABI - Italian Banking Association *and *European Investment Bank*, is the *sixteenth* of a series dedicated to various aspects of credit risk. Since 2007, the financial crisis has triggered deep changes of various kinds. Central banks have experimented new monetary policies (low interest rates, quantitative easing, forward guidance...). The banking industry has had to develop new asset management strategies and to adjust its credit allocation practices in order to cope with a new environment characterized, in particular, by a prolonged period of very low risk-free returns. Alternatives and complements to commercial banking have continued their progress. Meanwhile, regulatory frameworks have been reshaped all around the world, with the introduction of new requirements or guidelines. All these changes have called for a substantial amount of research to improve the knowledge of the mechanisms at play during the crisis, to design adapted policy tools and to provide a better description of the new economic and financial environment. The organizers encourage submissions of papers on any topic within the overall theme of the conference and in the following areas in particular: * Low interest rates and asset management: emergence of alternative asset classes; changes in banks asset management, repositioning towards wealth management services. * Low interest rates and econometric modelling: Zero Lower Bound; lift off; unconventional monetary policy; default risk; contagion and systemic risk. * Interest rates and alternative financing: venture capital; credit risk in p2p lending/crowdfunding, is there adverse selection? the financing of SMEs; impact on the real economy. * New regulation environment: impact of Basel 4; internal models versus standardized approach; international harmonization; impact of TLAC (total loss absorbent capacity) and IFRS9. The Scientific Committee for the Conference consists of: *Alain Monfort* (CREST-Paris, Programme Chair) *Monica Billio* (Ca' Foscari University of Venice) *Francesca Campolongo* (EU-JRC Unit 'Financial and Economic Analysis') *Helmut Kraemer-Eis* (Head EIF's Research & Market Analysis) *Jan Peter Krahnen* (SAFE - Goethe University) *Steven Ongena* (University of Zurich, SFI & CEPR) *Jean-Paul Renne* (University of Lausanne) *Fulvio Pegoraro* (Bank of France) *Bernd Schwaab* (European Central Bank) CALL FOR PAPERS The final program will include both submitted and invited papers. Acceptances received so far from invited speakers include *Thomas Philippon *(New York University), *Manju Puri* (Duke University) and *Jean-Paul Renne* (University of Lausanne). The Conference will also feature a panel discussion on researchers' and practitioners' views of the major outstanding problems. Those wishing to present a paper at the Conference should submit by *May 31, 2017* to the address given below (preferably in electronic format). Please indicate to whom correspondence should be addressed. Decisions regarding acceptance will be made by *July 10, 2017*. The final version of accepted papers must be received by August 31, 2017. Please send papers to: GRETA Associati San Polo, 2605 - 30125 Venice, ITALY Phone : +39 041 5238178 - Fax : +39 041 5286166 e-mail: credit(a)greta.it <mailto:credit@greta.it> Local Organisers: *Davide Alfonsi* (Intesa Sanpaolo), *Monica Billio* (Ca' Foscari University of Venice & GRETA), *Andrea Giacomelli* (Knowshape & GRETA), *Pier Luigi Gilibert* (European Investment Fund) and *Domenico Sartore* (Ca' Foscari University of Venice & GRETA) IMPORTANT DATES May 31, 2017: Papers submission deadline July 10, 2017: Paper acceptance notification August 31, 2017: Deadline for sending final version of accepted papers More detailed information available on the Conference website: http://www.greta.it/credit/credit2017/credit2017.htm <http://www.greta.it/credit/credit2017/credit2017.htm>

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Seminario C. Ceci a Padova: cambio data e ora
by Giorgia Callegaro 06 Mar '17

06 Mar '17

Carissimi, mi scuso con i non interessati e scrivo per comunicarvi che il seminario della Prof.ssa Claudia Ceci (Università di Chieti-Pescara), dal titolo Credit derivatives and unit-linked life insurance contracts: optimal hedging in partially observable market models avrà luogo, diversamente da quanto indicato in una mia precedente mail, il giorno martedì *14 marzo *2017 alle ore *16.30* presso il Dipartimento di Matematica dell'Universita' di Padova, via Trieste 63, aula 2BC30 (secondo piano). Grazie per l'attenzione, saluti a tutti, Giorgia Callegaro -- Giorgia Callegaro Assistant Professor Department of Mathematics - University of Padova Via Trieste 63 , I-35121 Padova - ITALY Tel: +39-0498271481 Fax: +39-0498271499 E-Mail: gcallega(a)math.unipd.it <https://webmail.math.unipd.it/horde3/imp/message.php?mailbox=Sent&index=598#> Personal web-page: https://sites.google.com/site/giogiocallegaro/Home

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Reminder -- First Italian Meeting on Probability and Mathematical Stastistics
by Federico Polito 04 Mar '17

04 Mar '17

*First Italian Meeting on Probability and Mathematical Statistics* *June 19-22, 2017, Torino, Italy* *Reminder* Website: http://calvino.polito.it/~probstat/torino2017/ The conference website is now updated with the latest available information. Please visit it for more details. *::..* Note that the registration is still open. *Deadline for registration: March 31, 2017* *..::* We are looking forward to meeting you in Torino next June. On behalf of the Organizing Committee, Federico Polito -- Federico Polito Department of Mathematics University of Torino Via Carlo Alberto, 10 10123, Torino, Italy Email: fpolito(a)unito.it Tel: +39 011 6702862 Web: www.federicopolito.it

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Seminario Claudia Ceci a Padova
by Giorgia Callegaro 03 Mar '17

03 Mar '17

Carissimi, il giorno lunedì 13 marzo 2017 alle ore 12.30 presso il Dipartimento di Matematica dell'Universita' di Padova, via Trieste 63, aula 2BC30 (secondo piano), la Prof.ssa Claudia Ceci dell'Università di Chieti-Pescara, terrà un seminario dal titolo Credit derivatives and unit-linked life insurance contracts: optimal hedging in partially observable market models Siete tutti benvenuti! Saluti a tutti, Giorgia Callegaro -- Giorgia Callegaro Assistant Professor Department of Mathematics - University of Padova Via Trieste 63 , I-35121 Padova - ITALY Tel: +39-0498271481 Fax: +39-0498271499 E-Mail: gcallega(a)math.unipd.it <https://webmail.math.unipd.it/horde3/imp/message.php?mailbox=Sent&index=598#> Personal web-page: https://sites.google.com/site/giogiocallegaro/Home

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Fwd: Fwd: Rutgers meeting on math-finance, probability, and pdes (fwd)
by Cecilia Mancini 02 Mar '17

02 Mar '17

-------- Messaggio Inoltrato -------- Oggetto: Fwd: Rutgers meeting on math-finance, probability, and pdes (fwd) Data: Thu, 2 Mar 2017 17:23:04 +0100 (CET) Mittente: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Date: Thu, 2 Mar 2017 10:44:51 -0500 From: Kasper Larsen <kasperl2andrew.cmu.edu(a)gmail.com> Subject: Rutgers meeting on math-finance, probability, and pdes To: Dear friends and colleagues: We are organizing a meeting on mathematical finance, probability theory, and partial differential equations to be held at Rutgers University, New Brunswick, May 17-19, 2017. We are hoping that you can help spread the word through your network. You can find more information here: http://finmath.rutgers.edu/partial-differential-equations-conference The conference seeks to encourage and promote early-career mathematicians: The conference schedule will allow for several contributed talks without parallel sessions. We have limited financial support available from NSF for junior US-located researchers (including graduate students, post docs, and tenure tracks). Priority for travel funding will be given to presenters who are graduate students, other junior mathematicians, and those from underrepresented groups. You can submit requests (for a presentation slot and/or funding) through the above conference webpage. Feel free to forward this email to other interested parties. We hope to see you! On behalf of the organizers, Kasper -- Cheers, Kasper Larsen Associate Professor Dept. of Mathematical Sciences Carnegie Mellon University http://www.math.cmu.edu/math/faculty/larsen.html ----- End forwarded message -----

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Seminario Nien-Lin Liu (Ritsumeikan University, Japan) a Firenze, 6/3/2017
by Cecilia Mancini 02 Mar '17

02 Mar '17

Nell'ambito del ciclo di seminari del Dipartimento di Scienze per l'Economia e l'Impresa (DISEI) dell'Universita' di Firenze, la prossima settimana si terrà il seguente seminario: Lunedì 6 Marzo 2017 (D6/Aula Bracco) ore 14.00: Nien-Lin Liu (Ritsumeikan University, Japan) "Fourier-Malliavin estimators based on discrete measures" Tutti gli interessati sono cordialmente invitati a partecipare. La lista dei seminari Disei è raggiungibile al seguente indirizzo: http://www.disei.unifi.it/vp-104-seminari.html

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Postdoctoral position at BCAM, Bilbao
by Enrico Scalas 02 Mar '17

02 Mar '17

Car* collegh*, Vi prego di diffondere il seguente annuncio alle persone potenzialmente interessate. Non ho inserito il documento con la descrizione del profilo richiesto, ma lo si puo' trovare a: http://www.bcamath.org/documentos_public/archivos/ofertas/BCAM17-PostDoc_Pr… Cordiali saluti, Enrico Scalas Professor of Statistics and Probability Head of Department, Mathematics University of Sussex, UK -- *Dear Colleagues,* *The Basque Centre for Applied Mathematics (BCAM <http://www.bcamath.org/en/>) opened the position <http://www.bcamath.org/en/research/job/ic2016-winter-postdoctoral-fellowshi…> of Postdoctoral Fellow in Modelling and Simulation in Life and Materials Sciences (MSLMS) group*. The selected candidate will work on Bayesian analysis with Hamiltonian Monte Carlo methods in biomedical applications under the supervision of Elena Akhmatskaya <http://www.bcamath.org/en/people/eakhmatskaya> in collaboration with the members of MSLMS <http://www.bcamath.org/en/research/lines/MSLMS> as well as the Researchers in the Joint BioEnergy Institute (JBEI <https://www.jbei.org/>), US DOE, and the Brest Cancer Stem Cells Lab at CIC <http://www.cicbiogune.es/center/about>bioGUNE <http://www.cicbiogune.es/center/about>. The applications of interest include metabolic flux analysis and drug sensitivity prediction. The Hamiltonian Monte Carlo (HMC) and the Mix & Match HMC <https://bird.bcamath.org/handle/20.500.11824/323> implemented in BCAM in-house software HaiCS (*Ha*miltonians *i*n *C*omputational *S*tatistics) will be used as primary sampling tools in Bayesian analysis and developed further. The full description of the position is provided in the attached file. I will highly appreciate if you could distribute this announcement among your colleagues. Many thanks, Best Regards, Elena. Elena Akhmatskaya Ikerbasque Professor Group Leader BCAM - Basque Center for Applied Mathematics Mazarredo 14. 48009 Bilbao, Basque Country, Spain Tel.: +34 946 567 842 <+34%20946%2056%2078%2042> Fax: +34 946 567 843 <+34%20946%2056%2078%2043> e-mail: akhmatskaya(a)bcamath.org Web: www.bcamath.org/en/people/akhmatskaya

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Lecturer Position at Leeds - deadline 6 March
by Elena Issoglio 02 Mar '17

02 Mar '17

Dear Colleagues this is to announce that a Lecturer Position in Financial/Actuarial Mathematics is currently being advertised at the University of Leeds. Note that the deadline for applications is very soon, *Monday 6 March*. Previous research experience in financial mathematics is *not* essential. School/Institute: School of Mathematics, University of Leeds Position: Permanent Lecturer, grade 8 Salary: £39,324 to £46,924 p.a. Closing Date: Monday 06 March 2017 For more info and to apply online, please visit https://jobs.leeds.ac.uk/vacancy.aspx?ref=MAPMA1052 Best wishes, Elena Dr Elena Issoglio Lecturer in Financial Mathematics Office 11.02, School of Mathematics School of Mathematics, University of Leeds, Leeds, LS2 9JT E: e.issoglio(a)leeds.ac.uk<mailto:e.issoglio@leeds.ac.uk> T: 0113 34 3 4660

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Announcement: 8th AMaMeF Conference - MARK THE DATES! (fwd)
by Tiziano Vargiolu 02 Mar '17

02 Mar '17

---------- Forwarded message ---------- Date: Thu, 2 Mar 2017 12:03:29 +0100 From: Giulia Di Nunno <giulian(a)math.uio.no> Caro Tiziano, mi puoi girare questo annuncio sulla lista random? Grazie Un saluto Giulia --------------------------------------- Dear Colleague, on behalf of the organising committee is a pleasure to announce that the 8th AMaMeF Conference will take place in Amsterdam June 19-23, 2017, thanks to the joint efforts of groups at the University of Amsterdam, Radboud University, and ING Bank. With the participation of TopQuants. The conference features plenary lectures and parallel sessions covering the forefront areas of research in theoretical and quantitative finance, risk, insurance. Plenary speaker are: Fred Espen Benth (University of Oslo) Carole Bernard (Grenoble School of Management and Vrije Universiteit Brussel) Bruno Bouchard (Universit? Paris-Dauphine) S?ren Christensen (University of Hamburg) Christa Cuchiero (University of Vienna) Paul Glasserman (Columbia University) Xin Guo (UC Berkeley) Jan Ob??j (University of Oxford) Mikl?s R?sonyi (Alfr?d R?nyi Institute of Mathematics) Follow the developments, the registration procedures, the abstract submission and all see: http://8amamef.nl Please help to distribute this announcement among your all contacts. Welcome to Amsterdam in June! Best regards Giulia Di Nunno Professor Department of Mathematics University of Oslo

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Seminari di probabilità e statistica matematica
by Piccioni, Mauro 01 Mar '17

01 Mar '17

Lunedì 6 marzo Ore 16:00, Aula di Consiglio Seminario di probabilità e statistica matematica Mauro Piccioni Conditional iid structures in exchangeable multivariate distributions: from Marshall-Olkin to “load sharing” models The discovery of a conditional iid structure allows the understanding of the dependence contained in a d-variate distribution as generated by an exogenous latent factor . According to the celebrated de Finetti ‘s theorem this is equivalent to the possibility of defining an infinitely exchangeable sequence of random variables with the given d-marginal. In parametric classes of multivariate distributions, the determination of the values of the parameter corresponding to a structure of this type is a difficult problem which have been solved only in a few cases. In the talk the elegant theory developed by Mai and Scherer for the Marshall-Olkin distribution will be reviewed and some partial results for “load-sharing” models will be presented (joint work with Gerard Letac and Fabio Spizzichino). Tutti gli interessati sono invitati a partecipare. I seminari proseguiranno durante il secondo semestre ogni lunedì con cadenza settimanale.

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Fully Funded PhD Positions for International Students, University of Padova, Italy - Deadline March 28, 2017 1.00 pm (CEST)
by Patrizia Piacentini - PhD 01 Mar '17

01 Mar '17

For the academic year 2017/18 the University of Padova, Italy, offers 15 research fellowships fully funded by Fondazione Cariparo for foreign (non Italian) students to attend Doctoral Courses - *Deadline: 28 March 2017 (1.00 p.m. CEST)* The call for application is available at the following address: http://www.unipd.it/en/node/1053 The announcement concerns a limited number of fully funded grants for foreign (non-Italian) graduate students to be awarded on the basis of qualifications only and requiring no entry examination. The grants include all University and Department fees, full board at the University accommodation and provide an additional personal scholarship of 13.638,47 € per year for a total of 3 years. Doctoral courses will start on *October 1st, 2017* and will end on September 30st, 2020. Application is to be made following carefully the instructions in the announcement. The PhD Course in Statistics ( http://www.stat.unipd.it/fare-ricerca/dottorato-di-ricerca ) highly encourages foreign students to apply for admission. All lectures are given in English. Interested applicants are invited to contact the Course Coordinator (dottorato(a)stat.unipd.it) for any advice. Some summary information about grants and admission procedures for foreign students can be found at http://www.stat.unipd.it/fare-ricerca/ammissione. Prof. Nicola Sartori Coordinator Phd Course in Statistics University of Padova Italy -- Patrizia Piacentini Secretariat PhD Course in Statistics University of Padova tel +39 049 8274167 fax +39 049 8271524 dottorato(a)stat.unipd.it

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Fwd: Two postdoc positions in Roma Tre
by Pietro Caputo 28 Feb '17

28 Feb '17

ricevo e inoltro: ---------- Forwarded message ---------- From: <giuliani(a)mat.uniroma3.it> Date: Tue, Feb 21, 2017 at 2:16 PM Subject: Two postdoc positions in Roma Tre To: giuliani(a)mat.uniroma3.it Dear Colleague, I would like to draw your attention to two 2-years postdoc position in mathematical physics within the project "Universality in Condensed Matter and Statistical Mechanics", funded by an ERC Consolidator Grant (PI: Alessandro Giuliani). Interested candidates should have a strong background in the mathematics of quantum or classical statistical mechanics. The successful applicant will be expected to work on problems related to scaling limits in 2D systems at the critical point, broken phases in systems with continuous symmetry, quantum transport in interacting systems. The appointments are for two years, starting in September 2017 or earlier (we invite applications by March 22, 2017; the call will remain open until the two positions are filled). The position is based at the Department of Mathematics of the University of Roma Tre. It comes with no teaching duties and with traveling funds to attend conferences and workshops. A full description of the project and the position, including details about how to apply can be found on the web page of the project: http://www.mat.uniroma3.it/users/giuliani/public_html/erc_CoG/index.html I would be grateful if you could bring this advertisement to any interested candidate. Thank you in advance, With best regards, Alessandro Giuliani

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seminario Marcello Restelli in Bicocca
by Fabio Bellini 28 Feb '17

28 Feb '17

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Seminario Maren Schmeck a Padova
by Tiziano Vargiolu 27 Feb '17

27 Feb '17

Carissimi, il giorno martedi' 28 febbraio alle ore 15 presso il Dipartimento di Matematica dell'Universita' di Padova, via Trieste 63, sala Riunioni VII piano, la dott.ssa Maren Diane Schmeck dell'Universita' di Colonia terra' un seminario dal titolo ELECTRICITY PRICE MODELING WITH STOCHASTIC TIME CHANGE (joint with SVETLANA BOROVKOVA (VU AMSTERDAM)) ABSTRACT. In this paper, we develop a novel approach to electricity price modeling, based on the powerful technique of stochastic time change. This technique allows us to incorporate the characteristic features of electricity prices (such as seasonal volatility, time varying mean reversion and seasonally occurring price spikes) into the model in an elegant and economically justifiable way. The stochastic time change introduces stochastic as well as deterministic (e.g., seasonal) features in the price process? volatility and in the jump component. We specify the base process as a mean reverting jump diffusion and the time change as an absolutely continuous stochastic process with seasonal component. The activity rate of the stochastic time change can be related to the factors that influence supply and demand. Here we use the temperature as a proxy for the demand and hence, as the driving factor of the stochastic time change, and show that this choice leads to realistic price paths. We derive properties of the resulting price process and develop the model calibration procedure. We calibrate the model to the historical EEX power prices and apply it to generating realistic price paths by Monte Carlo simulations. We show that the simulated price process matches the distributional characteristics of the observed electricity prices in periods of both high and low demand. Cordiali saluti a tutti Tiziano -------------------------------------------------------------------------- Tiziano Vargiolu Dipartimento di Matematica Phone: +39 049 8271383 Universita' di Padova Fax: +39 049 8271428 Via Trieste, 63 E-mail: vargiolu(a)math.unipd.it I-35121 Padova (Italy) WWW: http://www.math.unipd.it/~vargiolu --------------------------------------------------------------------------

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Fwd: Postdoc-position in Stochastic Analysis at the University of Oslo
by Tiziano Vargiolu 27 Feb '17

27 Feb '17

---------- Forwarded message ---------- Date: Sun, 26 Feb 2017 18:35:01 +0100 From: Giulia Di Nunno <giulian(a)math.uio.no> To: Tiziano Vargiolu <vargiolu(a)math.unipd.it> Cc: Giulia Di Nunno <giulian(a)math.uio.no> Subject: Fwd: Postdoc-position in Stochastic Analysis at the University of Oslo Dear Tiziano,could you please help circulate this info. Thank you in advance, Giulia Begin forwarded message: From: Bernt ?ksendal <oksendal(a)math.uio.no> Subject: Postdoc-position in Stochastic Analysis at the University of Oslo Date: 21 February 2017 at 12:15:46 GMT+1 Dear All; The new postdoc position in stochastic analysis at the University of Oslo has just been announced. The deadline is 31 March 2017. For more information see https://www.jobbnorge.no/ledige-stillinger/stilling/134569/postdoctoral-res earch-fellowship-in-stochastic-analysis Please help to distribute this to anyone interested :-) Best wishes, Bernt Professor Emeritus Bernt ?ksendal Department of Mathematics, University of Oslo, Box 1053 Blindern, N-0316 Oslo, Norway. Home page: http://www.mn.uio.no/math/english/people/aca/oksendal/index.html Email: oksendal(a)math.uio.no

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Second Announcement: Stochastic Analysis Day, Pisa, Monday, February 27
by Carina Geldhauser 24 Feb '17

24 Feb '17

Stochastic Analysis Day 2017 The Stochastic Analysis Day 2017 will take place on Monday, February 27 at the Department of Mathematics of the University of Pisa. Speakers: * J.C. Alfonso Lopez (Braunschweig) * L.Bianchi (Berlin) * T. Funaki (Tokyo) * C. Geldhauser (Pisa) * H. Hatzikirou (Braunschweig) *M. Maurelli (Berlin) More information can be found on the website http://www.dm.unipi.it/pages/romito/SPASS/workshop/20170227/ Registration is not obligatory, but highly recommended for organizational purposes. To register, please contact the organizers.

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ARPM job offer
by Elisa Appolloni 23 Feb '17

23 Feb '17

Dear all, I am reaching out to you because at ARPM (the company for which I work) we are looking to add new resources for our Advanced Risk and Portfolio Management program. Would you mind circulating the message below to interested and qualified candidates? Thank you, Elisa Appolloni *** *The firm* ARPM – Advanced Risk and Portfolio Management <https://www.arpm.co/> is a privately held research institution, directed by Attilio Meucci, based in New York City with virtual offices world-wide. ARPM’s mission is to set and disseminate the standards for advanced quantitative risk management and portfolio management across the financial industry: asset management, banking, and insurance. *The opportunity * ARPM is looking for a new researcher-in-training for a minimum period of 6 months, indefinitely extensible. The successful candidate will review and code practical case studies and theoretical examples in quantitative finance, contributing to the ARPM Lab <https://www.arpm.co/lab/books.php?action=page&id=14>. The successful candidate will work full-time, remotely, constantly communicating via multi-media with the other members of ARPM. The ARPM researcher-in-training position represents a great opportunity for candidates with strong academic background, who wish to apply to real problems in finance the rigorous, research-oriented approach acquired in their schooling. *The progression* ARPM emphasizes the constant intellectual growth of its resources. For the first 6 months the researcher-in- training will be focused on specific projects. At the end of this period (s)he will conduct a presentation on the topics covered. Then, (s)he will start broadening his/her scope, attending the presentations of their peers and seniors, working on broader projects, and acquiring hands-on- knowledge of all the topics of the ARPM Lab <https://www.arpm.co/lab/books.php?action=page&id=14>. The approximate time required to attain the required level of familiarity with the ARPM Lab <https://www.arpm.co/lab/books.php?action=page&id=14> is: two years for a recent master’s graduate; one year for a recent PhD graduate. When ready, the researcher-in-training will be tested on all such topics with an exam. If successful, (s)he will conclude his/her training period, attaining the title of ARPM researcher. The ARPM researcher will then engage in highly quantitative projects with ARPM clients, becoming a profit center. *The candidate* [image: arrow_20]Master’s degree in mathematics, physics, engineering, computer science, statistics, data science, quantitative economics. [image: arrow_20]PhD in hard sciences or master’s degree in quantitative finance is a plus. [image: arrow_20]Very strong command of foundational mathematics, including multivariate calculus and linear algebra. [image: arrow_20]Good knowledge of statistics and probability. [image: arrow_20]Proficiency in MATLAB, Python, or similar programming languages. [image: arrow_20]Good command of English. *Compensation* Competitive For more information, please visit arpm.co <https://www.arpm.co/> and/or contact us at info(a)arpm.co <info(a)arpm.co?Subject=job%20Post> -- *ARPM <http://www.arpm.co/>** - Advanced Risk and Portfolio Management**®*

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seminar announcement --- prof Cont, LUISS
by Sara 21 Feb '17

21 Feb '17

Thursday 2nd March from 12.00 to 13.00 LUISS room 207 viale Romania 32 00197 Roma. Speaker: Rama Cont (Imperial College and CNRS) Title: Fire sales, price-mediated contagion and systemic risk -- Sara Biagini, Professor of Mathematical Finance Department of Economics and Finance LUISS Guido Carli Address: viale Romania, 32 - 00197 Roma Web: http://sites.google.com/site/sarabiagini/

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Mini course in Verona - Simone Mattia Scotti: Real markets, microstructure, clusters and Hawkes with a Branching process point of view.
by Luca di persio 20 Feb '17

20 Feb '17

*Mini course announcement* Prof. Simone Mattia Scotti [ LPMA, Université Paris Diderot ] will give a mini course on *Real markets, microstructure, clusters and Hawkes with a Branching process point of view*, according with the following time table: 21st of March (2017) : Room I 1430-1730 23rd of March (2017) : Room M 1530-1730 24th of March (2017) : Room M 1430-1730 all the lessons will take place at the Dept. of Computer Science - UniVr Strada le Grazie, 15 - Verona Ca' Vignal located here https://goo.gl/maps/Yx2JU *Abstract and structure of the course* The analysis of real financial markets, along with the study of related economic time series, represents an increasing field of research and development of effective applications, from the stochastic processes point of views, as well as from the statistic and computational sides of the moon. In this mini-course, we first recall the classical framework behind the modern and mathematically rigorous, theory of finance, starting from the treatment of continuous-path stochastic processes. Then, we focus on the microstructure of market data, discussing both limit and market orders, along with correlated liquidity problems. In a second part, we will specialize our analysis on a particular feature of financial markets, namely the existence of jumps' cluster. It is worth to mention that the latter has been highlighted in recent literature in microstructure, showing to have a deep impact on real markets and representing a main research axis in the field. >From a mathematical point-of-view, we will first introduce point processes and then Hawkes processes. We will show that the self-exciting structure of Hawkes processes can easily explain some features exhibited by financial data, e.g. the cluster effects. In the third part, we will introduce the branching processes (CBI) showing that they can be seen as a natural extension (marked versions) of Hawkes processes. We will show that this class of models has very nice properties from computational as well as from analytical point of view, particularly by exploiting the Dawson-Li representation. Moreover, we will point out some unexpected features of the aforementioned approaches, such, e.g., the persistency of low interest rates and negative risk premium in electricity markets. A detailed bibliograpy will be given during the course. ___________ Do not hesitate to contact me for further details: luca.dipersio(a)univr.it LuCa -- __ Luca Di Persio - PhD assistant professor of Probability and Mathematical Finance Dept. Informatics University of Verona strada le Grazie 15 - 37134 Verona - Italy Tel : +39 045 802 7968 <+39%20045%20802%207968> Dept. Math University of Trento V. Sommarive, 14 - 38123 Povo - Italy Tel : +39 0461 281686 <+39%200461%20281686>

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Mini course in Verona - Adrian Zalinescu : Introduction to SPDEs with applications
by Luca di persio 18 Feb '17

18 Feb '17

*Mini course announcement* Prof. Adrian Zalinescu [ Universitatea Alexandru Ioan Cuza - Iaşi, Romania ] will give a mini course on *Introduction to Stochastic Partial Di fferential Equations* (with applications to Finance, Biology, etc.), according with the following calendar 13 - 20 - 27 of March (2017) time table: from 1430 to 1730 all the lessons will take place at the Dept. of Computer Science - UniVr Strada le Grazie, 15 - Verona Ca' Vignal 2, first floor , *Room M* located here https://goo.gl/maps/Yx2JU The* tentative programme* is the following: 1. *Gaussian measure theory* Random vectors and Bochner integral. Some elements of probability in in nite-dimensional spaces are considered, with emphasis on the integration of random vectors with values in separable Banach-spaces and in operator spaces. Gaussian measures. We introduce cylindrical Gaussian random variables and Hilbert-spacevalued Gaussian random variables and then de ne cylindrical Wiener processes and Q-Wiener processes (i.e. with the covariance given by the trace-class operator Q) in a natural way. Stochastic integral and Ito's formula. The stochastic integral is constructed with respect to a cylindrical Wiener process, then with respect to a Q-Wiener process, by extending the integral of elementary processes. Some properties of the stochastic integral are given, including Ito's formula. 2. *Stochastic Di erential Equations* Semigroup Theory. In this section we review the fundamentals of semigroup theory. Stochastic Convolutions and Linear SPDEs. We derive existence and uniqueness of di erent types of solutions for linear SDEs driven by generators of C0-semigroups. The method is based on the study of the stochastic convolution. Solutions by Variational Method. The purpose is to study solutions of nonlinear SPDEs, which are seen as evolution equations in a Gelfand triplet, under assumptions of compact embedding or monotone coe cients. 3. *Applications* Along the abstract study of SDEs in in nite-dimensional spaces, various examples of SPDEs with applications in physics, biology and mathematical finance will be given. A detailed bibliograpy will be given during the course. ___________ Do not hesitate to contact me for further details: luca.dipersio(a)univr.it LuCa __ Luca Di Persio - PhD assistant professor of Probability and Mathematical Finance Dept. Informatics University of Verona strada le Grazie 15 - 37134 Verona - Italy Tel : +39 045 802 7968 Dept. Math University of Trento V. Sommarive, 14 - 38123 Povo - Italy Tel : +39 0461 281686

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Seminar announcement
by Marco Scarsini 17 Feb '17

17 Feb '17

Thursday 23 February from 12.00 to 13.00 LUISS room 207 viale Romania 32 00197 Roma. *Speaker:* Bruno Ziliotto (CNRS) *Title:* In zero-sum stochastic games, the payoff is constant *Abstract*: In a zero-sum stochastic game, at each stage, two adversary players take decisions and receive a stage payoff determined by these actions and by a random variable called state of nature. The total payoff is the discounted sum of the stage payoffs. Assume that players are very patient and use optimal strategies. We then prove that at any point in the game, players get essentially the same payoff: the payoff is constant. No game theory prerequisite of any kind is needed to understand this talk. (joint work with Miquel Oliu Barton) ******************************************************* Marco Scarsini Dipartimento di Economia e Finanza LUISS Viale Romania 32 00197 Roma, ITALY URL: http://docenti.luiss.it/scarsini/

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Seminario CARLO SGARRA @ UniTo
by Federico Polito 17 Feb '17

17 Feb '17

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* mercoledì 15 Marzo 2017 alle ore 11:30 in Aula C presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. CARLO SGARRA (Politecnico di Milano) terrà un seminario dal titolo A BRANCHING PROCESS-BASED APPROACH TO POWER MARKETS (The talk will be mainly based on a joint paper with Y. Jiao, C. Ma and S. Scotti). Abstract: Energy markets, and in particular, electricity markets, exhibit very peculiar features. The historical series of both futures and spot prices include seasonality, mean-reversion, spikes and small fluctuations. Very often a stochastic volatility dynamics is postulated in order to explain their high degree of variability. After the pioneering paper by Schwartz, where an Ornstein-Uhlenbeck dynamics is assumed to describe the spot price behavior, several different approaches have been investigated in order to describe the price evolution. High frequency trading, on the other hand, introduced some new features in commodity prices dynamics: in a recent paper by V. Filimonov, D. Bicchetti, N. Maystre and D. Sornette evidence is shown of endogeneity and structural regime shift, and in order to quantify this level the branching ratio is adopted as a measure of this endogenous impact and a Hawkes processes dynamics is assumed as a reasonable modelling framework taking into account the self-exciting properties. The purpose of the present investigation is to propose a new modeling framework including all the above mentioned features, still keeping a high level of tractability. The model considered allows to obtain the most common derivatives prices in closed or semi-closed form. Here with semi-closed we mean that the Laplace transform of the derivative price admits an explicit expression. The models we are going to introduce can describe the prices dynamics in two different forms, that can be proved to be equivalent: the first is a representation based on random fields, the second is based on Continuous Branching Processes with Immigration (CBI in the following). Tutti gli interessati sono invitati a partecipare. -- Federico Polito Department of Mathematics University of Torino Via Carlo Alberto, 10 10123, Torino, Italy Email: federico.polito(a)unito.it Tel: +39 011 6702862 Web: www.fpolito.eu

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seminario Matteo Burzoni in Bicocca
by Fabio Bellini 17 Feb '17

17 Feb '17

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Teaching assistantships at LUISS
by Marco Scarsini 16 Feb '17

16 Feb '17

LUISS is looking for teaching assistants for various courses in mathematics, statistics, and computer science for the academic year 2017/2018. Teaching assistants are expected to teach in either English or Italian (not necessarily both), hold office hours, and assist with exams. Whoever is interested should fill out the application form that can be found at the pages http://www.luiss.edu/ateneo/opportunita-di-lavoro/reclutamento-docenti-cont… (Department of Economics and Finance), http://www.luiss.edu/ateneo/opportunita-di-lavoro/reclutamento-docenti-cont… (Department of Management). The deadline is 02 March 2017. I would greatly appreciate if you could inform your graduate students of this opportunity. ******************************************************* Marco Scarsini Dipartimento di Economia e Finanza LUISS Viale Romania 32 00197 Roma, ITALY URL: http://docenti.luiss.it/scarsini/

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Annuncio di seminari
by Piccioni, Mauro 15 Feb '17

15 Feb '17

Il giorno 21 febbraio 2017 presso l'Aula E del Dipartimento di Matematica, Sapienza Università di Roma si terranno i seguenti seminari di Probabilità e Statistica Matematica: Ore 14.30 Wolfgand Woess (TU Graz, Austria) Multidimensional reflected random walk - some results and many questions Abstract: Let (Y_n,V_n) be i.i.d. distributed, with the components r and s-dimensional, respectively. Reﬂected random walk starting at a point x of the positive r-dimensional orthant is deﬁned recursively by X_0 = x, X_n = |X_{n−1}−Y_n|, where |(a_1,...,a_r)| = (|a_1|,...,|a_r|). In R^s, consider the ordinary sum S_n = V_1 +···+V_n . We are interested in (topological) recurrence of the process (X_n,v+S_n) starting at (x,v). While this is quite well understood for refelcted random walk with r=1, in higher dimension (r \geq 2) or with some non-reﬂected coordinates (s \in {1,2}) we have a few basic results and various open questions with some partial answers. This is work with Judith Kloas, with input from Marc Peigne' and Wojciech Cygan. Ore 15.30 Oriane Blondel (CNRS Lyon, France) More random walks on random walks Abstract: We consider a Poissonian distribution of particles performing independent simple random walks. Simultaneously, on top of this system, a random walker evolves with a drift to the right when it is on top of (at least) a particle, to the left when it is on an empty site. We obtain a LLN, CLT and large deviation bounds in high and low density. Joint work with Marcelo Hilario, Renato dos Santos, Vladas Sidoravicius, Augusto Teixeira. Tutti gli interessati sono invitati a partecipare. per informazioni rivolgersi a piccioni(a)mat.uniroma1.it

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