March 2019 - Random - Mailing list — Dipartimento di Matematica, UniPI

Concorso da RTDb di MAT/06 a Padova - scadenza 25/8/2016
by Marco Ferrante 25 Jun '24

25 Jun '24

Cari colleghi, vi segnalo che il Dipartimento di Matematica dell'Università di Padova ha bandito un posto di ricercatore di tipo B nel settore MAT/06. Il bando è disponibile alla pagina http://www.math.unipd.it/it/news/?id=1898 La scadenza per la presentazione delle domande è il 25 agosto 2016. Marco Ferrante

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Seminario KOLOKOLTSOV @ UniTo
by Cristina Zucca 14 Oct '19

14 Oct '19

********************************************************************* SEMINARI DI PROBABILITA' E STATISTICA MATEMATICA DIPARTIMENTO DI MATEMATICA "G. PEANO" UNIVERSITA' DEGLI STUDI DI TORINO ********************************************************************* Martedì 17 Aprile 2018 alle ore 15:00 in Aula Marro presso il Dipartimento di Matematica "G. Peano" dell'Università degli Studi di Torino, Via Carlo Alberto 10, Il Prof. *VASSILI KOLOKOLTSOV* terrà un seminario dal titolo *Recent developments in probabilistic and analytic methods for fractional differential equations * Abstract: We shall discuss recent achievements in solving fractional differential equations and their extensions arising from generalized fractional calculus. Probabilistic techniques will be derived from the notion of Markov processes interrupted on the attempt to cross the boundary. Analytic techniques will cover generalized operator-valued Mittag-Leffler functions and chronological Feynman-Kac formulas. Tutti gli interessati sono invitati a partecipare. -- Dr. Cristina Zucca Department of Mathematics University of Torino Via Carlo Alberto 10 10123 Torino, Italy tel: +39-011-6702850 fax: +39-011-6702878

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Open postdoctoral position in stochastic processes at BCAM, Bilbao, Spain
by Gianni Pagnini 29 Mar '19

29 Mar '19

Dear colleagues, I would like to bring to your attention the opening of a two-years postdoc position at BCAM – Basque Center for Applied Mathematics in Bilbao, Basque Country, Spain. The research is mainly intended for the development of stochastic processes for modelling anomalous and fractional diffusion with application in complex systems. The research program is described in the attached document and information on the call can be found at the link http://www.bcamath.org/en/research/job/ic2019-spring-postdoctoral-fellowshi… <http://www.bcamath.org/en/research/job/ic2019-spring-postdoctoral-fellowshi…> The deadline for application is the 30th of April 2019. Please, feel free spread this announcement to interested candidates. For any question you can contact me: gpagnini(a)bcamath.org <mailto:gpagnini@bcamath.org> Best regards, Gianni — Gianni Pagnini Ikerbasque Research Associate BCAM - Basque Center for Applied Mathematics Alameda de Mazarredo, 14 E-48009 Bilbao, Basque Country - Spain Tel. +34 946 567 842 gpagnini(a)bcamath.org | www.bcamath.org/gpagnini ( matematika mugaz bestalde )

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Seminari Prof.ssa Y. Mishura
by Enrica Pirozzi 29 Mar '19

29 Mar '19

AVVISO di SEMINARI Stochastic calculus for fractional processes: stochastic integration, stochastic differential equations Prof.ssa Yuliya Mishura Head of the Department of Probability Theory, Statistics and Actuarial Mathematics, Taras Shevchenko National University of Kyiv Abstract: (Part I) We consider elements of fractional calculus, definition, properties and representations of fractional Brownian motion (fBm), stochastic integration with respect to fBm, stochastic differential equations with fBm. Special attention will be paid to particular equations: fractional Langevin equations, fractional Cox-Ross-Ingersoll equation. Advanced topics of fractional processes: fractional irregularity, representation results, statistical applications (Part II) We consider several advanced topics concerned with fractional Brownian motion (fBm): the behavior of maximal functionals for small values of Hurst index, integral representations with adapted integrand with respect to fBm, statistical inference for fBm-driven stochastic differential equations. I seminari si terranno il 4 Aprile 2019 ore 14:30 e 11 Aprile 2019 ore 14:30 in Aula E terzo livello del Dipartimento Matematica e Applicazioni, Università di Napoli FEDERICO II, Complesso di Monte Sant'Angelo, Via Cintia, Napoli. Enrica Pirozzi -- 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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2 PhD positions at the University of Oslo
by Emanuela Rosazza 28 Mar '19

28 Mar '19

Inoltro il seguente annuncio da parte di Giulia Di Nunno. Un saluto cordiale, Emanuela ---- Dear Colleagues, this is to draw your attention to the call for 2 PhD positions at the University of Oslo in stochastic analysis and its applications to finance, insurance, energy and risk. The deadline of application is April 7th, 2019 For information read here: https://www.jobbnorge.no/en/available-jobs/job/166328/phd-research-fellow-i… Please help to advertise these calls and bring them to the attention of your colleagues and possible candidates. Thank you in advance! Best wishes Giulia --- Giulia di Nunno Professor Department of Mathematics University of Oslo http://folk.uio.no/giulian/

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Politecnico di Milano - Seminario Hron e Machalova
by Alessandra Menafoglio 27 Mar '19

27 Mar '19

Si avvisa che in data 2-4-2019, alle ore 15:00 precise, presso l'Aula Seminari "F. Saleri" VI piano, Dipartimento di Matematica, Politecnico di Milano, si svolgerà il seguente seminario: Relatori Karel Hron e Jitka Machalova, Palacky University Olomouc, Czech Republic Titolo Simplicial splines for representation of density functions Abstract In the context of functional data analysis, probability density functions as non-negative functions are characterized by specific properties of scale invariance and relative scale which enable to represent them with the unit integral constraint without loss of information. On the other hand, all these properties are a challenge when the densities need to be approximated with spline functions, including construction of the respective B-spline basis. The Bayes space methodology of density functions enables to express them as real functions in the standard L2 space using the clr transformation. The resulting functions possess the zero integral constraint. This is a key to propose a new B-spline basis, holding the same property, and consequently to build a new class of spline functions, called simplicial splines, which can approximate probability density functions in a consistent way. The contribution provides also construction of smoothing simplicial splines and possible orthonormalization of the B-spline basis which might be useful in some applications. Finally, a concise analysis using simplicial splines is demonstrated with anthropometric data for the case of simplicial functional principal component analysis. Tutti gli interessati sono invitati a partecipare. Cordiali saluti, Alessandra Menafoglio -- Alessandra Menafoglio MOX - Dept. of Mathematics Politecnico di Milano Piazza Leonardo da Vinci, 32, 20133, Milan Italy Phone: +39 02 2399 4642 Email: <mailto:alessandra.menafoglio@polimi.it> alessandra.menafoglio(a)polimi.it

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Seminario De Palma a Pisa
by Dario Trevisan 27 Mar '19

27 Mar '19

Cari tutti, giovedì 4 aprile, alle ore 14:30, presso la Sala Riunioni del Dipartimento di Matematica (primo piano) dell'Università degli studi di Pisa si terrà il seguente seminario: (Dear all, on Thursday, April 4th, 2:30 PM, the following talk will take place in Sala Riunioni, Dipartimento di Matematica, University of Pisa:) SPEAKER: Giacomo De Palma (University of Copenhagen) TITLE: Random deep neural networks are biased towards simple functions ABSTRACT: We prove that the binary classifiers of bit strings generated by random wide deep neural networks are biased towards simple functions. The simplicity is captured by the following two properties. For any given input bit string, the average Hamming distance of the closest input bit string with a different classification is at least sqrt(n/(2πlog(n))), where n is the length of the string. Moreover, if the bits of the initial string are flipped randomly, the average number of flips required to change the classification grows linearly with n. On the contrary, for a uniformly random binary classifier, the average Hamming distance of the closest input bit string with a different classification is one, and the average number of random flips required to change the classification is two. Our proof is based on the recent breakthrough in machine learning stating that random deep neural networks behave as Gaussian processes. Our results are confirmed by numerical experiments on deep ne ural networks with two hidden layers, and settle the conjecture stating that random deep neural networks are biased towards simple functions. The conjecture that random deep neural networks are biased towards simple functions was proposed and numerically explored in [Valle Pérez et al., arXiv:1805.08522] to explain the unreasonably good generalization properties of deep learning algorithms. By providing a precise characterization of the form of this bias towards simplicity, our results open the way to a rigorous proof of the generalization properties of deep learning algorithms in real-world scenarios. -- Dario Trevisan, Università degli Studi di Pisa, Dipartimento di Matematica, Largo Bruno Pontecorvo 5, 56127 - Pisa (PI) Italy telephone: (+39) 050 2213832 mobile: (+39) 331 2899761 Skype: dario-trevisan e-mail: dario.trevisan AT unipi.it webpage: http://people.dm.unipi.it/trevisan/

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Annonce Postdoc -- Paris Dauphine
by Niccolo Torri 26 Mar '19

26 Mar '19

Ricevo e inoltro. Buona giornata, Niccolò Torri Post-Doc Université Paris-Est Créteil, LAMA, Bat. P2, 61 Av. Général de Gaulle, 94010 Créteil, Bureau P2-232 http://perso.math.u-pem.fr/torri.niccolo/index.html %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Dear all, We are pleased to announce the opening of a 12-month post-doctoral position as part of the ANR MALIN (Interactive Random Walks) for the 2019/20 academic year, with flexible start and end dates. The themes of the ANR are - Gaussian Free Field (GFF), Branching Random Walks (BRW), and Random Interlacements - Random walks in random environments (RWRE) - Self-Interacting random walks (SIRW) - Particle systems, forest fires and percolation but all applications in the field of probability/statistical physics related to these themes will also be carefully considered. The candidate will be affiliated to CEREMADE, Université Paris-Dauphine (*). The file must consist of the following documents: - Curriculum vitae - List of publications - Research statement - 2 letters of recommendation Applications should be sent as soon as possible, and in any case before 3 April 2019, via the CNRS website : https://emploi.cnrs.fr/Offres/CDD/UMR7534-JULPOI-001/Default.aspx With kind regards, Pierre Tarrès (*) PS: Here is the list of Parisian members of the ANR MALIN: Elie Aidekon, Sorbonne Université Anne-Laure Basdevant, Université Paris Nanterre Eric Brunet, Sorbonne Université Bernard Derrida, Sorbonne Université/Ecole Normale Supérieure Paris Laure Dumaz, Université Paris Dauphine Nathalie Eisenbaum, Université Paris Descartes Nathanaël Enriquez, Université Paris-Sud Anna Erschler, Ecole Normale Supérieure Paris Gabriel Faraud, Université Paris Nanterre Nicolas Fournier, Sorbonne Université Yueyun Hu, Université Paris 13 Cyrille Lucas, Université Paris Diderot Titus Lupu, Sorbonne Université Satya Majumdar, Université Paris-Sud Bastien Mallein, Université Paris 13 Julien Poisat, Université Paris Dauphine Olivier Raimond, Université Paris Nanterre Grégory Schehr, Université Paris-Sud Zhan Shi, Sorbonne Université François Simenhaus, Université Paris Dauphine Damien Simon, Sorbonne Université Arvind Singh, Université Paris-Sud Pierre Tarrès, Université Paris Dauphine (en détachement à NYU Shanghaï) Laurent Tournier, Université Paris 13 Olivier Zindy, Sorbonne Université

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Assegno di ricerca all'Aquila
by davide gabrielli 25 Mar '19

25 Mar '19

Si segnala l'assegno di ricerca dal titolo "Comportamento su larga scala di particelle in interazione" Responsabile Prof. Anna De Masi, presso L' UNIVERSITA DEGLI STUDI DELLAQUILA DIPARTIMENTO DI INGEGNERIA E SCIENZE DELLINFORMAZIONE E MATEMATICA. Il bando e' reperibile all'indirizzo http://www.univaq.it/section.php?id=766 ed e' anche in allegato al presente messaggio. Scadenza 09/04/2019 cordiali saluti Davide Gabrielli

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extended deadline: 2019 Bocconi Summer School on Random Graphs
by Antonio Lijoi 25 Mar '19

25 Mar '19

************************************************************* Applications are still open for the 2019 edition of the Bocconi Summer School in Advanced Statistics & Probability on RANDOM GRAPHS AND COMPLEX NETWORKS (July 8-19, 2019) INFO: http://bocconi2019.lakecomoschool.org EXTENDED DEADLINE FOR APPLICATIONS: April 2, 2019 ************************************************************* --- Dai il tuo 5x1000 alla Bocconi. Aiuta gli studenti meritevoli a costruire il proprio futuro. CF 80024610158. www.unibocconi.it/5x1000 Please note that the above message is addressed only to individuals filing Italian income tax returns. 5x1000 is a percentage of Italian personal income tax that taxpayers can allocate to Universities, scientific research and non profit organizations. ---

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