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Seminario Prof.ssa Yuliya Mishura
by Enrica Pirozzi 12 Feb '23

12 Feb '23

*** AVVISO di SEMINARIO Prof.ssa Yuliya Mishura Department of Probability, Statistics and Actuarial Mathematics, Taras Shevchenko National University of Kyiv, Kyiv (Ukraine) TITLE: Cox-Ingersoll-Ross processes, their properties and statistical estimation. Abstract: We consider CIR processes driving by standard Wiener processes and study their properties depending on the number of degrees of freedom. Statistical parameter estimation is discussed. Il seminario si terrà il giorno 15 Febbraio 2023 ore 11:30 nella Aula G del Dipartimento Matematica e Applicazioni, Università di Napoli FEDERICO II, Complesso di Monte Sant'Angelo, Via Cintia, Napoli. Link to Teams: https://teams.microsoft.com/l/meetup-join/19%3aMQ4RZDBo_0G-K_PHxKtktVYAczOG… *** -- 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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Call for expression of interest - Minisymposium proposal on “Mathematics for Machine Learning” - SIMAI 2023
by Antonella Iuliano 11 Feb '23

11 Feb '23

Dear Colleagues, this is an invitation to express your interest to participate as speaker at the minisymposium proposal on “Mathematics for Machine Learning” for the 2023 edition of the bi-annual congress of the Italian Society of Applied and Industrial Mathematics <https://www.simai.eu/> (SIMAI) that will be held in Matera from August 28th to September 1st, 2023. All interested researchers are kindly invited to send an email to antonella.iuliano(a)unibas.it by the end of February 2023. Best Regards, Antonella Iuliano Dr Antonella Iuliano Assistant Professor (RTD-B) in Probability and Mathematical Statistics Department of Mathematics, Computer Science, and Economics <https://portale.unibas.it/site/en/home/about-us/departments-and-schools/art…> (DIMIE) University of Basilicata Viale dell'Ateneo Lucano, n. 10, 85100, Potenza (Italy) e-mail: antonella.iuliano(a)unibas.it <mariagrazia.russo(a)unibas.it> phone: +39 0971205891 mobile: +39 3926786025

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Seminario di Luisa Andreis, Sapienza Università di Roma, 14 Febbraio
by Lorenzo Taggi 09 Feb '23

09 Feb '23

Martedì 14 Febbraio, ore 14:00 Sala di Consiglio, Dipartimento di Matematica, Sapienza Università di Roma *Speaker:* Luisa Andreis, Politecnico di Milano *Abstract:* Rare events for dense random graphs are well described using the theory of large deviations and graphons. When graphs are sparse the picture is less clear, objects that describe globally the graphs and their limits, as graphons do for dense graphs, have not been defined yet. Nevertheless we do have information on how these graphs look like when explored locally from a vertex and this, under some assumptions, gives also information on global properties. In this talk we will give an overview on what is known on rare events in this regime, focusing in particular on large deviation statements on connected components in inhomogeneous random graphs and on links with coagulation processes. This talk is based on joint works with Wolfgang König (WIAS and TU Berlin), Tejas Iyer, Heide Langhammer, Elena Magnanini and Robert Patterson (WIAS).

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ABS23 school: Bayesian Causal Inference in Firenze (June 12-16, 2023)
by Elisa Varini 09 Feb '23

09 Feb '23

Dear all, we are glad to inform you that it is now possible to pay the registration fee (by bank transfer or credit card) for the Applied Bayesian Statistics ABS23 which will be held in Firenze (Italy) on June, 12-16, 2023. Website: http://www.mi.imati.cnr.it/conferences/abs23/ The school is organised by CNR IMATI (Institute of Applied Mathematics and Information Technologies at the Italian National Research Council in Milano), this year in cooperation with the Florence Center for Data Science and the Department of Statistics, Computer Science and Applications at the University of Firenze. The topic will be BAYESIAN CAUSAL INFERENCE. The lecturer will be FAN LI (Duke University, https://scholars.duke.edu/person/fli) with the support by researchers at the University of Firenze. The University of Firenze can issue a certificate stating that the course is worth 3 ECTS credits. Interested students can write to abs23(a)mi.imati.cnr.it Once you register on the school website: http://www.mi.imati.cnr.it/conferences/abs23/ you will receive an email with the link to pay by credit card as well as the information on payment by bank transfer (please note that the early registration fee is available until April, 15th, 2023). Please note that only a very limited number of seats is still available and that Firenze is a very popular tourist place, so that it is better to make arrangements as soon as possible. More details about accommodation are available in the ABS23 website. As in the past (since 2004), there will be a combination of theoretical and practical sessions, along with presentations by participants about their work (past, current and future) related to the topic of the school. OUTLINE: The aim of this course is to introduce the fundamental concepts and the state-of-the-art methods for causal inference under the potential outcomes framework, with an emphasis on the Bayesian inferential paradigm. Topics will cover randomized experiments, common methods for observational studies, such as propensity score, matching, weighting and doubly-robust estimation, heterogeneous treatment effects, sensitivity analysis, instrumental variables, principal stratification, panel data methods, and longitudinal treatments. Recent advances related to high dimensional analysis and machine learning will be naturally incorporated into the discussion. All methods will be illustrated via real world case studies. We hope you will be interested in the school and we would like to meet you in Firenze next year. We invite you also to share the information with people potentially interested. Best regards Elisa Varini and Fabrizio Ruggeri Executive Director and Director of ABS23

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SPASS Seminar: Lihan Wang
by Francesco Grotto 08 Feb '23

08 Feb '23

Dear Colleagues, We would like to invite you to the following SPASS seminar, jointly organized by UniPi, SNS, UniFi and UniSi: Accelerate Sampling Using Birth-Death Dynamics Lihan Wang (Carnigie-Mellon University, Max Planck Institute Leipzig) The seminar will take place on TUE, 14.2.2023 at 14:00 CET in Sala Seminari, Dipartimento di Matematica, Pisa and streamed online at the link below. The organizers, A. Agazzi, G. Bet, A. Caraceni, F. Grotto, G. Zanco https://sites.google.com/unipi.it/spass -------------------------------------------- *Abstract: *In this talk, I will discuss the birth-death dynamics for sampling multimodal probability distributions, which is the spherical Hellinger gradient flow of relative entropy. The advantage of the birth-death dynamics is that, unlike any local dynamics such as Langevin dynamics, it allows global movement of mass directly from one mode to another, without the difficulty of going through low probability regions. We prove that the birth death dynamics converges to the unique invariant measure with a uniform rate under some mild conditions, showing its potential of overcoming metastability. We will also show that on torus, the kernelized dynamics, which is used for numerical simulation, Gamma-converges to the idealized dynamics as the kernel bandwidth shrinks to zero. Joint work with Yulong Lu (UMass Amherst) and Dejan Slepcev (CMU).

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Call of interest for researcher, associate or full professor at Tor Vergata University in Rome
by salvi 08 Feb '23

08 Feb '23

Dear all, The Department of Mathematics of Tor Vergata University in Rome has been selected for the second time in a row as "Department of Excellence in Mathematics" in Italy. The Department aims at hiring mathematicians with an outstanding record of high impact research, excellence and leadership, according to the career age. A call of interest for positions as tenure track Researcher (Italian rtdB/Rtt), Associate or Full Professor in any field of Mathematics (thus including Probability Theory!) can be found with all further details at https://www.mat.uniroma2.it/call.php Thanks for sharing the information with whom might be interested and do not hesitate to contact me for any related question. All the best, Michele Salvi

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Second announcement Summer School on "Khintchine's Inequality: old and,new", Paris, June 26-30 2023 (fwd)
by Michele Gianfelice 07 Feb '23

07 Feb '23

Salve, ricevo e inoltro p.c.. Cordialmente, m.gianfelice ---------- Forwarded message ---------- Date: Tue, 7 Feb 2023 16:20:43 +0100 From: Cyril ROBERTO <cyril.roberto(a)math.cnrs.fr> To: destinataires inconnus: ; Subject: Second announcement Summer School on "Khintchine's Inequality: old and,new", Paris, June 26-30 2023 Dear Colleague, You are cordially invited to participate in the Summer School at the Henri Poincaré Institute (IHP), Paris, June 26-30, 2023. We are pleased to inform you that Piotr Nayar and Krzysztof Oleszkiewicz (Warsaw University) will each give 10 hours of lectures on Khintchine's inequalities. To get more information about this Summer School, please go to the following web page: https://indico.math.cnrs.fr/event/8606/ Registration is free but mandatory. In order to register, go to the "registration" link. Note that the school may have some (limited) financial support for young people (PhD, postdocs). Financial support is up to approximately 500 euros. To ask for said support, please send an email to the organizers at khintchine.IHP.2023(a)outlook.fr Looking very much forward to seeing you in Paris, With all best wishes, The organizers (Ali Barki, James Melbourne and Cyril Roberto) P.S.: Please bring this Summer School to the attention of graduate students, postdocs and colleagues who may be interested. P.P.S.: Sorry for the multiple instances of the same message.

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Seminario a Napoli Prof. Leonenko
by Enrica Pirozzi 07 Feb '23

07 Feb '23

AVVISO di SEMINARIO Prof. Nikolai Leonenko School of Mathematics, Cardiff University, UK TITOLO Multiscaling, Intermittency and large deviation in limit theorems for superpositions of Ornstein-Uhlenbeck type processes Abstract Superpositions of Ornstein-Uhlenbeck type (supOU) processes provide a rich class of stationary stochastic processes for which the marginal distribution and the dependence structure may be modeled independently [1,2]. We investigate the limiting behavior of integrated supOU processes with finite variance[3,4,6] (see also [7] for multifaced behaviour of supOU processes in the case the infinite variance). We show that after suitable normalization four different limiting processes may arise. The type of limit depends on the decay of the correlation function as well as on the characteristic triplet of the marginal distribution. supOU processes, moreover, may exhibit intermittency, a phenomenon affecting the rate of growth of moments[3,4,5,6,8]. The intermittency phenomenon appears also in some other models, for example, in the subclass of ambit processes[2] known as trawl processes [5]. Joint work with D. Grahovac (Osijek University, Croatia) and M. Taqqu (Boston University, USA) References 1. Barndorff-Nielsen, O.E. and Leonenko, N.N., (2005), Spectral properties of superpositions of Ornstein-Uhlenbeck type processes, Methodology and Computing in Applied Probability, 7, 335-352 2. Barndorff-Nielsen, O.E., Benth, F. E., Veraart, A. E.D.(2018) Ambit Stochastics, Springer. 3. Grahovac,D., Leonenko, N.,Sikorskii, A., Te?njak , I.(2016) Intermittency of superpositions of Ornstein-Uhlenbeck type processes, Journal of Statistical Physics, 165, 390-408 4. Grahovac, D., Leonenko, N., Sikorskii, A. and Taqqu.M.S. (2019) The unusual properties of aggregated superpositions of Ornstein-Uhlenbeck type processes, Bernoulli 25 (2019), no. 3, 2029?2050 5. Grahovac, D. and Leonenko, N and Taqqu, M.S.(2017) Intermittency of trawl processes, Statistic and Probability Letters, 137, 235 ? 242. 6. Grahovac, D. and Leonenko, N. and Taqqu, M.S.(2019) Limit theorems, scaling of moments and intermittency for integrated finite variance supOU processes, Stochastic Processes and Applications,129,N12,5113-5150 7. Grahovac, D. and Leonenko, N. and Taqqu, M.S.(2020) The multifaced behaviour of supOU processes: the infinite variance case, Journal of Theoretical Probability, 33, N4, 1801-1831 8. Grahovac, D. and Leonenko, N. and Taqqu, M.S. (2021) Intermittency and infinite variance: the case of integrated supOU processes, Electronic Journal of Probability, 26, art.n 56, 1-31 9. Grahovac, D. and Leonenko, N. and Taqqu, M.S. (2022) Intermittency and multiscaling in limit theorems, Fractals, 30, N 7, 2250137 *** Il seminario si terrà il giorno 10 Febbraio 2023 ore 11:00 nella Aula C del Dipartimento Matematica e Applicazioni, Università di Napoli FEDERICO II, Complesso di Monte Sant'Angelo, Via Cintia, Napoli. Link to Teams: https://teams.microsoft.com/l/meetup-join/19%3aMQ4RZDBo_0G-K_PHxKtktVYAczOG… -- 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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Next OWPS on February 15th: Frank den Hollander and Elena Pulvirenti
by Alberto Chiarini 07 Feb '23

07 Feb '23

The One World Probability Seminar is back! This Semester it will take place every other Wednesday form 15:00 to 17:00 UTC. You can find more information on the web site: https://www.owprobability.org/one-world-probability-seminar. OWPS's next session will be on Wednesday the 15th of February from 15:00 to 17:00 UTC. Our next speakers are: Frank den Hollander (Leiden) and Elena Pulvirenti (Delft) Title, abstract and the zoom link are below the signature and can be found on the website https://www.owprobability.org/one-world-probability-seminar. Best wishes, Alberto Chiarini (Padua) and Adrián González Casanova (Berkeley and México) ----------------------------------------------------------------------------------------------------------- Speakers: Frank den Hollander (Leiden) and Elena Pulvirenti (Delft) Talk 1 : Metastability for the Widom-Rowlinson model: I. Planar discs. Abstract We define the static Widom-Rowlinson model on a two-dimensional finite torus. The energy of a particle configuration is determined by its halo, defined as the union of unit discs centred at the positions of the particles. We discuss the metastable behaviour of a dynamic version of the model, in which particles are randomly created and annihilated as if the outside of the torus were an infinite reservoir with a given chemical potential. We start with the empty torus and are interested in the first time when the torus is fully covered by unit discs. This can be viewed as the crossover time from a ‘gas phase’ to a ‘liquid phase’. We consider the metastable regime where the temperature is low and the chemical potential is supercritical. In order to achieve the transition from empty to full, the system needs to create a sufficiently large droplet, called critical droplet, which triggers the crossover. It turns out that the critical droplet is close to a disc of a certain deterministic radius, with a boundary that is random and consists of a large number of unit discs that stick out by a small distance. We show how an analysis of the surface fluctuations allows us to derive both a volume term and a surface term in the asymptotics of the average crossover time. Based on joint work with Sabine Jansen (Munich) and Roman Kotecký (Prague). Talk 2 : Metastability for the Widom-Rowlinson model: II. Grains of general shape. Abstract We investigate what happens when the planar discs are replaced by convex grains in arbitrary dimensions whose shape may be random. We identify the size and the shape of the critical droplet as a function of the shape distribution for the grains. We also identify the volume term in the asymptotics of the average crossover time. In addition, we speculate about the surface term, formulating a conjecture about what it should look like. There are various interesting subcases, showing that the shape of the grains has a rather delicate influence on the critical droplet and the average crossover time. Based on joint work with Yogesh Dhandapani (Bangalore) and Roman Kotecký (Prague). Zoom-link: https://unipd.zoom.us/j/89537602090?pwd=T0lETjRKaHk1R3FpWmNTbThxNTJQdz09 Meeting ID: 895 3760 2090 Passcode: 300934 If you are having trouble with zoom, or if the capacity of the zoom room gets exceeded, you can also access to the Youtube live stream at the channel of the seminar: https://www.youtube.com/channel/UCiLiEQGTp6bZEhuHDM-WNWQ

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Call for expressions of interest in a position of Researcher (tenured) or Associate/Full Professor of Statistics, Economic Statistics, Social Statistics, Demography
by Alessandra Fabbri Colabich 06 Feb '23

06 Feb '23

The Department of Statistical Sciences of the University of Padova, www.stat.unipd.it, invites applications for one academic openings at the Researcher (Ricercatore Tenure Track), Associate Professor or Full Professor level. The applications might cover all the fields of interest for the Department, that is, the fields of Statistics (Statistica), Economic Statistics (Statistica Economica), Demography (Demografia) and Social Statistics (Statistica Sociale); a brief description of the research fields is available at https://www.stat.unipd.it/en/research/areas. Link: https://www.stat.unipd.it/en/call-expressions-interest-position-researcher-… -- Dott.ssa Alessandra Fabbri Colabich Università degli Studi di Padova Dipartimento di Scienze Statistiche [image: Ottocento anni di libertà e futuro]

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Avvio di Workshop@DSS (Scienze Statistiche, Sapienza) | 16 Febbraio 2023
by Pierpaolo Brutti 06 Feb '23

06 Feb '23

Cari tutti, sono lieto di segnalare la 1ª edizione del workshop dipartimentale dal titolo “Metodi per la Conoscenza | Il Dipartimento di Scienze Statistiche si presenta”, che si terrà Giovedì 16 Febbraio 2023 a partire dalle ore 9:30am, presso l’Aula Gini del Dipartimento di Scienze Statistiche dell’Università di Roma “La Sapienza”. Il tono della giornata sarà prettamente divulgativo e potrà essere seguita anche in diretta streaming su Zoom all’indirizzo: https://uniroma1.zoom.us/j/96613351917 La partecipazione “live” è gratuita ma, per motivi organizzativi, è richiesta l’iscrizione compilando il seguente form: https://cutt.ly/WSDSSREG Infine, al termine di questa email troverete il programma dettagliato della giornata ma, per maggiori informazioni, vi invito a consultare la pagina dedicata: https://www.dss.uniroma1.it/it/wsdss1 —Pierpaolo Brutti + Il comitato organizzatore ================================================================== Dear all, I’m glad to announce the 1st edition of the departmental workshop entitled “Metodi per la Conoscenza | Il Dipartimento di Scienze Statistiche si presenta”, that will take place on Thursday February 16 from 9:30am at Aula Gini Department of Statistics, University of Rome “La Sapienza”. The workshop will mostly be non-technical and live streamed also on Zoom at the following address: https://uniroma1.zoom.us/j/96613351917 Attendance (in person!) is free, but registration is required by filling in the following form: https://cutt.ly/WSDSSREG Finally, at the end of this email you will find the detailed program of the day but, for more information, please consult the dedicated page: https://www.dss.uniroma1.it/it/wsdss1 Please spread the news! …look forward to see you in Rome! Best —Pierpaolo Brutti + The organizers ================================================================== Giovedì 16 Febbraio 2023 Aula Gini, Dip. di Scienze Statistiche, Sapienza Università di Roma (piano terra, edificio CU002) Workshop Dipartimentale - 1ª edizione Metodi per la Conoscenza | Il Dipartimento di Scienze Statistiche si presenta .: S C H E D U L E :. • 09:30 | Marco Schaerf (Preside I3S), Saluti Istituzionali • 10:00 | Giovanna Jona Lasinio (Direttrice del DSS), Apertura Lavori • 10:20 | Fulvio De Santis e Valeria Sambucini, Contributi ai metodi bayesiani per disegno e analisi di prove cliniche • 10:40 | Susanna Levantesi, Strumenti avanzati per la valutazione del rischio in ambito attuariale • 11:00 | Maurizio Vichi, Clustering e riduzione dimensionale per dati complessi e loro applicazioni • 11:20 | Fiorenza Deriu, La Network Analysis nello studio delle reti di servizi • 11:40 | coffee break • 12:00 | Paolo Dell'Olmo e Lavinia Amorosi, Avanzamenti delle tecniche di risoluzione dei problemi di ottimizzazione e applicazioni • 12:20 | Giulia Rotundo e Giacomo Morelli, Metodi quantitativi per la misurazione e la gestione dei rischi in ambito finanziario • 12:40 | Carlo D’Ippoliti, Gestire la complessità in economia • 13:00 | break (pranzo, Aula 2) • 14:30 | Luca Tardella e Cristina Mollica, Ranking data uncertainty and its use with sports data • 14:50 | Filomena Maggino, Statistica e la sfida della complessità sociale • 15:10 | Luisa Beghin, Modelli aleatori della realtà • 15:30 | coffee break • 15:50 | Elisabetta Barbi, La rivoluzione demografica • 16:10 | Bernardo Maggi, Eurosystem stability: a stochastic dynamic optimization approach to public debt • 16:30 | Paolo Franciosa, Algoritmi e metodi efficienti per l'analisi e la gestione dei dati • 16:50 | Giovanna Jona Lasinio, Dal mare alle montagne: la statistica e la natura • 17:10 | Discussione aperta Iscrizione: https://cutt.ly/WSDSSREG Webpage: https://www.dss.uniroma1.it/it/wsdss1 Zoom: https://uniroma1.zoom.us/j/96613351917 Per Informazioni: pierpaolo.brutti(a)uniroma1.it

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Annuncio Seminario Sapienza - 9 Febbraio ore 16:00
by Lorenzo Taggi 05 Feb '23

05 Feb '23

Dipartimento di Matematica, Sapienza Università di Roma, Sala di Consiglio Giovedì 9 Febbraio 2023, ore 16:00 *Speaker:* Daniel Ueltschi, University of Warwick *Title*: Quantum spin chains, loop representations, dimerisation *Abstract:* In contrast to their classical counterparts, one-dimensional quantum spin systems are interesting, they have intriguing behaviour, and they are difficult to study. I will describe a family of systems with nearest-neighbour interactions and O(n) symmetry. Its ground state phase diagram is expected to have a rich structure. For large spins it is possible to prove the occurrence of dimerisation in an open domain. The proof involves a loop representation and the method of cluster expansions. This is joint work with Jakob Bjornberg, Peter Muhlbacher, and Bruno Nachtergaele.

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Summer School: Probability and geometry on configuration spaces, Berlin July 17–21, 2023
by Dello Schiavo Lorenzo 03 Feb '23

03 Feb '23

Dear Colleagues, we would be grateful if you could advertise the following summer school to the junior members of your research groups: Summer School on Probability and geometry on configuration spaces <https://www.wias-berlin.de/workshops/SPP2265_SummerSchool23/>, to be held at the Harnack-Haus <https://www.harnackhaus-berlin.mpg.de/en> in Berlin from July 17 to 21, 2023. The school will focus on configuration spaces, seen through the different lenses of analysis, geometry, and probability. Aim of the school is to bring together different communities in the theory of point processes, configuration-space analysis, and particle systems. It will consist of four mini courses by - Ronan Herry (Centre Henri Lebesgue, Rennes) - Benedikt Jahnel (TU Braunschweig, WIAS Berlin) - Alessia Nota (University of L'Aquila, to be confirmed) - Elena Pulvirenti (TU Delft). A number of talks given by young scientists will provide further insight into cutting-edge research related to the main topic. Registration is free but mandatory, and funding is available for the accommodation of young participants. Registration deadline: April 15, 2023. For further information and to register please visit the conference website https://www.wias-berlin.de/workshops/SPP2265_SummerSchool23/ <https://www.wias-berlin.de/workshops/SPP2265_SummerSchool23/> Best regards, The organisers Lorenzo Dello Schiavo (ISTA) and Alexander Zass (WIAS Berlin) *********************************** Dr. Lorenzo Dello Schiavo Institute of Science & Technology Austria Am Campus 1, 3400 Klosterneuburg Austria, AT lorenzo.delloschiavo(a)ist.ac.at <mailto:lorenzo.delloschiavo@ist.ac.at> lorenzodelloschiavo.com <http://lorenzodelloschiavo.com/>

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Avviso di seminario
by Barbara Martinucci 02 Feb '23

02 Feb '23

UNIVERSITA' DI SALERNO Dipartimento di Matematica AVVISO DI SEMINARIO Giovedì 9 febbraio 2023, alle ore 12:00, nella la Sala del Consiglio del Dipartimento di Matematica, edificio F2, livello 1, si terrà il seguente seminario in presenza e online (su Teams): *The Fractional Non-homogeneous Poisson Process* *Prof. N. Leonenko* Cardiff University, United Kingdom Gli interessati sono cordialmente invitati a partecipare, Antonio Di Crescenzo Barbara Martinucci Alessandra Meoli Serena Spina Link su Teams: https://teams.microsoft.com/l/meetup- join/19%3a6hfHOOIVt89PyLIJDpqXis553z6pgGL9RMiVIQJWO201%40thread.tacv2/167517384 5565?context=%7b%22Tid%22%3a%22c30767db-3dda-4dd4-8a4d- 097d22cb99d3%22%2c%22Oid%22%3a%2261e4e421-60a6-4cb9-8153-d04cb91c1edf%22%7d

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Seminar: Giovanni Conforti at Tor Vergata
by mic sal 02 Feb '23

02 Feb '23

Dear all, On Wednesday, February 1st, at 14h00 in Aula Dal Passo at Roma Tor Vergata, RoMaDS (https://www.mat.uniroma2.it/~rds/about.php) will host Giovanni Conforti (École Polytechnique) with the seminar "A probabilistic approach to exponential convergence of Sinkhorn's algorithm" Abstract: The entropic optimal transport problem (EOT) is obtained adding an entropic regularisation term in the cost function of the Monge-Kantorovich problem and is nowadays regularly employed in machine learning applications as a more tractable and numerically more stable version of the optimal transport problem. On the other hand, E.Schrödinger asked back in 1931 the question of finding the most likely evolution of a cloud of independent Brownian particles conditionally to observations. The mathematical formulation of his question through large deviations theory is known as the Schrödinger problem and turns out to be fully equivalent to EOT. In this talk, I shall illustrate both viewpoints and then move on to sketch the ideas of a probabilistic method to show exponential convergence of Sinkhorn's algorithm, whose application the heart of the recent successful applications of EOT in statistical machine learning and beyond. In particular, we shall discuss how the proposed method opens new perspective for showing exponential convergence for marginal distribution that are non compactly supported. We encourage in-person partecipation. Should you be unable to come, here is the link to the event on Teams: https://teams.microsoft.com/l/meetup-join/19%3arfsL73KX-fw86y1YnXq2nk5VnZFw… The seminar is part of the Excellence Project Math@TOV. You can find a schedule with the next events at the following link: https://www.mat.uniroma2.it/~rds/events.php .

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call for papers - two special issues
by Roy Cerqueti 02 Feb '23

02 Feb '23

Dear all, this message is to inform you about two calls for papers of special issues at two different journals. My warmest regards, Roy Cerqueti Some details: 1) Journal: Axioms - Title: Statistical Methods for Finance and Econophysics - Guest editors: Roy Cerqueti, Raffaele Mattera. See here: https://www.mdpi.com/journal/axioms/special_issues/2S5S0H34PA 2) Journal: Frontiers in Applied Mathematics and Statistics - Title: Theories and Applications in Network Science Volume II - Guest editors: Roy Cerqueti, Feng Bill Shi, Hsuan-wei Wayne Lee. See here: https://www.frontiersin.org/research-topics/43626/theories-and-applications…

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Monash BNP Networking Workshop 4-8 December 2023 in Melbourne, Australia
by Raffaele ARGIENTO 01 Feb '23

01 Feb '23

Dear friends and colleagues, we are pleased to announce the 2nd Bayesian Nonparametrics Networking workshop on 4-8 December 2023 to be held at Monash University ( www.monash.edu <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fddec1-0-e…>) in Melbourne, Australia. The workshop program includes 3 mini-courses delivered by Jim Griffin, Athanasios Kottas and Stephanie van der Pas, who will also deliver Keynote talks. The workshop will also feature invited talks, contributed talks and a poster session each featuring a range of different topics presented by a blend of both junior and established researchers. Those who wish to be considered for a contributed talk or poster presentation should submit their abstract by 15 April 2023. This is the same due date for travel grant applications for junior researchers. For more information, please visit the workshop event page at https://www.monash.edu/business/events/bnp2023 <https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fddec1-0-e…>, or contact the local organising committee via *bnpnet(a)monash.edu <bnpnet(a)monash.edu>*. Best regards, Raffaele Argiento -- Raffaele Argiento Professor of Statistics Department of Economics University of Bergamo (Italy) web: http://www.raffaeleargiento.it/

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SPASS Seminar: Elia Bisi and Michele Coghi
by Gianmarco Bet 01 Feb '23

01 Feb '23

Dear Colleagues, We would like to invite you to the following (double) SPASS seminar, jointly organized by UniPi, SNS, UniFi and UniSi (abstracts below): Matrix Whittaker processes Elia Bisi (TU Wien) and Rough McKean-Vlasov dynamics for robust ensemble Kalman filtering Michele Coghi (Università di Trento) The seminars will take place on TUE, 7.2.2023 respectively at 14:00 CET and 15:00 CET in Sala Seminari, Dipartimento di Matematica, Pisa and streamed online at the link below. The organizers, A. Agazzi, G. Bet, A. Caraceni, F. Grotto, G. Zanco https://sites.google.com/unipi.it/spass <https://www.google.com/url?q=https://sites.google.com/unipi.it/spass&source…> -------------------------------------------- Matrix Whittaker processes Abstract: Our journey starts from interacting random walks with push-and-block dynamics. We then consider their positive temperature analogues, touching upon polymer partition functions. Finally, we arrive at matrix Whittaker processes, which are integrable models of interacting Markov dynamics on matrix spaces. Our main tools are intertwining relations and the theory of Markov functions, which we will review. This talk is based on a joint work with Jonas Arista and Neil O’Connell: https://arxiv.org/abs/2203.14868. Rough McKean-Vlasov dynamics for robust ensemble Kalman filtering Abstract: Motivated by the challenge of incorporating data into misspecified and multiscale dynamical models, we study a McKean-Vlasov equation that contains the data stream as a common driving rough path. This setting allows us to prove well-posedness as well as continuity with respect to the driver in an appropriate rough-path topology. The latter property is key in our subsequent development of a robust data assimilation methodology: We establish propagation of chaos for the associated interacting particle system, which in turn is suggestive of a numerical scheme that can be viewed as an extension of the ensemble Kalman filter to a rough-path framework. Finally, we discuss a data-driven method based on subsampling to construct suitable rough path lifts and demonstrate the robustness of our scheme in a number of numerical experiments related to parameter estimation problems in multiscale contexts. ---------------------------------------------------------------------- Gianmarco Bet (he/him) Senior researcher https://gianmarco.bet Phone: (+39) 055 2751491 Department of Mathematics and Informatics "U. Dini" University of Florence Viale Morgagni, 65 50134 Firenze, Italy Office 64 ---------------------------------------------------------------------- ---------------------------------------------------------------------- Gianmarco Bet (he/him) Senior researcher https://gianmarco.bet Phone: (+39) 055 2751491 Department of Mathematics and Informatics "U. Dini" University of Florence Viale Morgagni, 65 50134 Firenze, Italy Office 64 ----------------------------------------------------------------------

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Fwd: Scaling limits and generalized hydrodynamics, March 27-31 2023, GSSI
by Faggionato, Alessandra 01 Feb '23

01 Feb '23

Buongiorno, vi giro l'annuncio di una scuola molto interessante che si terra' a L'Aquila (a cui si puo' partecipare sia on-site che online). Non mi e' possibile inoltrare il poster alla mailing list ma chi fosse interessato al poste lo trova a https://indico.gssi.it/event/425/attachments/756/1238/poster.pdf Saluti Alessandra Faggionato ---------- Forwarded message --------- From: Giulia Basti <giulia.basti(a)gssi.it> Date: Mon, 30 Jan 2023 at 11:33 Subject: Scaling limits and generalized hydrodynamics, March 27-31 2023, GSSI Dear colleagues and friends, this is a gentle reminder for the school *"Scaling limits and generalized hydrodynamics"* which will be held at the Gran Sasso Science Institute, in L'Aquila (Italy), from *March* *27**th (9 am) to** March* *31st** (12 pm)**, 202**3.* The school will consist of three introductory mini courses, given by - *Fraydoun Rezakhanlou*, University of California - *Chiara Saffirio*, University of Basel - *Herbert Spohn*, Technical University of Munich and invited talks by - *Thierry Bodineau*, CMAP École Polytechnique - *Eric Carlen*, Rutgers University - *Pablo Ferrari*, Universidad de Buenos Aires - *Alessia Nota*, University of L'Aquila - *Sergio Simonella*, Sapienza Università di Roma see the attached poster. The school will be complemented by contributed talk sessions by selected young participants (deadline for submission: February 5th 2023) Registration is free but mandatory (deadlines: March 12th 2023 for onsite participation, March 26th 2023 for online participation). Some financial support to a limited number of young participants will be available (deadline for requests: February 5th , 2023). The registration form and further information are available on the website: https://indico.gssi.it/e/ScalingLimits We would be grateful if you could circulate the announcement among potentially interested young researchers, and hang the poster at your Institution. We are looking forward to meeting you at GSSI! Giulia Basti, Serena Cenatiempo, Stefano Olla, Errico Presutti, Marielle Simon, Lu Xu -- ************************************************* Prof. Alessandra Faggionato https://www1.mat.uniroma1.it/people/faggionato/ Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 5, Phone (0039) 06 49913252 *************************************************

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Fwd: & PhD/ Postdoc advertisement
by Faggionato, Alessandra 01 Feb '23

01 Feb '23

Buongiorno ricevo e con piacere inoltro. Buona giornata Alessandra Faggionato ---------- Forwarded message --------- From: <jansen(a)math.lmu.de> Date: Fri, 27 Jan 2023 at 13:40 Subject: Re: & PhD/ Postdoc advertisement To: Faggionato, Alessandra <faggiona(a)mat.uniroma1.it> ================================== PhD-student or Postdoc vacancy on Continuum Statistical Mechanics in Augsburg / München ---------------------------------- Dear colleagues, We are looking for a talented researcher to work on a project on *Continuum Particle Systems* at Augsburg University and LMU Munich. The project focusses on the decay of correlations of continuum particle systems and combines techniques from stochastic geometry and statistical mechanics. This is a temporary position that can be filled by a PhD student or postdoc (Salary scale TV-L E13, full- or part-time, fixed term) to be started on 01 May 2023 or later. We are looking for candidates with excellent background in probability theory and statistical mechanics who obtained an MSc degree in Mathematics. The project is part of the newly established SFB/CRC “Mathematics of Many-Body Quantum Systems and Their Collective Phenomena“ (Munich/Tuebingen). Please contact Prof. Sabine Jansen (jansen(a)math.lmu.de) or Prof. Markus Heydenreich (m.heydenreich(a)lmu.de) for further information about the project. Interested candidates are invited to send letter of motivation, curriculum vitae as well as name and contact details of two academic references to m.heydenreich(a)lmu.de. Review of application begins on 01 February 2023 and shall continue until the position is filled. Best wishes, Sabine Jansen and Markus Heydenreich -- ************************************************* Prof. Alessandra Faggionato https://www1.mat.uniroma1.it/people/faggionato/ Department of Mathematics University "La Sapienza" Piazzale Aldo Moro, 5 00185 - Rome Office 5, Phone (0039) 06 49913252 *************************************************

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Webinar PRISMA 6 febbraio 23 : Di Crescenzo-Cappelletti
by Claudia Ceci 01 Feb '23

01 Feb '23

Buongiorno a tutte/i, ho il piacere di annunciare il prossimo webinar del ciclo di seminari online promosso dal Gruppo UMI PRISMA ( http://www.umi-prisma.polito.it/index.html) *Lunedi’ 6 febbraio 2023* *ore 16-17 Antonio Di Crescenzo* *Titolo: *You can model so many things with birth-death processes *Abstract:* Birth-death processes constitute the continuous-time analog of random walks, and are largely adopted as a tool for stochastic modeling. Indeed, the richness of the birth and death rates allows modeling a variety of phenomena, ranging from evolutionary dynamics and neuronal modeling, to queueing and reliability theory, for instance. Various methods of analysis have been developed for determining quantities of interest, such as stationary distributions and first-passage-time distributions. The talk is aimed at providing a review of some recent results on growth-evolution models characterized by time-dependent growth rates and their stochastic counterpart described by birth-death processes. The analysis focuses on generalizations of the Gompertz and logistic growth models, and on the related birth-death processes having linear and quadratic rates. A diffusion approximation leading to a time-inhomogeneous geometric Brownian motion is also treated. We also present certain generalizations involving extended birth-death processes on a star-graph defined as a lattice formed by the integers of semiaxes joined at the origin. Specifically, we deal with (i) the analysis of the transient and asymptotic behavior of a multispecies birth-death-immigration process and of a continuous-time multi-type Ehrenfest model, (ii) the construction and the study of suitable diffusion approximations for the considered models, leading to two processes belonging to the class of Pearson diffusions on the spider. *ore 17-18* *Daniele Cappelletti* *Titolo: * Solving the chemical recurrence conjecture in two dimensions *Abstract:* Stochastic reaction networks are continuous-time Markov chains typically used in biology, epidemiology, and population dynamics. The goal is to keep track of the abundance of the different reactants over time. What makes them special from a mathematical point of view is the fact that their qualitative dynamics is described by a finite set of allowed transformation rules, referred to as "reaction graph". A long-standing conjecture is that models with a reaction graph composed by a union of strongly connected components are necessarily positive recurrent, meaning that each single state is positive recurrent. In my talk I will discuss why the conjecture makes intuitive sense and why it is difficult to prove it. I will then show how my collaborators and I adapted Forster-Lyapunov techniques to prove the conjecture in two dimensions. Joint work with: Andrea Agazzi, David Anderson, Jonathan Mattingly Qui di seguito il link per la partecipazione https://teams.microsoft.com/l/meetup-join/19%3ad685b25ed15f4821ac5168e63cf9… Cari saluti, Claudia Ceci *********************************************************************** Claudia Ceci Dipartimento di Metodi e Modelli per l’Economia, il Territorio e la Finanza (MEMOTEF) Università di Roma La Sapienza Via Del Castro Laurenziano 9 Roma 00161 Italy Email: claudia.ceci(a)uniroma1.it

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Distinct and well-recognizable notations for writings in Probability and Statistics
by Antonio DI CRESCENZO 30 Jan '23

30 Jan '23

Upon invitation of Wolfgang Runggaldier, Professor Emeritus at the University of Padua, I am pleased to send you the attached file, which contains interesting remarks by Jordan Stoyanov, aimed at improving and unifying the use of notations and abbreviations in scientific writing in Probability and Statistics cf. https://drive.google.com/file/d/1-7lsVkmbZR1LvVmZTnIf3UAYO3K9me8e/view?usp=… -- ============================================= Antonio Di Crescenzo Dipartimento di Matematica Università degli Studi di Salerno Via Giovanni Paolo II, n. 132 <https://maps.google.com/?q=Via+Giovanni+Paolo+II,+n.+132+%0D%0A84084+Fiscia…> 84084 Fisciano (SA) Italy Tel. +39-089-963349 E-mail(1): adicrescenzo(a)unisa.it E-mail(2): adicresc(a)gmail.com Web: http://www.unisa.it/docenti/antoniodicrescenzo/index Skype: antoniodicrescenzo =============================================

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I: [pde-seminar] PDE seminar with Filippo de Feo
by Giuseppina Guatteri 30 Jan '23

30 Jan '23

Ricevo e inoltro. Il seminario si terrà ad Atlanta il 31 gennaio alle ore (per noi) 21:00. Cordiali saluti Giuseppina. Giuseppina Guatteri Dipartimento di Matematica Politecnico di Milano Via Bonardi, 9 20133 Milano tel.: +390223994556 fax.:+390223994513 email: giuseppina.guatteri(a)polimi.it "Happiness can be found even in the darkest of times, if one only remembers to turn on the light" A. Dumbledore ________________________________ ________________________________ From: pde-seminar-request(a)lists.gatech.edu <pde-seminar-request(a)lists.gatech.edu> on behalf of Chen, Gong <gc(a)math.gatech.edu> Sent: Sunday, January 29, 2023 6:33 AM To: pde-seminar(a)lists.gatech.edu <pde-seminar(a)lists.gatech.edu> Subject: [pde-seminar] PDE seminar with Filippo de Feo Dear all, On Tuesday, Jan 31, we will have our visitor Filippo de Feo from Politecnico di Milano to speak for our PDE seminar in person in Skiles 006. Filippo’s talk information can be found here https://math.gatech.edu/seminars-colloquia/series/pde-seminar/filippo-de-fe… The talk will also be streamed on zoom: https://gatech.zoom.us/j/95574359880?pwd=cGpCa3J1MFRkY0RUeU1xVFJRV0x3dz09 Meeting ID: 955 7435 9880<tel:7435%209880> Passcode: PDE Best wishes, Gong

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SPASS Seminar: Dejun Luo
by Francesco Grotto 30 Jan '23

30 Jan '23

Dear Colleagues, We would like to invite you to the following SPASS seminar, jointly organized by UniPi, SNS, UniFi and UniSi: *Convergence rates and CLT for stochastic inviscid Leray-model with transport noise* *Dejun Luo* (Chinese Academy of Science) The seminar will take place on TUE, 31.1.2023 at 14:00 CET in Sala Seminari, Dipartimento di Matematica, Pisa and streamed online at the link below. The organizers, A. Agazzi, G. Bet, A. Caraceni, F. Grotto, G. Zanco https://sites.google.com/unipi.it/spass -------------------------------------------- *Abstract: * *The stochastic inviscid Leray- model perturbed by multiplicative transport noise is considered on the torus. Under a suitable scaling of the noise, it is shown that the weak solutions converge, in some negative Sobolev spaces, to the unique solution of the deterministic viscous Leray- model. Interpreting such limit result as a law of large numbers, we also study the underlying central limit theorem and provide an explicit convergence rate. This talk is based on a joint work with PhD Bin Tang.*

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PhD course "Concentration of probability measures" by Nicola Turchi at Milano-Bicocca
by Maurizia Rossi 26 Jan '23

26 Jan '23

Dear colleagues, I would like to inform you that *Dr. Nicola Turchi* (University of Milano-Bicocca) will deliver a PhD course entitled *"Concentration of probability measures"* from *January 30th* to April 3rd 2023* in presence* at the Department of Mathematics and its Applications, University of Milano-Bicocca, and *live streaming*. *For more information* https://drive.google.com/file/d/1pRkD4HP2vMGE_AssgQ4LR75TqzCj0wvb/view Please do not hesitate to write an email to *nicola.turchi(a)unimib.it <nicola.turchi(a)unimib.it>* should you need further information. Best regards, Maurizia Rossi -- Maurizia Rossi Dipartimento di Matematica e Applicazioni Università degli Studi di Milano-Bicocca https://mauriziarossi.wordpress.com

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