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PMS^2 hybrid talk: Luca Scarpa, Monday November 15 at 14.30.
by Carlo Orrieri 10 Nov '21

10 Nov '21

Dear colleagues, we are happy to announce the hybrid - that is, in person with online streaming - talk of the (PMS)^2 series: Speaker: Luca Scarpa (Politecnico di Milano) Title: Variational methods for doubly nonlinear stochastic evolution equations. Abstract: We give an overview of some recent results for doubly nonlinear stochastic evolution equations in Hilbert spaces. In the first part of the talk we introduce the prototypes of the problems in consideration and we discuss the main existence results.Secondly, we provide alternative proofs of existence which rely on convex minimisation techniques, such as the Weighted-Energy-Dissipation (WED) and the Energy-Dissipation principles (EDP). Eventually, we discuss some current open problems, focusing above all on the direction of uniqueness-by-noise for doubly nonlinear evolutions. The works presented in the talk are based on joint collaborations with Prof. Ulisse Stefanelli (University of Vienna, Austria). Date and time: Monday November 15, 14:30-15:30 (Rome time zone). Place: Aula Seminari - III piano (third floor), Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci, 32 – 20133 Milano - Ed. 14 “Nave” Campus Bonardi. (Accesso pedonale da: Via A.M. Ampère, 2 - Milano, Via E. Bonardi, 9 - Milano, Via G. Ponzio, 31 - Milano). Zoom link: https://us02web.zoom.us/j/2940008616 <https://us02web.zoom.us/j/2940008616> This is a talk of the (PMS)^2: Pavia-Milano Seminar series on Probability and Mathematical Statistics organized jointly by the universities Milano-Bicocca, Pavia, Milano-Politecnico and Milano-Statale. For more information see the dedicated webpage: https://paviamilanoseminars.wordpress.com/ <https://paviamilanoseminars.wordpress.com/> Participation is free and welcome! The number of seats available in the seminar room, due to Covid-19 restrictions, is limited to 15. We advise people who want to participate in person that they must fill out the following form https://www.mate.polimi.it/registrazione/PMS2_registrazione.php <https://www.mate.polimi.it/registrazione/PMS2_registrazione.php> by November 14. Participants in person need to have the "green pass" or the EU digital covid certificate. Access to the seminar room will be allowed only after verification of the validity of the personal Green Pass. Best regards The organizers (Mario Maurelli, Carlo Orrieri, Maurizia Rossi, Margherita Zanella)

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Webinar Insubria and Bicocca - November Tuesday 16 at 17:00 - Zachary Feinstein - Set-Valued Risk Measures as BS$\Delta$Es
by Mastrogiacomo Elisa 08 Nov '21

08 Nov '21

Dear all, On November Tuesday 16 at 17:00, Zachary Feinstein (Stevens Institute of Technology) will give a virtual seminar “in Insubria & Bicocca”, to which you are all invited. Title and abstract below. Title: Set-Valued Risk Measures as BS$\Delta$Es Abstract: Scalar dynamic risk measures for univariate positions in continuous time are commonly represented as backward stochastic differential equations. In the multivariate setting, dynamic risk measures have been defined and studied as families of set-valued functionals in the recent literature. There are two possible extensions of scalar backward stochastic differential equations for the set-valued framework: (1) backward stochastic differential inclusions, which evaluate the risk dynamics on the selectors of acceptable capital allocations; or (2) set-valued backward stochastic differential equations, which evaluate the risk dynamics on the full set of acceptable capital allocations as a singular object. In this talk, we will investigate the discrete time setting with difference inclusions and difference equations in order to provide insights for such differential representations for set-valued dynamic risk measures in continuous time.. The seminar will be on Zoom. You can find the information to join below. Topic: Zachary Feinstein - Set-Valued Risk Measures as BS$\Delta$Es Time: Nov 16, 2021 17:00 PM Rome Where: Zoom Link: https://zoom.us/j/92990672101?pwd=TTY3SGtpVHlOdE9adEhKcGV1MzJnUT09 ID riunione: 929 9067 2101 Passcode: 85asGb After the talk, you are all invited to remain in the meeting for an informal aperitif and chat. Please forward to anyone interested. Kind regards, Emanuela Rosazza Gianin and Elisa Mastrogiacomo Elisa Mastrogiacomo ----------------------------------------- Professore Associato di Metodi matematici dell'economia e delle scienze attuariali e finanziarie Università degli Studi dell'Insubria Dipartimento di Economia Via Monte Generoso, 71 – 21100 Varese tel. +39 0332/395528 web: https://www.uninsubria.it/hpp/elisa.mastrogiacomo mail: elisa.mastrogiacomo(a)uninsubria.it<mailto:mario.rossi@uninsubria.it>

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Seminar by L. Campi in Verona (Virtual + In Person)
by Alessandro Gnoatto 05 Nov '21

05 Nov '21

Prof. Luciano Campi (University of Milan) will give a talk at the Department of Economics. Date: 9 November 12:00 CET. Title: "Mean field games with absorption and common noise with a model of bank run" If you would like to attend via Zoom, please register at the following link, we will send you the details: https://docs.google.com/forms/d/e/1FAIpQLScYCdJt0zbw3PiKRhISABA-iwjZYYT-2qB… Abstract: We consider a mean field game describing the limit of a stochastic differential game of $N$-players whose state dynamics are subject to idiosyncratic and common noise and that can be absorbed when they hit a prescribed region of the state space. We provide a general result for the existence of weak mean field equilibria which, due to the absorption and the common noise, are given by random flow of sub-probabilities. We first use a fixed point argument to find solutions to the mean field problem in a reduced setting resulting from a discretization procedure and then we prove convergence of such equilibria to the desired solution. We exploit these ideas also to construct $\varepsilon$-Nash equilibria for the $N$-player game. Since the approximation is two-fold, one given by the mean field limit and one given by the discretization, some suitable convergence results are needed. We also introduce and discuss a novel model of bank run that can be studied within this framework.This talk is based on a joint paper with Matteo Burzoni (University of Milan). -- Prof Alessandro Gnoatto, PhD Dipartimento di Scienze Economiche Università degli Studi di Verona Via Cantarane 24 37129, Verona, Italy Room 1.05 Tel: +39 045 802 8537 Homepage: www.alessandrognoatto.com E-mail: alessandro.gnoatto(a)univr.it -------------------------------------------------- View my research on my SSRN Author page: http://ssrn.com/author=1615989 --------------------------------------------------

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Fondamenti della Probabilità - L'impostazione di Bruno de Finetti
by Antonio Lijoi 04 Nov '21

04 Nov '21

Care/i tutte/i, ricordo che gli ultimi due seminari del ciclo ** Fondamenti della probabilità. L'impostazione di Bruno de Finetti ** Relatore: Prof. Eugenio Regazzini, Università di Pavia si terranno nelle seguenti date 5 novembre 2021, alle 17:30 6 novembre 2021, alle 10:30 in Aula 35, via Sarfatti 25, Milano Il ciclo seminariale si svolgerà in modalità ibrida. Per chi desidera collegarsi on-line, di seguito sono elencati i link per il collegamento alle sessioni: 5 nov 2021 05:30 PM https://unibocconi-it.zoom.us/j/94824472994?pwd=YXNpdnNzUENPV2FIeTBwKzRKZU1… ID riunione: 948 2447 2994 Passcode: 225763 6 nov 2021 10:30 AM https://unibocconi-it.zoom.us/j/99374038124?pwd=eWtMRUNOZGh4dDJWZEprSG9EL3p… ID riunione: 993 7403 8124 Passcode: 249969 Cordiali saluti, AL

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Dottorati di ricerca su temi innovazione e "green", UniGe, scadenza 11 novembre
by Antonio Pievatolo 04 Nov '21

04 Nov '21

Segnalo i bandi per borse sui fondi del Programma Operativo Nazionale 2014-2020 – Dottorati di ricerca su tematiche dell’innovazione e green – D.M. 10 agosto 2021, n. 1061, in scadenza l'11 novembre alle 12:00 presso l'Università di Genova, in particolare quelli relativi al programma in Matematica e Applicazioni. Informazioni e iscrizioni al seguente link: [ https://unige.it/usg/it/dottorati-di-ricerca | https://unige.it/usg/it/dottorati-di-ricerca ] Saluti, Antonio Pievatolo -- Dr Antonio Pievatolo CNR IMATI Phone: +39 02 23699 520 https://www.imati.cnr.it/mypage/people/PievatoloAntonio.htm

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Fwd: Avviso seminario
by Enrico Bibbona 04 Nov '21

04 Nov '21

Gentilissimi, con la presente si ricorda che martedì *09 novembre*, ore 16:30, il prof. *Grzegorz A. Rempala *presenterà un seminario dal titolo: *“Modeling a new pandemic with an old equation. 2020-21 Ohio statewide SIR models for COVID-19”* Questo evento e parte del "Progetto di eccellenza", DISMA - Politecnico di Torino. Maggiori informazioni reperibili nella locandina allegata e sul sito: www.polito.it/disma-excellence/ Il seminario si terrà in la forma telematica, tramite la piattaforma Zoom. Per collegarsi, sarà necessario utilizzare il seguente link https://polito-it.zoom.us/j/87409718573?pwd=T3ZmTFpOb210THpUcVFlZmdyb2pMdz09 ID riunione: 874 0971 8573 Passcode: 372502 Accedendo al seminario, si prega di tenere microfono e videocamera disattivati. Per porre domande al termine del seminario, si prega di utilizzare la chat per chiedere la parola. Cordiali saluti Enrico Bibbona Dear colleagues, it is our pleasure to invite you to the seminar *“Modeling a new pandemic with an old equation. 2020-21 Ohio statewide SIR models for COVID-19”*by prof. Grzegorz A. Rempala. The seminar will be held on Tuesday, November 09, at 16:30. This event is part of "Progetto di eccellenza", DISMA - Politecnico di Torino. Further information available on the attached flyer and www.polito.it/disma-excellence/ The seminar will be online on Zoom platform. To connect, please follow this link https://polito-it.zoom.us/j/87409718573?pwd=T3ZmTFpOb210THpUcVFlZmdyb2pMdz09 ID riunione: 874 0971 8573 Passcode: 372502 By connecting to the seminar, please switch both microphone and webcam off. Question time will be at the end of the talk. Please, use the chat to ask for the floor. Best regards, Enrico Bibbona Enrico Bibbona Associate Professor of Statistics Probability, Statistics and Optimization group Department of Mathematical Sciences "G. L Lagrange" Politecnico di Torino

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Luisa Andreis talk at the Torino seminar series in Stochastics and Mathematical Statistics
by Giuseppe D'Onofrio 04 Nov '21

04 Nov '21

Dear all, We are glad to announce the second seminar of the *Torino seminar series in Stochastics and Mathematical Statistics. * Torino seminar series SMS is a monthly seminar series held at the Department of Mathematics G. Peano of the University of Turin. For more info and a list of future talks see https://sites.google.com/view/torinostochastics. *Date and time:** Tuesday 9 November*, 2021, h 14:30-15:30 *Location*: Aula 5, Palazzo Campana, via Carlo Alberto 10, Torino *Speaker*: *Luisa ANDREIS *(University of Florence) *Title*: Phase transition in sparse random graphs and coagulation processes. *Abstract**:* Inhomogeneous random graphs are a natural generalization of the well-known Erdős–Rényi random graph, where vertices are characterized by a type and edges are present independently according to the type of the vertices that they are connecting. In the sparse regime, these graphs undergo a phase transition in terms of the emergence of a giant component exactly as the classical Erdős–Rényi model. In this talk we will present an alternative approach, via large deviations, to prove this phase transition. This allows a comparison with the gelation phase transition that characterizes some coagulation process and with phase transitions of condensation type emerging in several systems of interacting components. This is an ongoing joint work with Wolfgang König (WIAS and TU Berlin), Tejas Iyer (WIAS), Heide Langhammer (WIAS), Robert Patterson (WIAS). Best regards, The organizers (Tiziano De Angelis, Giuseppe D'Onofrio, Elena Issoglio)

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Politecnico di Milano - Seminario Arnone
by Laura Maria Sangalli 03 Nov '21

03 Nov '21

Si avvisa che in data 04-11-2021, 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: Relatore: Eleonora Arnone, Dipartimento di Matematica, Politecnico di Milano Titolo: Density estimation over complicated domains Sommario: In this talk, a nonparametric method for density estimation over complicated spatial domains is presented. The method combines a likelihood approach with a regularization based on a differential operator, and the estimator is proven to be consistent. The discretization of the estimator is based on finite elements, ensuring high computational efficiency and enabling great flexibility. The proposed method efficiently deals with data scattered over two-dimensional regions having complicated shapes, two-dimensional Riemannian manifolds, or planar networks. Moreover, it captures very well complicated signals having multiple modes with different directions and intensities of anisotropy. Il seminario può essere seguito online dal seguente link: https://mox.polimi.it/mox-seminars/?id_evento=2089 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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Webinar Ryder @Bocconi
by Giacomo Zanella 03 Nov '21

03 Nov '21

We announce the following DEC Statistics webinar at Bocconi: Date: Thursday 4 November 2021, h12:00 (Italy time) Speaker: Robin Ryder (Université Paris Dauphine) Title: Bayesian methods for inferring the history of languages Abstract: Languages change through time in a manner comparable to biological evolution. Models have been developed for many aspects of human languages, including vocabulary, syntax and phonology. The complexity of these models, as well as the nature of the questions of interest, make the Bayesian framework quite natural in this setting, which explains why much of the research in Statistics applied to Historical Linguistics uses Bayesian methods. I shall present an overview of various models, starting with Morris Swadesh's failed attempts at glottochronology in the 1950s, then looking at some models developed in the last two decades. I shall go into more detail for a model of so-called "core" lexical data by a stochastic process on a phylogenetic tree, with an initial focus on the Sino-Tibetan family of languages and on the issue of dating the most recent common ancestor to these languages. This will allow me to discuss issues of model robustness and validation. I shall conclude with some ongoing work about joint estimation of lexical and phonological changes through a model of random discrete matrices, currently being applied to the history of sign languages. The webinar will be on zoom at: https://unibocconi-it.zoom.us/j/97798499552?pwd=U3o1NXBVZnA2Vm12RjZHLzl4SXd… Meeting ID: 977 9849 9552 Passcode: 564168 Kind regards, Giacomo Zanella

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[PRISMA] seminari di G. Peccati e F. Grotto + altre informazioni
by Domenico Marinucci 03 Nov '21

03 Nov '21

Cari colleghi lunedì 8 novembre 2021 riprenderanno i seminari online del Gruppo UMI PRISMA, con i seguenti interventi: * November 8, 2021, 16:00-17:00 (CET): Giovanni Peccati TITLE: Quantitative stabilization results on the Poisson space [1] ABSTRACT: Consider a random variable associated with a random point configuration generated by a Poisson point process (for instance, is the length of some random geometric graph). How can we assess the discrepancy between the distribution of and the one of a Gaussian random variable? The aim of my talk is to describe some recent results in this direction, all relying on some quantitative version of the notion of "geometric stabilization", as formalized by Penrose & Yukich in 2001. In doing so, I will sketch the general philosophy of a powerful collection of techniques for establishing probabilistic approximations, known as the "Malliavin-Stein method". Some explicit examples will be discussed, in particular, related to models of combinatorial optimization and random forests. * November 8, 2021, 17:00-18:00 (CET): Francesco Grotto TITLE: Completely Random Measures and 2D Euler's Equations [1] ABSTRACT: We will recall generalities on completely random measures -alias independently scattered measures- and their natural interaction with divergence-less flows on the underlying domain. We will then proceed to argue how these random fields thus constitute invariant measures for 2d incompressible Euler's equations, outline how a notion of solution to the latter nonlinear dynamics can be given in this setting by means of stochastic integrals, and discuss both rigorous results and open problems relating to the well-posedness of this measure-preserving system. Per altre informazioni: http://www.umi-prisma.polito.it/webinars.html Collegamento Teams: [1] https://teams.microsoft.com/l/meetup-join/19%3a667d2414be564c5d8fba30acffeb… Grazie per l'attenzione, Domenico Marinucci -- @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Domenico Marinucci Dipartimento di Matematica Università di Roma Tor Vergata https://www.mat.uniroma2.it/~marinucc/ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

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