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Seminar Barbara Vantaggi in Bologna
by Sabrina Mulinacci 06 Jul '23

06 Jul '23

Dear alla we are glad to announce the seminar of Barbara Vantaggi at the Department of Statistical Sciences of the University of Bologna The seminar is today July 6th 2023 at 4 pm. A dynamic Choquet pricing rule with bid-ask spreads under ambiguity We introduce a dynamic pricing rule allowing for frictions in the form of bid-ask spreads, by modeling “risk-neutral” uncertainty through belief functions. The aim is to face pricing in a multi-period binomial market model under ambiguity. To this purpose, we introduce and characterize Dempster-Shafer multiplicative binomial processes together with the induced conditional Choquet expectation operator. Next, we consider a market formed by a frictionless risk-free bond (whose price is modeled by a deterministic process) and a non-dividend paying stock with frictions (whose lower price is modeled by a Dempster Shafer multiplicative binomial process). In this market we prove an analog of the classical theorem of change of measure relying on the notion of equivalent one-step Choquet martingale belief function. We then propose a dynamic Choquet pricing rule with bid-ask spreads showing that the discounted lower price process of a European derivative contract on the stock is a Choquet super-martingale. We also provide a normative justification in terms of a dynamic generalized no-arbitrage condition. We finally discuss the connections of the introduced dynamic pricing rule with time-consistency and dynamic risk measures. The talk is based on papers in collaboration with A.Cinfrignini and D. Petturiti Here is the link to attend online: Partecipa da computer, app per dispositivi mobili o dispositivo della stanza Fai clic qui per partecipare alla riunione<https://teams.microsoft.com/l/meetup-join/19%3ameeting_NzRkYzA3N2QtYzYyNi00…> ID riunione: 351 139 477 023 Passcode: RzjM3Z

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RoMaDS: A day on Statistical Physics for Machine Learning
by Stefano Vigogna 06 Jul '23

06 Jul '23

Dear all, we are glad to announce the workshop RoMaDS: A day on Statistical Physics for Machine Learning http://www.mat.uniroma2.it/~rds/statphyml.php which will take place at University of Rome Tor Vergata on September 15, 2023. Invited speakers: Andrea Agazzi Elena Agliari Giulio Biroli Matthieu Wyart Riccardo Zecchina Registration at https://docs.google.com/forms/d/e/1FAIpQLSeXVfuC4speVe0_xjGB0h-l3p6iU57lX2_… Is free but compulsory. Thanks for sharing with those who might be interested. The organizers Domenico Marinucci, Michele Salvi, Stefano Vigogna

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Reminder - Amases Summer School
by Roy Cerqueti 05 Jul '23

05 Jul '23

Dear all, this is to inform you that the first edition of the AMASES Summer School will be held next September 4-6 at the University of Rome "La Sapienza", Building CU002. The goal of the Amases summer schools is to train young scholars on topics that are relevant in the context of mathematics applied to the social sciences. This year the title of the school is Social, Financial and Economic Networks. More information on the website: https://www.amases.org/amases-summer-school-2023/ For any question, do not hesitate to contact the organizers: Fabrizio Lillo <fabrizio.lillo(a)unibo.it> Roy Cerqueti <roy.cerqueti(a)uniroma1.it> -- **Fai crescere le giovani ricercatrici e i giovani ricercatori* **con il 5 per mille alla Sapienza *Scrivi il codice fiscale dell'Università *80209930587 Cinque per mille <https://www.uniroma1.it/it/node/23149>*

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Call for expressions of interest in a research fellow position at the University of Milano-Bicocca
by marina pireddu 04 Jul '23

04 Jul '23

We would like to advertise a research fellowship, related to PRIN 2022 "Evolutionary Poisson Games: Theory and Applications", that will soon be available at the University of Milano-Bicocca, of the duration of 18 months, starting from the beginning of 2024. The net monthly salary will be about 1490 euros. The main goal of the research activity is the investigation of socio-economic phenomena by means of an evolutionary game theoretic approach, which leads to nonlinear dynamic models, to be studied via analytical and computational methods, in particular in relation to their stability, bifurcations and chaotic behavior. The research unit is composed by Fausto Cavalli, Ahmad Naimzada, Daniela Visetti and myself. Expressions of interest can be sent to marina.pireddu(a)unimib.it Best regards, Marina Pireddu

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I: Re: [EXTERN] Re: PhD and Postoc Positions - University of Basel and IBM Research Zürich
by Marco Alessandro Fuhrman 03 Jul '23

03 Jul '23

Buongiorno. Inoltro volentieri il messaggio seguente, nella speranza che possa trovare persone interessate. Cordiali saluti. Marco Fuhrman ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Cari, Sono Enea Monzio Compagnoni(https://www.linkedin.com/in/eneamc/ ) e faccio parte del gruppo di ricerca del Prof. Dr. Aurelien Lucchi(https://dmi.unibas.ch/de/personen/aurelien-lucchi/ ) presso l'Università di Basilea. Il nostro gruppo sta cercando due candidati al dottorato e un post-doc per una collaborazione con IBM Research di Zurigo. Serve che i candidati abbiano un forte background teorico in matematica e/o fisica, ottimizzazione e Quantum Computing. Ecco le posizioni: https://jobs.unibas.ch/offene-stellen/phd-position-in-the-field-of-theoreti… https://jobs.unibas.ch/offene-stellen/phd-position-in-the-field-of-optimiza… https://jobs.unibas.ch/offene-stellen/postdoc-position-in-the-field-of-quan… Più in generale, sentitevi liberi di contattarci se avete studenti interessati a Machine Learning che hanno anche un forte background in Probabilità, Calcolo Stocastico, Analisi (funzionale, reale, convessa, PDE), Ottimizzazione, e altri argomenti rilevanti. In tal caso, contattate direttamente Prof. Lucchi all'indirizzo aurelien.lucchi(a)unibas.ch Vi ringrazio dell'attenzione. Cordiali saluti, Enea Monzio Compagnoni

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SPASS Seminar: Jonathan Mattingly
by Andrea Agazzi 03 Jul '23

03 Jul '23

Dear Colleagues, We would like to invite you to the following SPASS <https://sites.google.com/unipi.it/spass> seminar, jointly organized by UniPi, SNS, UniFi and UniSi: *Ergodicity, Positive Lyapunov Exponents, and Partial Damping for Random Switching* by *Jonathan Mattingly* (Duke University) The seminar will take place *tomorrow TUE, 04.07.2023* at *14:00 CET* in Aula Seminari, Department of Mathematics, University of Pisa and streamed online here <https://meet.google.com/gji-phwo-vbg>. The organizers, A. Agazzi, G. Bet, A. Caraceni, F. Grotto, G. Zanco https://sites.google.com/unipi.it/spass --------------------------------------- *Abstract: I will consider some new models inspired by the PDEs/SPDE with complex dynamics such as the 2D Euler and Navier-Stokes equations. The models introduce randomness onto the system through a random splitting scheme. I will explain how the randomly split Galerkin approximations of the 2D Euler equations and other related dynamics can be shown to possess a unique invariant measure that is absolutely continuous with respect to the natural Liouville measure, despite the existence of other invariant measures corresponding to fix points of the PDEs. I will then explain how on proves that the dynamics with respect to this measure has positive Lyapunov exponents almost surely.Lastly, I will discuss recent results which show that the system has a unique invariant measure even when damping is applied to part of the system.This is joint work with Omar Melikechi, Andrea Agazzi, and David Herzog.*

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Call for expressions of interest in a research fellow position at the University of Milano-Bicocca
by marina pireddu 03 Jul '23

03 Jul '23

Dear All, we would like to advertise a research fellowship, related to PRIN 2022 "Evolutionary Poisson Games: Theory and Applications", that will soon be available at the University of Milano-Bicocca, of the duration of 18 months, starting from the beginning of 2024. The net monthly salary will be about 1490 euros. The main goal of the research activity is the investigation of socio-economic phenomena by means of an evolutionary game theoretic approach, which leads to nonlinear dynamic models, to be studied via analytical, simulative and computational methods, in particular in relation to their stability, bifurcations and chaotic behavior. The research unit is composed by Fausto Cavalli, Ahmad Naimzada, Daniela Visetti and myself. Expressions of interest can be sent to marina.pireddu(a)unimib.it Best regards, Marina Pireddu

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RTDA STATISTICA POLIMI
by Laura Maria Sangalli 01 Jul '23

01 Jul '23

E' appena stata bandita una posizione RTD-A presso il Dipartimento di Matematica del Politecnico di Milano nel settore SECS-S/01 sul tema: "Sviluppo e implementazione di modelli e algoritmi per analisi di dati complessi". Selezione pubblica per l'assunzione di 1 Ricercatore a tempo determinato (Junior) ai sensi dell'art. 24, comma 3, lettera a) Legge 30.12.2010, n. 240, Tempo pieno - Settore Concorsuale 13/D1 - STATISTICA, bandita con Decreto Direttoriale n. 6288 del 31/05/2023, pubblicato sulla G.U. del 20/06/2023, n. 46 (Codice procedura: 2023_RTDA_DMAT_4). Scadenza: 20-07-23 Dettagli della procedura: https://www.polimi.it/personale-docente/lavorare-al-politecnico/bandi-e-con… Programma di Ricerca: ll mondo della data science è attualmente impegnato nello sviluppo di strumenti per l'analisi di dati complessi (ad es. dati ad alta dimensione, gerarchici, non euclidei o con dipendenza spaziale e/o temporale) provenienti da diversi campi di applicazione. In questo contesto, si sono resi necessari modelli e algoritmi flessibili per fare esplorazione, inferenza e predizione in modo affidabile.La ricerca si concentrerà sullo sviluppo, l'implementazione e la validazione di modelli e algoritmi nell'ambito dello Statistical Learning con l'obiettivo di migliorare l'efficienza statistica e computazionale rispetto all'attuale stato dell’arte. La proposta è coerente con il tema del PNRR Ricerca e TT, High Performance Computing, Quantum Computing e riguarda tematiche di ricerca relative alla linea 'matematica per lo sviluppo sostenibile' del progetto del Dipartimento di Eccellenza del DMAT (www.mate.polimi.it/eccellenza/<http://www.mate.polimi.it/eccellenza/>). Per informazioni: Prof. Simone Vantini – simone.vantini(a)polimi.it<mailto:francesca.ieva@polimi.it> —— Laura Maria Sangalli MOX - Dipartimento di Matematica Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano - Italy (+39) 02 2399 4554 laura.sangalli(a)polimi.it<mailto:laura.sangalli@polimi.it> https://sangalli.faculty.polimi.it

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Estensione deadline special issue DEAF
by salvatore federico 30 Jun '23

30 Jun '23

Buongiorno, comunico che la deadline per la special issue DEAF "Advances in Optimal Control and Dynamic Games in Economics, Finance and Insurance" https://www.springer.com/journal/10203/updates/23587054 <https://www.springer.com/journal/10203/updates/23587054> di cui era stato dato annuncio in precedenza alla lista, è stata estesa al 30 settembre 2023 Salvatore Federico

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Seminario di Giovanni Conforti a Roma Tre il 7 luglio 2023
by Pietro Caputo 30 Jun '23

30 Jun '23

Venerdì 7 luglio 2023 alle ore 14:30, Aula M3 Dipartimento di Matematica e Fisica di Roma Tre, Largo San Leonardo Murialdo,1- 00146 Roma. Speaker: Giovanni Conforti (CMAP Ecole Polytechnique, Paris) Title: Stable convexity profiles for Hamilton Jacobi Bellman equations and applications to entropic optimal transport. Abstract: It is well known that solutions of the Hamilton-Jacobi-Bellman (HJB) equation with a convex terminal condition remain convex at all times. In this sense, the set of convex functions is stable under the action of the HJB equation and this result can be derived as a simple consequence of the Prékopa-Leindler inequality. In this talk I will illustrate a probabilistic method based on the analysis of coupling by reflection on a system of forward-backward stochastic differential equations (FBSDEs) that prompts the existence of stable sets for the HJB equation composed of functions that are only "asymptotically convex", but not necessarily convex. If time allows, I will move on to illustrate two consequences of this result to the Schrödinger problem, a.k.a. entropic optimal transport problem. The first is that the optimal coupling satisfies the logarithmic Sobolev inequality and the second one is that Sinkhorn's algorithm converges exponentially fast in the number of iterations to the optimal coupling. Partially based on joint work with A.Durmus and G.Greco

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