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Seminar by Nedialko Bradinoff (KTH)
by Maurice Duits 05 Nov '26

05 Nov '26

Dear all, I would like to announce the talk by Nedialko Bradinoff this coming Monday. Best wishes, Maurice Duits Speaker: Nedialko Bradinoff (Royal Institute of Technology, KTH) Date: Monday November 9 Time: 16:15–17:15 Place: Sala di Consiglio, Mathematics Department Guido Castelnuovo, Sapienza Universita Title: On CUE linear statistics with slowly decaying Fourier coefficients Abstract: The Circular Unitary Ensemble, introduced by Dyson in the 1960s, is one of the fundamental models in random matrix theory. In this talk I will focus on the study of its linear statistics from the perspective of a beautiful connection to Toeplitz determinants. Starting with the celebrated Strong Szegö Limit Theorem for functions $f$ in $H^{1/2}$, I will pass through overviewing some asymptotic results regarding linear statistics with Fisher-Hartwig singularities which are an object of active research and have been crucial to beautiful applications including connections to the study of the Ising model and convergence to Gaussian multiplicative chaos measures. This will lead the talk to recent joint results with Maurice Duits about a broader class of linear statistics associated to functions $f$ with Fourier coefficients $f_k=\mathcal{O}(1/k)$. I will discuss the operator theoretic approach of the proof in this work making use of the Baker-Campbell-Hausdorff formula from Lie algebras. -- *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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Seminario Davide Risso presso Politecnico di Milano
by Laura Maria Sangalli 04 Nov '26

04 Nov '26

Cari Colleghi, A seguire annuncio presso il Politecnico di Milano Davide Risso, Università degli Studi di Padova 18.11.26 ore 14:30 – Aula Saleri, Dipartimento di Matematica, Politecnico di Milano Link: https://mox.polimi.it/mox-colloquia-seminars-list/mox-seminars/?id_evento=2… Titolo: SLICE: spatial latent inference of common expression profiles Abstract: Spatial transcriptomics has revolutionized our ability to measure gene expression within intact tissues at single-cell and subcellular resolution. In practice, gene expression patterns may occur at different resolutions: some genes follow broad spatial trends across the tissue, whereas others show more localized patterns associated with specific regions, cell populations, or microenvironments. In this talk, I will present SLICE, a Bayesian model that jointly represents spatial and latent sources of variation. The model combines a multiscale spline representation of spatial coordinates with a low-rank latent component and a Bayesian hierarchy for recurrent gene-specific spatial profiles. For scalability, inference uses stochastic variational methods, with automatic differentiation and GPU acceleration. This is joint work with Alex Cecchetto and Francesco Denti. Un caro saluto, Laura —— 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 https://sangalli.faculty.polimi.it

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PhD opportunities at ENSAE Paris - Roxana Dumitrescu
by Jodi Dianetti 04 Nov '26

04 Nov '26

Dear Colleagues, On behalf of Roxana Dumitrescu, I would like to share several PhD studentship opportunities at ENSAE Paris, focusing on mean field games and mean field control, learning, and applications to energy markets. Several funding calls will open throughout the current academic year for positions starting in September 2027. The first application deadline is December 10 and concerns a funding opportunity specifically dedicated to international students who completed their studies outside France. Interested candidates are invited to contact Roxana Dumitrescu at Roxana.Dumitrescu(a)ensae.fr in the coming weeks (ideally by November 20 for the December 10 call). Please feel free to share this opportunity with potentially interested candidates. Best regards, Jodi Dianetti

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PhD course Wick calculus&Wick renormalization
by Stefania Ugolini 04 Nov '26

04 Nov '26

PhD course: Wick calculus and Wick renormalization Prof. Frédéric Patras (Université Cote d’Azur) The course will run from 6 to 26 November 2026 over four days, with four hours of lectures each day and with sessions from 10:00 to 12:00 and from 14:00 to 16:00 . Classes will be held in the following rooms: * 06/11 aula Mm , via Mangiagalli 37 * 11/11 aula C03 , via Mangiagalli 25; * 20/11 aula Mn, via Mangiagalli 32, in orario 10.00/12.00 + aula G12, via Golgi 19, in orario 14.00/16.00 * 26/11 aula BETA – Informatica, via Celoria 18. For further information, please contact stefania.ugolini(a)unimi.it The PhD course is organized by Francesco De Vecchi (Università di Pavia), Frédéric Patras (CNRS-Université Cote d’Azur) e Stefania Ugolini (Università di Milano) as the fourth scientific event of the Intensive Research Trimester titled: "Algebraic & Geometric Structures in Stochastic Calculus" of the Center for Training and Research, in the framework of the Excellence Project 2023-2027 of the Department of Mathematics " “F. Enriques”, Milano. https://agssc.unimi.it/

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Workshop Rough paths and related topics
by Stefania Ugolini 02 Nov '26

02 Nov '26

Workshop: Rough paths and related topics Tuesday, November 10, 2026 Milano, Room MM, Via Mangiagalli 37. Schedule: 14h-15h Lorenzo Zambotti (University of Sorbonne), Product of differential forms with distributional coefficients 15h-16h Gianmario Tessitore ( University of Milano Bicocca ), Sewing and Regularity gains for convolution integrals (joint work with Davide Addona and Luca Lorenzi). Lorenzo Zambotti Abstract: We discuss how Hairer’s reconstruction theorem allows to define a canonical product of differential forms with distributional coefficients, in a regularity regime which would be inaccessible for standard distributions. Gianmario Tessitore Abstract: We study convolution integrals driven by Hölder and rough signals in the presence of a smoothing semigroup. A semigroup-adapted sewing procedure allows us to quantify their gain in spatial regularity. We then extend the construction to singular integrands, which may blow up near the initial time, by means of weighted Hölder estimates. The resulting bounds are applied to mild Young equations with irregular initial data. We conclude with perspectives involving stochastic sewing and rough factorisation arguments. The workshop is organized by Francesco De Vecchi (Università di Pavia), Frédéric Patras (CNRS-Université Cote d’Azur) e Stefania Ugolini (Università di Milano) as the third scientific event of the Intensive Research Trimester titled: "Algebraic & Geometric Structures in Stochastic Calculus" of the Center for Training and Research, in the framework of the Excellence Project 2023-2027 of the Department of Mathematics " “F. Enriques”, Milano. https://agssc.unimi.it/

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Seminar Celli at Tor Vergata, 09.11
by Michele Salvi 02 Nov '26

02 Nov '26

Dear all, On Monday, November 9, at 14h00 in Aula Dal Passo in the Math Department of the University of Rome Tor Vergata, RoMaDS (https://www.mat.uniroma2.it/~rds/events.php) will host Lucia Celli (University of Luxembourg) with the seminar “Quantitative CLTs for neural network at random initialization” Abstract: New quantitative bounds for the convergence of wide feed-forward neural networks to Gaussian processes are presented. For fully connected networks with i.i.d. weights and Gaussian biases, convergence at rate $O(n^{-1/2})$ is established in the Kolmogorov and Wasserstein distances when the network is evaluated at a single input, and in the convex distance when it is evaluated at multiple inputs, as the hidden-layer width $n \to \infty$. The bounds are explicit in the hyperparameters of the network and they give us the possibility to study the infinite depth-width limit. The main tool is Stein's method, following the approach of Chatterjee (2008) and subsequent extensions by Kasprzak, Peccati (2022) and Lachieze-Rey, Peccati (2017). The talk will focus on the proof of the Kolmogorov distance bound, where a key step consists in solving a Stein equation associated with the square of a Lipschitz function. We encourage in-person partecipation. Should you be unable to come, here is the link to the Teams streaming: https://teams.microsoft.com/meet/31063852152728?p=gXh2dasNv6Msd83RWS The seminar is part of the Excellence Project MatMod@TOV.

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Bandi GNAMPA - scadenza 16 dic 2026
by Francesco Caravenna 02 Nov '26

02 Nov '26

Sono stati pubblicati i bandi GNAMPA per le seguenti attività: - Professori Visitatori - Organizzazione di Convegni, Scuole, Workshop e Seminari - Progetti di Ricerca 2027 La scadenza per presentare le domande è il 16 dicembre 2026. I bandi e le modalità di presentazione delle domande sono disponibili alla pagina seguente: https://www.altamatematica.it/gnampa/2026/10/29/prossime-scadenze/ Cordiali saluti, FC -- __________________________________ Francesco Caravenna Dipartimento di Matematica e Applicazioni Università degli Studi di Milano-Bicocca https://fcaraven.github.io/ __________________________________

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SPASS seminar: Antonio Agresti and Theresa Lange - Tue 3 Nov at 14.00
by Lorenzo Marino 31 Oct '26

31 Oct '26

Dear Colleagues, We are pleased to invite you to the following two SPASS seminars https://sites.google.com/unipi.it/spass/seminars?authuser=0 <https://sites.google.com/unipi.it/spass/seminars?authuser=0%3E> (jointly organised by UniPi, SNS, UniFi and UniSi): Regularization by transport noise of 3D Navier-Stokes equations by Antonio Agresti (Università di Roma La Sapienza) and Transport noise in natural convection by Theresa Lange (Max Planck Institute for Mathematics in the Sciences) Date and time: Tuesday, November 3rd at 14:00 CET Place: Aula Mancini, Palazzo della Carovana, Scuola Normale Superiore, Pisa Abstract Agresti: Finite-time blow-up of smooth solutions to the forced 3D Navier-Stokes equations (NSEs) has recently been claimed. A long-standing conjecture in stochastic fluid dynamics suggests that physically motivated noise can prevent (potential) blow-up of solutions to the 3D NSEs. In this talk, I will illustrate how suitably chosen transport noise, motivated by models of turbulent fluid transport, yields global-in-time smooth solutions to the stochastic 3D NSEs with high probability. The arguments reveal new connections between homogenization techniques and scaling limits for SPDEs. Abstract Lange: In this talk, we will explore the role of transport noise in the context of natural convection: a fluid confined between two horizontally aligned plates will be heated from below and cooled from above. At a high temperature difference at the boundaries, the fluid will be turbulent and it is a longstanding challenge in physics and engineering to characterise the average heat flux (called the Nusselt number Nu) in terms of said temperature difference. In the mathematical literature various results in this direction have been obtained in the form of upper bounds on Nu aligned with physicists' predictions. In this talk, I will present a novel viewpoint on a treatment of this problem via stochastic parametrisation. Link for online meeting: https://teams.microsoft.com/meet/390074246582827?p=Xp6u4MkqCTuuHNvlpl On behalf of the organisers, Lorenzo Marino

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SPASS seminar: Keefer Rowan
by Mario Maurelli 30 Oct '26

30 Oct '26

Dear colleagues, We would like to invite you to the following SPASS seminar, jointly organized by UniPi, SNS, UniFi (abstract below): *Effective Lagrangian regularity and the uniqueness threshold for random Hölder velocity fields* by *Keefer Rowan* (EPFL Lausanne) The seminar will take place on *Tuesday, 10.11.2026* at *14:00 CET* in Aula Seminari, Dipartimento di Matematica, UNIPI and streamed online at this link <https://meet.google.com/wfg-cyqy-ewv>. Abstract: We discuss the behavior of the ordinary differential equations, flow maps, and continuity equations associated to autonomous random velocity fields that admit a natural multiscale finite range decomposition. The velocity fields we consider are only Hölder regular in space, and thus the associated ODE and continuity equation are not a priori well-posed. However, above the critical threshold of 1/2, due to multiscale stochastic cancellations, we show well-posedness is almost surely restored away from the zero level set of the velocity field. This threshold marks a genuine transition, as demonstrated by examples lying below the threshold that exhibit robust ill-posedness. Best regards Mario Maurelli https://sites.google.com/unipi.it/spass <https://www.google.com/url?q=https://sites.google.com/unipi.it/spass&source…>

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Next Webinar PRISMA - Nov 10, 2026 - Speakers: Francesco Russo & Elena Bandini
by Luciano Campi 30 Oct '26

30 Oct '26

Dear all Unfortunately in my previous message the order of speakers was wrong, here is the correct announcement: Luciano ------------------------------------- Dear colleagues and friends We are happy to announce the next webinar of the team UMI - PRISMA (http://www.umi-prisma.polito.it/) PRISMA webinars follow a colloquium-style format designed to foster exchange and discussion within the Italian probability and statistics community. Each session features two speakers, who give two closely connected 30-minute talks providing the community with a perspective on their research area. Over the past few years, recordings of the seminars have been made available on the UMI YouTube channel: https://youtube.com/playlist?list=PLmySpc-jrtAMq84VH71evyqPc1hl6eEQb The next event is scheduled for Tuesday, Nov 10, 2026. The speakers will be Elena Bandini (Università di Bologna) and Francesco Russo (ENSTA), who will speak on: Weak Dirichlet processes, path-dependent martingale problems and BSDEs according to the following schedule 16:00 Francesco Russo 16:30 Break and discussions 16:45 Elena Bandini 17:15 Conclusions and discussions The abstract can be found in the attached pdf. The seminars will be streamed on Teams at the following link: <https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> teams.microsoft.com<https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> [X]<https://teams.microsoft.com/meet/3990193635962130?p=dPpioonTpoD8sCgnfh> We look forward to seeing many of you there! Luciano Campi, Maurizia Rossi -------------------------------------------------------- Luciano Campi Full Professor University of Milan Department of Mathematics Email: luciano.campi(a)unimi.it<mailto:luciano.campi@unimi.it> Web: sites.google.com/site/lucianocampi1<http://sites.google.com/site/lucianocampi1>

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