Bollettino settimanale
Pagina d'informazione di seminari ed eventi scientifici che avranno luogo settimanalmente per lo più in area romana.
Per la pubblicazione rivolgersi a Giorgio Chiarati che ne cura la gestione.
Per consultare la pagina di tutti i seminari di Dipartimento Click here.
Settimana 01/12/2025 - 05/12/2025
Seminari
Nel link sottostante trovate la Newsletter n.6 del progetto di Dipartimento MatMod@TOV, con l'invito di leggerla ed a darne massima diffusione:
Click below for PDF file Download:
NEWSLETTER n.6
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Geometry Seminar
Date: 02 december 2025
Schedule:
14:30 Rome Time
Where: Conference Room 1101 "C. D'Antoni"
Speaker:
Dimitri Wyss - E.P.F.L.
Title: "BPS-invariants for K3 surfaces and p-adic integration "
Abstracts :
I will report on work in progress with M. Groechenig and P. Ziegler where we aim to express certain enumerative invariants,
so called refined BPS-invariants, in terms of integrals on p-adic analytic manifolds naturally associated with the enumerative problem.
In the case of 1-dimensional sheaves on a K3 surface,
our work implies that these invariants are independent of the Euler-characteristic, confirming a conjecture of Toda.
Note: This talk is part of the activity of the MIUR Department of Excellence Project MatMod@TOV (2023-2027), Prin 2022 Moduli Spaces and Birational Geometry and Prin PNRR 2022 Mathematical Primitives for Post Quantum Digital Signatures
Organizing Committee:
Codogni Giulio (Contact Mail)
Lido Guido Maria ( Contact Mail)
Francesca Carocci ( Contact Mail)
Further Information: Click here for geometry webpage
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Seminario di Storia delle Matematiche
Date: 01th December 2025
Schedule: 11:15 - Rome Time
Where: Conference Room 2001
Title:" Andrej N. Kolmogorov, "The general theory of dynamical systems and classical mechanics" (1957): alla scoperta di una nuova grammatica metrica e spettrale per lo studio dei sistemi dinamici "
Speaker: Isabella Fascitiello - Univ. di Roma Tre
Abstract: Il testo "The general theory of dynamical systems and classical mechanics" (1957) di Andrej N. Kolmogorov rappresenta un momento cruciale nella storia della matematica del Novecento: non solo per l'avvio di quella che diventerà la teoria KAM, ma per la proposta di una nuova grammatica concettuale capace di reinterpretare la meccanica classica attraverso gli strumenti della teoria ergodica e dell'analisi spettrale. Lungi dal limitarsi a un contributo tecnico, il saggio si configura come un manifesto metodologico, un programma di ricerca, in cui la retorica della scrittura diventa parte integrante della costruzione teorica. Nel mio intervento analizzerò il lavoro di Kolmogorov, testo pubblicato negli atti del convegno dell'International Congress of Mathematicians di Amsterdam del 1954, nella prospettiva storico-matematica, mettendo in luce il modo in cui egli costruisce una rete di riferimenti che unisce meccanica classica, teoria ergodica e teoria degli operatori, attraversando decenni e tradizioni diverse. Mostrerò inoltre come l'architettura argomentativa del discorso - nata originariamente per una conferenza plenaria - sia pensata per coinvolgere, persuadere e generare entusiasmo, guidando il lettore e le nuove generazioni di studiosi verso inediti orizzonti di ricerca. "The paper had a great influence on many generations of mathematicians and physicists," avrebbe scritto in seguito Yakov I. Sinai (1989).
Organizing Committee:
Riccardo Bellé (mail to contact)
Further Info and Program: For information contact to Riccardo Bellé directly by E-mail.
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Operator Algebra Seminar
Date: Wednesday - 03rd December 2025
Schedule: - 16:00 - Rome Time -
Where: Conference Room 1201" R. Dal Passo "
Title:" Graph products, ε-independence, and atoms "
Speaker: Ian Charlesworth - Cardiff University, School of Mathematics
Abstract:
In both classical and free probability theory, the central limit
distribution can be modeled on a symmetric or free Fock space. The
$q$-deformed Gaussians are the corresponding variables on a $q$-deformed
Fock space (being the free semicirculars when $q = 0$ and the classical
Gaussians when $q=1$), which raises the question of whether they arise from
a central limit-type theorem. To find such a situation, Młotkowski
introduced $\varepsilon$-independence as an interpolation between free and
classical independence, where distributions (or von Neumann algebras) are
assigned to the vertices of a graph with adjacency matrix $\varepsilon$,
and are placed in a larger algebra in such a way that they are independent
when they correspond to adjacent vertices and free otherwise. The
corresponding product operation on von Neumann algebras corresponds to the
idea of a graph product of groups, studied by Green. In this talk I will be
interested in the following question: when do type I summands appear in the
graph product of von Neumann algebras? The answer is pleasantly
combinatorial, and can be described based on a family of polynomials built
using the cliques in the graph (first arising in work of Cartier--Foata in
1969), and the behaviour of type I summands in the input algebras.
This is joint work with David Jekel.
Note: This talk is part of the activity of the MUR Excellence Department Project MatMod@TOV (CUP E83C23000330006)
Organizing Committee:
Vincenzo Morinelli (mail to contact)
Roberto Longo (mail to contact)
Daniele Guido (mail to contact)
Giuseppe Ruzzi (mail to contact)
Sebastiano Carpi (mail to contact)
Further Info: Click here for Operator Algebras Seminar Page
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
DIFFERENTIAL EQUATIONS SEMINAR
Date: 02th December 2025
Schedule: 14:30 - Rome Time -
Where: Conference Room "R. Dal Passo "
Title: " Zero viscosity limit for KAM solutions of the 2D Navier-Stokes equation "
Speaker: Luca Franzoi - Univ. di Milano
The question of the stability for solutions of the Euler and the Navier-Stokes equations in the vanishing viscosity regime is one of the most important problems in fluid dynamics. The goal of this talk is to present a recent result where we construct a family of solutions of the forced 2D Navier-Stokes equation, bifurcating from given time quasi-periodic solutions of the incompressible 2D Euler equations and admitting vanishing viscosity limit to the latter. This limit holds uniformly for all times and independently of the size of the external forcing term. After the overview of the literature and the presentation of the main statement, I will give the main ideas for the construction of such solutions. In particular, our proof is based on the search of an approximate solution, up to an error of order $O( u^2)$, and the invertibility of the linearized Navier-Stokes operator at a quasi-periodic solution of the Euler equation. This is a joint work with Riccardo Montalto.
Nota: Questo seminario fa parte delle attività finanziate dal progetto MIUR Dipartimento d'eccellenza MatMod@TOV (2023-27) CUP E83C23000330006
Note: This talk is part of the activity of the MIUR Excellence Department Project MatMod@TOV (2023-27) CUP E83C23000330006
Organizing Committee:
Riccardo Molle (mail to contact)
Alfonso Sorrentino (mail to contact)
Further Info and Program: Click here
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
Algebra and Representation Theory Seminar
Date: Friday th November 2025
Schedule:
FIRST SEMINAR 14:30 Rome Time
SECOND SEMINAR 16:00 Rome Time
Where: Conference 1201 - Room Dal Passo
FIRST SEMINAR 16:00 Rome Time
Speaker: Chris MILIONIS - Newcastle University
Title: "The center of the (semisimple) BMW algebras and an Okounkov-Vershik like approach to its finite dimensional representations "
Abstract:
The BMW algebras Bn(q,t) are the q-analogues of the
Brauer algebras and are in Schur-Weyl duality with quantum groups of types B, C, D.
In the semisimple case, they fit in a multiplicity free chain of algebras and are equipped with a remarkable family of commuting elements,
called the Jucys-Murphy (JM) elements.
In this talk, we will determine the exact parameters q, t in C
with q not a root of unity for which the centers of the BMW algebras are given as a subalgebra of the algebra of symmetric Laurent polynomials
in the JM elements, called Wheel Laurent polynomials. As a corollary, we determine when the algebra generated by the JM elements is maximal
commutative and in these cases, give an Okounkov-Vershik like approach to its finite dimensional representations.
If time permits, we will talk about how one can get explicitly defined combinatorial formulas for a complete set
of primitive idempotents in Bn(q,t) using this approach.
Note: this talk is part of the activity of the MIUR Excellence Department Project MatMod@TOV (CUP E83C23000330006).
SECOND SEMINAR 14:30 Rome Time
Speaker: Valerio Melani - Univ. di Firenze
Title: "Two-dimensional versions of the affine Grassmannians "
Abstract:
Let G be a complex affine algebraic group. If C is a smooth algebraic curve and x is a point in C, the affine Grassmannian is an algebro-geometric object that parametrizes G-bundles on C together with a trivialization outside x. Alternatively, one can define the affine Grassmannian as the quotient G((t))/G[[t]] .
In this talk we present possible analogs for the affine Grassmannian, in the setting where the curve is replaced by a smooth projective surface, and the trivialization data are specified with respect to flags of closed subschemes. We also obtain parallel descriptions in terms of quotients of the double loop group G((t))((s)). Based on a joint work with A. Maffei and G. Vezzosi.
Note: this talk is part of the activity of the MIUR Excellence Department Project MatMod@TOV (CUP E83C23000330006).
Organizing Committee:
Fabio Gavarini (mail to)
Niels Kowalzig (mail to)
Martina Lanini (mail to)
Further Info: Click here for A.R.T.S. Webpage
Streaming Link (MS Teams): This seminar will be held in person
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