Bollettino settimanale
Pagina d'informazione di seminari ed eventi scientifici che avranno luogo settimanalmente per lo più in area romana.
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Settimana 18/05/2026 - 22/05/2026
NEWS
Si comunica che è uscita la classifica del 2026 di research.com - Best Mathematics Universities in Italy 2026.
L'Università degli Studi di Roma "Tor Vergata" è seconda in Italia (dietro il Politecnico di Milano) per Matematica:
sito RANKING research.com
Nel link sottostante trovate la Newsletter n.7 del progetto di Dipartimento MatMod@TOV, con l'invito di leggerla ed a darne massima diffusione:
Click below for PDF file Download:
NEWSLETTER n.7
Seminari
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Geometry Seminar
Date: 19 May 2026
Schedule: h: 14:30 Rome Time
Where: Conference Room 1101 "C. D'Antoni"
Speaker: Xavier Roulleau - Université d'Angers
Title: " Point and line arrangements: moduli spaces and operator actions "
Abstract:
Point and line arrangements in the plane arise in various contexts, including topology
(Zariski pairs), algebra (freeness), and combinatorics. Notably, Hirzebruch utilized
these configurations to construct specific ball-quotient surfaces. In this talk,
I will introduce operators acting on these arrangements and their corresponding parameter spaces.
We shall see how certain elliptic modular surfaces and modular curves can be recovered
as parameter spaces of point arrangements under the action of these operators.
Note: This talk is part of the activity of the MIUR Department of Excellence Project MatMod@TOV (2023-2027) and 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)
Antonio Trusiani ( 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
DocTorV SEMINAR
Date: Monday 18 May 2026
Schedule: 16:00 - Rome Time
Where: Conference Room: 1101 "C. D'Antoni"
Title:" The topological Brower group "
Speaker: Matteo Verni - Sorbonne Universitèe, Paris, France
Abstract:
The topological Brauer group of a (topological) manifold X is
nothing more than the torsion subgroup of its third degree singular
cohomology.
Its name and significance comes from algebraic geometry: for example, it
plays a fundamental role in rationality problems. In this talk we will
sketch its basic property, usage, and discuss one method of computing it,
bringing together topology, group theory and homological algebra, which has
seen recent usage.
N.B.: This talk is part of the activity of the MIUR Excellence Department Project Mat-Mod@TOV (CUP E83C23000330006).
Organizing Committee:
Andrea Pizzi (mail to contact)
Further Info and Program: For information contact to Arianna Vicari or Andrea Pizzi directly by E-mail.
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
COMPLEX ANALYSIS SEMINAR
Date: 19 May 2026
Schedule: 14:30 - Rome Time
Where: Conference Room: 2001
Title: " Some problems concerning canonical metrics in Hermitian non-Kähler geometry "
Speaker: Daniele Angella - University of Firenze
Abstract:
We investigate several possible notions of "canonical'' metrics that naturally arise in Hermitian non-Kähler geometry.
In particular, we study an analogue of the Yamabe problem in the non-Kähler setting, concerning the existence of Hermitian metrics with constant scalar curvature with respect to the Chern connection. We also develop a moment map interpretation of the Chern scalar curvature in the locally conformally Kähler setting. Another tool for highlighting ``canonical structures'' is the Chern–Ricci flow. The long-time behavior of its solutions is expected to reflect the underlying complex structure, and we present some evidence of this in the case of compact complex surfaces. This talk is based on joint work with Simone Calamai,
Mauricio Corrêa, Francesco Pediconi, Cristiano Spotti, Valentino Tosatti, and Oluwagbenga Joshua Windare.
Organizing Committee:
Leandro Arosio (mail to contact)
Filippo Bracci (mail to contact)
Eleonora Di Nezza (mail to contact)
Further Info and Program: COMPLEX ANALYSIS SEMINAR page Click here
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
DIFFERENTIAL EQUATIONS SEMINAR
Date: 19 May 2026
Schedule: 14:30 - Rome Time
Where: Conference Room "R. Dal Passo "
Title: " Standing waves for Hartree system with Hardy-Littlewood-Sobolev critical exponentey"
Speaker: Lun Guo - South-Central Minzu University, Wuhan
Abstract:
In this talk, I will give some recent results on the Hartree system with
Hardy-Littlewood-Sobolev critical exponent. Under some technical conditions on potentials,
we investigate the existence and multiplicity of standing waves by using variational
method combined with Brouwer degree theory and Ljusternik-Schnirelmann theory.
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 Roma Tor Vergata
Dipartimento di Matematica
Numerical Analisys Seminar
Date: 20th May 2026
Schedule: 14:00 - Rome Time
Where: Conference Room 1201 " R. Dal Passo"
Speaker: Lothar Reichel - Kent State University
Title: "Randomized iterative methods for inverse problems "
Abstract:
Randomized methods can be applied to speed up the computation of the singular value decomposition
of a large matrix of low rank. They also can be used to accelerate the convergence of Krylov subspace
methods for the solution of certain linear systems of equations. This talk discusses several approaches
to apply randomized methods to the solution of large-scale linear systems of equations that arise when solving
linear inverse problems.
These kind of problems appear when one seeks to determine the cause of an observed effect.
This talk is part of the activity of the MIUR Excellence Department Projects MathMod@TOV CUP E83C23000330006.
Organizing Committee:
Carla Manni (Contact Mail)
Mariarosa Mazza (Contact Mail)
Hendrik Speleers (Contact Mail)
Further Information: contact Mazza's Mail
Streaming Link (MS Teams): link Team This seminar will be held in mix mode: Teams and presence.
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
Algebra and Representation Theory Seminar (A.R.T.S.)
Date: Friday 08th May 2026
Schedule:
FIRST SEMINAR 14:30 - Rome Time
SECOND SEMINAR 16:00 - Rome Time
Where: Conference Room 1201 - R. Dal Passo
FIRST SEMINAR 14:30 Rome Time
Speaker: Xujia CHEN - I.S.T.A. Wien
Title: "A product operation on disk fiber bundles and its relation to the Lie bracket in graph homology "
Abstract:
In this talk we will be concerned with smooth, framed fiber bundles whose fibers are the standard d-dimensional disk, trivialized along the boundary. "Kontsevich's characteristic classes" are invariants defined for these bundles: given such a bundle π : E ⟶ B , we can associate to it a collection of cohomology classes in H*(B). On the other hand, there is a "bracket operation" for these bundles defined by Sander Kupers: namely, given two such bundles π1 and π2 as input, we can output a "bracket bundle" [π1, π2]. I will talk about this bracket bundle construction and a formula relating the Kontsevich's class of [π1, π2] with those of π1 and π2 . The main input of the proof is a generalization of the Fulton-MacPherson configuration spaces.
This is joint work with Robin Koytcheff and Sander Kupers.
N.B.: this talk is part of the activity of the MIUR Excellence Department Project MatMod@TOV (CUP E83C23000330006).
SECOND SEMINAR 16:00 Rome Time
Speaker: Olivier SCHIFFMANN - CNRS - Paris Saclay
Title: "Khovanov-Lauda-Rouquier type algebras for the projective line "
Abstract:
The Khovanov-Lauda-Rouquier (KLR) algebras associated to quivers have been used to categorify
positive halves of quantum enveloping algebras of Kac-Moody algebras.
Suitable quotients of these algebras, the cyclotomic KLR algebras, categorize
highest weight integrable re-presentations, and also lead to interesting knot and link invariants.
In this talk, we will present some work which goes towards an analogous theory in which the quiver gets
replaced by a smooth projective curve (the case of the projective line is already interesting).
This is joint work with Fang Yang.
This is joint work with Fabricio Dos Santos and Aleksandr Trufanov.
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
Eventi
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
Mini-Course by Prof. Sergei Tabachnikov
Date: Monday 11 MAY 2026
Schedule:
Thursday 21 May 2026, 2:30 pm Rome Time - (Aula D'Antoni)
Friday 22 May 2026, 10:00 am Rome Time - (Aula D'Antoni)
Where: Conference 1101 "C. D'Anotni"
Speaker: Sergei Tabachnikov - Penn State University
Title: Flavors of Bicycle Mathematics
Abstract:
Abstract:* This talks will concern with a naive model of bicycle motion: a
bicycle is a segment of fixed length that can move so that the velocity of
the rear end is always aligned with the segment. Surprisingly, this simple
model is quite rich and has connections with several areas of research,
including completely integrable systems, and many questions are
open-ended.
Here is the list of problems that I hope to discuss:
(i) The trajectory of the front wheel and the initial position of the
bicycle uniquely determine its motion and its terminal position; the
monodromy map sending the initial position to the terminal one arises. This
mapping is a Moebius transformation, a remarkable fact that has various
geometrical and dynamical consequences.
(ii) The rear wheel track and a choice of the direction of motion uniquely
determine the front wheel track; changing the direction to the opposite,
yields another front track. These two front tracks are related by the
bicycle (Backlund, Darboux) correspondence, which defines a discrete time
dynamical system on the space of curves. This system is completely
integrable and it is closely related with another, well studied, completely
integrable dynamical system, the filament (a.k.a binormal, smoke ring,
local induction) equation.
(iii) Given the rear and front tracks of a bicycle, can one tell which way
the bicycle went? Usually, one can, but sometimes one cannot. The
description of these ambiguous tire tracks is an open problem, intimately
related with Ulam's problem in flotation theory (in dimension two): is the
round ball the only body that floats in equilibrium in all positions? This
problem is also related to the motion of a charge in a magnetic field of a
special kind. It turns out that the known solutions are solitons of the
planar version of the filament equation.
(iv) Can one discretize the previous problem, that is, to replace curves by
polygons? I shall present some partial results in this direction.
(v) Bicycle geodesics are bicycle paths whose front track's length is
critical among all bicycle paths connecting two given placements of the
line segment. In the plane, these geodesic front tracks are elastica, and
in space they are Kirchhoff rods.
(vi) Is it possible to ride bicycle so that the rear wheel tracks coincides
with the front wheel one (other than going straight, of course)?
Such "unicycle" tracks tend to behave very chaotically but, so far, these are mostly only experimental observations.
Organizing Committee:
Alfonso Sorrentino (mail to)