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Settimana 04/03/2024 - 08/03/2024
Seminari
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Geometry Seminar
Date: 05th March 2024
Schedule: 14:30 Rome Time
Where: Conference Room 1201 "Roberta Dal Passo"
Speaker: Víctor González Alonso - Leibniz Universität Hannover
Title: " Embedded deformations of curves with maximal variation of Hodge structure
Abstract:
Given a family of complex (smooth projective) manifolds, one can measure its non-triviality by looking at how much the Hodge structures of the fibres change. This leads to the notion of maximal (infinitesimal) variation of Hodge structure (IVHS).
In the case of families of curves, results of Lee-Pirola and of myself with Torelli imply that a general deformation of any curve has maximal IVHS. This is however not so clear if one wants the deformation to keep some further structure, such as the gonality of the curve or an
embedding into a given surface. For example, it was only recently proved by Favale and Pirola that every smooth plane curve admits a deformation as a plane curve with maximal IVHS, and the question remains open for deformations of curves inside any other surface.
In this talk I will present a joint work in progress with Sara Torelli extending this result to curves in P1 x P1, which turns out to be way more involved than the plane case.
Organizing Committee:
Codogni Giulio (Contact Mail)
Lido Guido Maria ( 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
DIFFERENTIAL EQUATIONS SEMINAR
Date: 05th March 2024
Schedule: 16:00 - Rome Time
Where: Conference Room "R. Dal Passo"
Title: " Chaotic phenomena for singular systems on surfaces "
Speaker: Stefano Baranzini Università di Torino
Abstract:
Nota: Questo seminario fa parte delle attività finanziate dal progetto MIUR Dipartimento d'eccellenza MAT@Mod
Note: This talk is part of the activity of the MIUR Excellence Department Project MAT@Mod
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
RoMaDS - Rome Centre on Mathematics for Modelling and Data ScienceS
Date: March 6th 2024
Schedule: 14:30 - Rome Time
Where: Conference Room "R. Dal Passo"
Title: " Strong solutions to submodular mean field games with common noise and related McKean-Vlasov FBSDEs "
Speaker: Jodi Dianetti - Bielefeld University
Abstract:
We study multidimensional mean field games with common noise and the related system of McKean-Vlasov
forward-backward stochastic differential equations deriving from the stochastic maximum principle.
We first propose some structural conditions which are related to the submodularity of the underlying mean field
game and are a sort of opposite version of the well known Lasry-Lions monotonicity.
By reformulating the representative player minimization problem via the stochastic maximum principle,
the submodularity conditions allows to prove comparison principles for the forward-backward system, which correspond
to the monotonicity of the best reply map. Building on this property, existence of strong solutions is shown
via Tarski’s fixed point theorem, both for the mean field game and for the related McKean-Vlasov forward backward system.
In both cases, the set of solutions enjoys a lattice structure with minimal and maximal solutions which can be approximated
by the simple iteration of the best response map and by the Fictitious Play algorithm.
Nota: Questo seminario fa parte delle attività finanziate dal progetto MIUR Dipartimento d'eccellenza MAT@Mod CUP E83C23000330006
Note: This talk is part of the activity of the MIUR Excellence Department Project MAT@Mod CUP E83C23000330006
Organizing Committee:
Domenico Marinucci (coordinator)
Michele Salvi
Stefano Vigogna
Further Info and Program: Click here for RoMaDS event Page
Streaming Link (MS Teams):
Eventi
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
PhD Course
Rational Curves and Surfaces for Geometric Modelling
Period: 22.02.24 - 26.03.24
Speaker: Prof. Hartmut Prautzsch Karlsruhe Institute of Technology
Schedule:
22/02/24, 10:30 - 13:00 Aula D'Antoni
28/02/24, 10:30 - 13:00 Aula Dal Passo
29/02/24, 14:00 - 16:30 Aula D'Antoni
06/03/24, 10:30 - 13:00 Aula Dal Passo
07/03/24, 14:00 - 16:30 Aula D'Antoni
13/03/24, 10:30 - 13:00 Aula Dal Passo
14/03/24, 14:00 - 16:30 Aula D'Antoni
20/03/24, 10:30 - 13:00 Aula Dal Passo
21/03/24, 14:00 - 16:30 Aula D'Antoni
26/03/24, 14:00 - 16:30 Aula Dal Passo
Organizing Committee:
Carla Manni (Contact Mail)
Further Information: Click here for Phd Course Page
Streaming Link (MS Teams): This seminar will be held in person