Bollettino settimanale
Settimana 07/11/2022 - 11/11/2022
Seminari
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
DIFFERENTIAL EQUATIONS SEMINAR
Date: 08 November 2022
Schedule: 16:00 - Rome Time
Where: Conference Room "R. Dal Passo"
Title: " Spectral actions for q-particles and their asymptotic "
Speaker: Francesco Fidaleo (Università di Roma "Tor Vergata")
Abstract: For spectral actions made of the average number of particles
and arising fromopen systems made of general free q-particles (including Bose, Fermi and classical ones
corresponding to q=\pm 1 and 0, respectively) in thermal equilibrium, we compute the asymptotic expansion
with respect to the natural cut-off. We treat both relevant situations relative to massless and massive particles,
where the natural cut-off is 1/\beta=k_\beta T and 1/\sqrt{\beta}, respectively. We show that the massless
situation enjoys less regularity properties than the massive one. We also consider the passage to the continuum
describing infinitely extended open systems in thermal equilibrium. We briefly discuss the appearance of condensation
phenomena occurring for Bose-like q-particles, for which q\in(0,1], after passing to the continuum. We also compare
the arising results for the finite volume situation (discrete spectrum) with the corresponding infinite volume one (continuous spectrum).
Nota: Questo seminario fa parte delle attività finanziate dal progetto MIUR Dipartimento d'eccellenza MATH@TOV CUP E83C18000100006
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
Geometry Seminar
Date: 08 November 2022
Schedule: 14:30 Rome Time
Where: Conference Room 1201 "Roberta Dal Passo"
Speaker: Andrea Petracci (Università di Bologna)
Title: " Toric geometry and K-moduli of Fano varieties "
Abstract: Roughly speaking, Fano varieties are the algebraic varieties with positive curvature. Very recently K-stability (i.e.
the existence of Kähler-Einstein metrics) has been applied to construct moduli spaces of Fano varieties, called K-moduli.
Toric varieties are very special algebraic varieties which are constructed in a combinatorial flavour,
starting from discrete objects such as polytopes.
In this talk, I would like to explain a couple of applications of the deformation
theory of toric Fano varieties to the study of K-moduli spaces of Fano varieties:
a) K-moduli spaces of Fano varieties can be quite singular; b) (joint work with H.Abban, I.Cheltsov, A.Kasprzyk) the K-moduli space of
quartic 3-folds contains points corresponding to K-polystable varieties which are not quartic 3-folds.
Organizing Committee:
Codogni Giulio (Contact Mail)
Lido Guido Maria ( Contact Mail)
Onorati Claudio ( Contact Mail)
Further Information: Click here for geometry webpage
NOTE: For more information contact: Onorati Claudio Click here for mail
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
RoMaDS - Rome Center on Mathematics for Modeling and Data ScienceS
Date: 9nd November 2022
Schedule: 14:00 Rome Time
Where: Conference Room Roberta Dal Passo
Speaker: Alessandra Cipriani (U.C.L., London)
Title: " Topological data analysis: vineyards for metallic structures "
Abstract/Program:
Modeling microstructures is a problem that interests material science as well as mathematics. The most basic model for steel microstructure is the Poisson-Voronoi diagram.
It has mathematically attractive properties and has been used in the approximation of single-phase steel microstructures.
We would like to present methods that can be used to assess whether a real microstructure can be approximated by such a model.
In this talk, we construct tests that use data coming from serial sectioning (multiple 2D sections) of a 3D metallic structure.
The proposed statistics exploit tools from topological data analysis such as persistence diagrams and (a modified version of)
persistence vineyards.
The seminar is part of the Excellence Project Math@TOV.
Organizing Committee:
Domenico Marinucci (Coordinator)
Filippo Bracci
Piermarco Cannarsa
Lucia Caramellino
Andrea Clementi
Giorgio Gambosi
Carla Manni
Michele Salvi
Benedetto Scoppola
Alfonso Sorrentino
Hendrik Speleers
Stefano Vigogna
Nicola Vittorio
Further Information: You can find a schedule with the next events at the following link: Click here
Streaming Link (MS Teams): We encourage in-person partecipation. Should you be unable to come here is the link to the event with MICROSOFT TEAMS Click Here
Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica
Algebra and Representation Theory Seminar
Date: Friday November 11th, 2022
Schedule: 14:30 Rome Time
Where: Conference Room 1201 “Roberta Dal Passo”
Speaker: Azzurra CILIBERTI ( “Sapienza” Università di Roma )
Title: " Categorification of skew-symmetrizable cluster algebras through symmetric quivers "
Abstract:
I will present my attempt to categorify cluster algebras of type B and C using the the-ory of symmetric quivers in the sense of Derksen and Weyman.
Organizing Committee: Fabio Gavarini (mail to) - Martina Lanini (mail to)
Further Info: 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 November 11th, 2022
Schedule: 16:00 Rome Time
Where: Conference Room 1201 “Roberta Dal Passo”
Speaker: Sabino DI TRANI ( Università di Trento )
Title: " Smoothness Criteria for T-Fixed Points in Flat Linear Degenerations of the Flag Variety "
Abstract:
Linear Degenerations of the Flag Variety arise as very natural generalizations of the Complete Flag Variety and their geometrical properties very often appear to be linked with interesting combinatorial patterns. The talk will focus on a special class of linear degenerations, the Flat Degenerations, that have the remarkable property of being equidimensional algebraic varieties of the same dimension as the Complete Flag Variety. In some very recent works of M. Lanini and A. Pütz it is proved that Linear Degenerations of the Flag Variety can be endowed with a structure of GKM variety, under the action of a suitable algebraic torus T. The aim of the talk is to show how GKM Theory can be applied in this setting to prove some new results about the smooth locus in Flat Degenerations, generalizing a smoothness criterion proved by G.Cerulli Irelli, E. Feigin and M.Reineke for Feigin Degeneration. Finally, we provide a different combinatorial criterion, linking the smoothness property of a T-fixed point to the complete graph and to its orientations.
Organizing Committee: Fabio Gavarini (mail to) - Martina Lanini (mail to)
Further Info: Click here
Streaming Link (MS Teams): This seminar will be held in person
Eventi