Bollettino settimanale
Settimana 24/10/2022 - 28/710/2022
Seminari
Università Roma Tre
Dipartimento di Matematica e Fisica
Laboratorio di Crittografia e Cybersecurity
Date: 24 October 2022
Schedule: 9:00 - 13:10 Rome Time
Where: Conference Room Urbano VIII, Argiletum - Roma Tre University - Via della Madonna dei Monti, 40
Speaker:
Massimiliano Sala
Christian Mouchet
Daniele Friolo
Dario Pasquini
Sinem Sav
Title: " Privacy preserving systems, software and tools "
Abstract/Program:
Organizing Committee:
Università Roma Tre
Laboratorio di Crittografia e Cybersecurity
Dipartimento di Matematica e Fisica
Further Information: Click here
Streaming Link (MS Teams): Web connection to conference
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
Geometry Seminar
Date: 25 October 2022
Schedule: 14:30 Rome Time
Where: Conference Room 1201 "Roberta Dal Passo"
Speaker: Francesca Carocci (EPFL)
Title: " Smooth compactifications of moduli of low genus curves in projective spaces via log geometry and Gorenstein singularities "
Abstract:
Moduli spaces of stable maps in higher genus have many components of different dimensions meeting each other in complicated ways, and the closure of the smooth locus
(the so called main component) does not have a modular interpretation.
Constructing modular desingularisations of the main component is strictly related to understanding degenerations of canonical divisors and Gorenstein singularities.
I will explain how logarithmic and tropical techniques can be used to solve the problem in genus one and two and say a few words on how the methods used can be adapted
to construct modular binational models of pointed curves in low genus.
This is based on a joint work with L. Battistella.
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 Roma Tor Vergata
Dipartimento di Matematica
Operator Algebra Seminar
Date: 28 October 2022
Schedule: 11:30 Rome Time
Where: Conference Room 1201 "Roberta Dal Passo"
Speaker: Fabio Cipriani (Politecnico di Milano)
Title: " Spectral triples, Dirichlet spaces, and discrete groups."
Abstract:
We study natural conditions on extended spectral triples $(A,h,D)$ by which the quantum differentials $da$ of
elements $a \in A$, belong to the ideal generated by the line element $ds = D^{-1}$. We also study upper and
lower bounds on the singular values of the $da$'s to form a conformally invariant energy functional. We apply
the general framework to study natural spectral triples of Dirichlet spaces and in particular those on duals
of discrete groups arising on negative definite functions.
Organizing Committee:
Roberto Longo (University of Rome Tor Vergata and Director of C.M.T.P.)
Vincenzo Morinelli (University of Rome Tor Vergata)
Daniele Guido (University of Rome Tor Vergata)
Further Information: Click here for website
NOTE: For more information contact: Vincenzo Morinelli
Streaming Link (MS Teams): This seminar will be held in person
Università degli Studi Roma Tor Vergata
Dipartimento di Matematica
DIFFERENTIAL EQUATIONS SEMINAR
Date: 25 October 2022
Schedule: 16:00 - Rome Time
Where: Conference Room "R. Dal Passo"
Title: " Long time NLS approximation for a quasilinear Klein-gordon equation on large compact domains "
Speaker: Roberto Feola (Università di Roma Tre)
Abstract: We consider a class of Klein-Gordon equations with quasilinear, Hamiltonian and quadratic nonlinearities posed on a large box with periodic boundary conditions.
We discuss how the cubic NLS equation can be derived to describe, approximately, the evolution of slow modulations in time and space of a spatially and temporarily oscillating wave packet.
We show that the approximation is valid over a time scale which goes beyond the natural quadratic lifespan of solutions of cubic equations. We provide error estimates in Sobolev spaces.
The proof is based on a combination of normal form techniques and energy methods.
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
Eventi