Prossimi seminari del Dipartimento di Matematica


23
Set

Lunedì
Frédéric BAYART
On the interpolation of Hardy spaces of Dirichlet series

seminario di analisi matematica

 ore 14:50
 presso Sede INdAM, Roma
In this talk, we will prove that, for the usual methodsof interpolation, the interpolated space between two Hardy spaces ofDirichlet series is not the Hardy space of Dirichlet series we wouldexpect (based on a joint work with M. Mastylo).

24
Set

Martedì
Alessandro Carotenuto
Differential calculus for Jordan algebras and Jordan modules
 ore 20:00
 presso - Aula Da Stabilire -
Abstract: "The notion of differential calculus for Jordan algebras, as well as the theory of connections for Jordan modules, was recentely introduced by M. Dubois-Violete. In this talk I will give an overview of the representation theory for Jordan algebras and then I will present some results we obteined in the context of differential calculus for Jordan algebras and modules. If the time allows, I will also review two proposals from M. Dubois-Violette in which the use of Jordan algebra allows for a mathematical formalization of the Standard model of particle physics"

25
Set

Mercoledì
Artur NICOLAU
Distortion and Distribution of Sets under Inner Functions

seminario di analisi matematica

 ore 09:30
 presso Sede INdAM di Roma
Distortion and distribution of sets under inner functions. It is a classical result that Lebesgue measure on the unit circle is invariant under inner functions xing the origin and in this setting, the distortion of Hausdor contents has also been studied by Fernández and Pestana. similar results focusing on inner functions with xed points on the unit circle. We will present In particular, our results yield information not only on the size of preimages of sets under inner functions, but also on their distribution with respect to a given boundary point. Join work with Matteo Levi and Oí Soler iGibert.

25
Set

Mercoledì
Xavier Tolsa
The two-phase problem for harmonic measure in VMO

seminario di analisi matematica

 ore 11:30
 presso Sede INdAM di Roma
We consider the two-phase problem for harmonic measure in VMO.

26
Set

Giovedì
N. Saintier
Measure-valued Solutions for Some Problems Arising in Biology and Social Sciences

seminario di analisi matematica

 ore 11:00
 presso Seminario I
In this talk I will present some results concerning the well-posedness and asymptotic behaviour of some evolution equations arising in social sciences naturally involving measure-valued functions. More precisely I will present some models of opinion formation. Imagine a group of individuals debating over some question. As a result of interactions among individuals, the distribution of opinion, a priori a general probability measure, is not static but evolves in time. The problem is then to study the long-time behaviour of this distibution assuming some knowledge about the way people interact. This amounts to study the aymptotic behaviour of some transport equation for measure-valued function. We obtain the asymptotic behaviour of the solution and an estimation of the rate of convergence in terms of a Monge-Kantorovich distance.

26
Set

Giovedì
N. Saintier
Measure-valued Solutions for Some Problems Arising in Biology and Social Sciences

seminario di analisi matematica

 ore 11:00
 presso Seminario I
In this talk I will present some results concerning the well-posedness and asymptotic behaviour of some evolution equations arising in social sciences naturally involving measure-valued functions. More precisely I will present some models of opinion formation. Imagine a group of individuals debating over some question. As a result of interactions among individuals, the distribution of opinion, a priori a general probability measure, is not static but evolves in time. The problem is then to study the long-time behaviour of this distibution assuming some knowledge about the way people interact. This amounts to study the aymptotic behaviour of some transport equation for measure-valued function. We obtain the asymptotic behaviour of the solution and an estimation of the rate of convergence in terms of a Monge-Kantorovich distance.

26
Set

Giovedì
Kristian Seip
TBA

seminario di analisi matematica

 ore 12:20
 presso Sede INdAM di Roma

27
Set

Venerdì
Karlheinz GRÖCHENIG
Sampling, Marcinkiewicz-Zygmund sets, approximation, and quadrature rules

seminario di analisi matematica

 ore 10:20
 presso Sede INdAM di Roma
Suppose you are given n samples of a function f on the torus: what can you say on f?

01
Ott

Martedì
Eleonora Anna Romano
RISULTATI RECENTI DI FANO 4-FOLDS TRAMITE CONIC BUNDLES

nel ciclo di seminari: SEMINARIO DI ALGEBRA E GEOMETRIA

seminario di algebra e geometria

 ore 11:00
 presso Seminario II
In questo talk presenteremo alcuni risultati recenti riguardanti Fano 4-folds, usando particolari strutture di conic bundles che tali varietà ammettono. Nella prima parte del talk ci focalizzeremo su alcuni oggetti geometrici preliminari che ci serviranno per discutere i risultati principali. In particolare, richiameremo un invariante per tali varietà, introdotto da Casagrande, chiamato Lefschetz defect. Rivisiteremo la letteratura esistente nel caso in cui tale invariante sia maggiore o uguale a quattro e discuteremo il legame che sussiste tra il Lefschetz defect e le strutture di conic bundles delle varietà in questione. Successivamente daremo una caratterizzazione delle Fano 4-folds con Lefschetz defect uguale a 3 in termini di strutture di conic bundles da cui dedurremo risultati di classificazione per tali varietà.

01
Ott

Martedì
Giovanni Paolini
The K(pi, 1) conjecture for affine Artin groups

seminario di algebra e geometria

 ore 14:00
 presso - Aula Da Stabilire -
Artin groups are a generalization of braid groups, and arise as the fundamental groups of configuration spaces associated with Coxeter groups. A long-standing open problem, called the K(pi, 1) conjecture, states that the higher homotopy groups of these configuration spaces are trivial. For finite Coxeter groups, this was proved by Deligne in 1972. In this talk I will present a recent proof of the K(pi, 1) conjecture in the affine case, which is a joint work with Mario Salvetti. The first part of the talk will be dedicated to introducing Coxeter groups, Artin groups, and the K(pi, 1) conjecture, so that only few topological and combinatorial prerequisites are needed.

06
Ott

Domenica
XX
come si cancella un seminario?
 ore 20:00
 presso - Aula Da Stabilire -
TBA

07
Ott

Lunedì
Elvira Barbera
Stationary flow and heat transfer in extended thermodynamics

seminario di fisica matematica

 ore 12:00
 presso Aula Seminario via Saragozza,8
Recently, in extended thermodynamics, attention was devoted to stationary flows and stationary heat transfer problems in bounded domains. It was shown that even the 13-moment extended thermodynamics model is able to predict results different from those predicted by Navier-Stokes-Fourier thermodynamics and closer to experimental data. The differences are more evident when non-planar geometries and/or velocity fields are present. Here general results and future perspectives will be presented.

10
Ott

Giovedì
Elvira Barbera
A comparison between kinetic theory and extended thermodynamics models of a monatomic gas mixture

seminario di fisica matematica

 ore 12:00
 presso Aula Seminario via Saragozza,8
The models of extended thermodynamics can be constructed through different approaches. In this talk we will compare them in the case of a monatomic rarefied gas mixture.

12
Ott

Sabato
Giuseppe Anichini
Matematica e Fisica: fake news...anche ad insaputa

seminario interdisciplinare

 ore 09:00
 presso Aula D - Complesso Berti Pichat
Il termine fake news indica informazioni inventate, ingannevoli o distorte. Tradizionalmente esse vengono veicolate attraverso i mass media ai quali si è, oggi e con forte impatto, aggiunto Internet, essenzialmente attraverso i social. Le fake news concernenti le discipline scientifiche sono quelle che colpiscono i soggetti meno colti della popolazione. Paradossalmente sono anche le più... involontarie a causa della generale “ignoranza” delle cose della matematica da parte di chi detiene molto del potere mediatico. Involontarie ma non meno “pericolose".

12
Ott

Sabato
Giuseppe Anichini
Matematica e Fisica: fake news...anche ad insaputa

seminario interdisciplinare

 ore 09:00
 presso Aula D - Complesso Berti Pichat
Il termine fake news indica informazioni inventate, ingannevoli o distorte. Tradizionalmente esse vengono veicolate attraverso i mass media ai quali si è, oggi e con forte impatto, aggiunto Internet, essenzialmente attraverso i social. Le fake news concernenti le discipline scientifiche sono quelle che colpiscono i soggetti meno colti della popolazione. Paradossalmente sono anche le più... involontarie a causa della generale “ignoranza” delle cose della matematica da parte di chi detiene molto del potere mediatico. Involontarie ma non meno “pericolose". Il seminario rientra nell'incontro "La cultura scientifica contro le fake news", organizzato insieme a tutte le aree del PLS. Ogni relatore avrà a disposizione 30 minuti, poi dovrà rispondere alle domande degli studenti.