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Pagina d'informazione di seminari ed eventi scientifici che avranno luogo settimanalmente per lo più in area romana. Per la pubblicazione rivolgersi a Giorgio Chiarati che ne cura la gestione. Per consultare la pagina di tutti i seminari di Dipartimento Click here.

 

Settimana 22/05/2022 - 26/05/2022

 

 

Seminari

Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica

 


Mathematical Physics Seminar

Date: 23 may 2023
Schedule: 14:30 Rome Time
Where: Conference Room 1201 " R. Dal Passo "
Speaker: Piotr Oprocha (AGH University of Krakow)
Title: " On invariant sets with vanishing derivative and Cantor set dynamics (joint work with Silvere Gangloff)* "

Abstract: Combinatorial graphs can serve as a nice tool for description of dynamical systems on Cantor set. A classical example of this type are Bratelli- Vershik diagrams. Recently, Shimomura, motivated by works of Akin, Glasner and Weiss, developed an alternative approach, which helps to describe dynamical systems on Cantor set by employing inverse limit of graphs. This approach provides a useful tool for description of dynamical systems on Cantor set. As a particular application of the above approach we will present a method of construction of Cantor set $C$ with prescribed dynamics and its extension to interval maps with derivative zero on $C$. Starting motivation for this study is an old question whether invariant subset $C\subset [0,1]$ on which derivative of interval map $f$ vanishes must contain a periodic point. *

Organizing Committee:
Dynamical systems - Oliver J. Butterley (Contact Mail)

Further Information:
Click here for Butterley's webpage
Click here for Oprocha 's webpage

NOTE: For more information contact: Butterley Click here for mail

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: 24.05.2023
Schedule: 14:00 - Rome Time
Where: Conference Room " 2001 "
Title: " A new correlation inequality for Ising models with external fields "
Speaker: Rongfeng Sun (NUS, Singapore)

Abstract: MWe study ferromagnetic Ising models on finite graphs with an inhomogeneous external field. We show that the influence of boundary conditions on any given spin is maximised when the external field is identically 0. One corollary is that spin-spin correlation is maximised when the external field vanishes. In particular, the random field Ising model on Z^d, d ≥ 3, exhibits exponential decay of correlations in the entire high temperature regime of the pure Ising model. Another corollary is that the pure Ising model on Z^d, d ≥ 3, satisfies the conjectured strong spatial mixing property in the entire high temperature regime. Based on joint work with Jian Ding and Jian Song.
Nota: Questo seminario fa parte delle attività finanziate dal progetto MIUR Dipartimento d'eccellenza MATH@TOV CUP E83C18000100006

Organizing Committee:
Domenico Marinucci (coordinator)
Michele Salvi
Stefano Vigogna

Further Info and Program: Click here for RoMaDS event Page
Streaming Link (MS Teams): Link to Teams streaming will be published soon; Link MS Teams This seminar will be held in mix mode: person and streaming web

Università degli Studi Roma Tor Vergata
Dipartimento di Matematica

 


Topology Seminar

Date: 24.05.2023
Schedule: 14:00 - Rome Time
Where: Conference Room 1101 " D'Antoni "
Title: " Homology of configuration spaces of surfaces modulo an odd prime "
Speaker: Andrea Bianchi (Università di Copenhagen)

Abstract: This is joint work with Andreas Stavrou. For a compact orientable surface S of genus g with one boundary component and for an odd prime number p, we study the homology of the unordered configuration spaces C(S):= coprod_{n>=0} C_n(S) with coefficients in F_p. We describe H_*(C(S); F_p) as a bigraded module over the Pontryagin ring H_*(C(D); F_p), where D is a disc, and give a splitting as direct sum of certain well-behaved quotients of this ring. We also consider the action of the mapping class group Mod(S) on the homology, and identify the kernel of the action with the subgroup of Mod(S) generated by separating Dehn twists and p-th powers of Dehn twists.

Organizing Committee:
Paolo Salvatore
Further Info and Program: Click here for Topology Area Webpage
Streaming Link (MS Teams): Link to Teams streaming will be published soon; Link MS Teams This seminar will be held in person

Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica

 


Mathematical Physics Seminar

Date: 25 may 2023
Schedule: 16:00 Rome Time
Where: Conference Room 1201 " R. Dal Passo "
Speaker: Mark Demers (Fairfield)
Title: " Projective cones for dispersing billiards "

Abstract: We describe the recent construction of Birkhoff cones which are contracted by the action of transfer operators corresponding to dispersing billiard maps. The explicit contraction provided by this construction permits the study of statistical properties of a variety of sequential and open billiards. We will discuss some applications of this technique to chaotic scattering and the random Lorentz gas. This is joint work with C. Liverani.

Organizing Committee:
Dynamical systems - Oliver J. Butterley (Contact Mail)

Further Information: Click here for Butterley webpage
NOTE: For more information contact: Butterley 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

 

Algebra and Representation Theory Seminar

Date: Friday, 26 May 2023
Schedule: 14:30 Rome Time
Where: Conference Room 1201 “Roberta Dal Passo”
Speaker: Arun RAM (University of Melbourne)
Title: "Boson-Fermion correspondence for Macdonald polynomials"

Abstract: In its simplest form, this correspondence is the map from symmetric functions to skew-symmetric functions given by multiplication by the Weyl denominator (the Vandermonde determinant). A generalization produces the motivating shadow of “geometric Satake”, a diagram which contains the Satake isomorphism, the center of the affine Hecke algebra and the Casselman-Shalika formula. In a miracle that I wish I understood better, the whole diagram generalizes to the case of Macdonald polynomials and sends the bosonic Macdonald polynomial to the fermionic Macdonald polynomial. Does this suggest an “elliptic version" of geometric Langlands?
This talk is based upon arXiv2212.03312, joint with Laura Colmenarejo.
N.B.: partially supported by the MIUR Excellence Department Project MatMod@TOV awarded to the Department of Mathematics, University of Rome "Tor Vergata"

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, 26 May 2023
Schedule: 16:00 Rome Time
Where: Conference Room 1201 “Roberta Dal Passo”
Speaker: Gleb NENASHEV (Brandeis University)
Title: " Schubert Calculus and bosonic operators "

Abstract: In this talk I will present a new point of view on Schubert polynomials via bosonic operators. In particular, we extend the definition of bosonic operators from the case of Schur polynomials to Schubert polynomials. More precisely, we work with back-stable Schubert polynomials and our operators act on the left weak Bruhat order. Furthermore, these operators with an extra condition give sufficiently enough linear equations for the structure of the cohomology ring of flag varieties.

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


 

 

Università degli Studi di Roma "Tor Vergata"
Dipartimento di Matematica

PhD Course
Reading course on Birational Geometry


Period: 2023.10.01 - 2023.06.06
Schedule:

Day Time and Room
2023.10.01 h: 14:30/15:30 Conference Room 1103 "F.DE Blasi"
2023.17.01 h: 11:00/13:00 Conference Room 1103 "F.DE Blasi"
2023.24.01 h: 11:00/13:00 Conference Room 1103 "F.DE Blasi"
2023.31.01 h: 11:00/13:00 Conference Room 1103 "F.DE Blasi"
2023.17.02 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.07.02 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.14.02 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.21.02 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.28.02 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.07.03 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.14.03 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.21.03 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.28.03 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.04.04 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.11.04 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.18.04 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.02.05 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.09.05 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.16.05 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.23.05 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.30.05 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"
2023.06.06 h: 11:00/13:00 Conference Room 1103 "R.Dal Passo"

Organizing Committee:
Codogni Giulio (Contact Mail)
Rapagnetta Antonio (Contact Mail)

Further Information: Click here for Geometry Webpage - and - Reading course on Birational Geometry Page




 

 

 

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