| 21/05/21 | Seminario | 15:00 | 16:00 | | Sachin GAUTAM | Ohio State University |
Online / Algebra & Representation Theory Seminar (O/ARTS)
"R-matrices and Yangians"
- in streaming mode -
(see the instructions in the abstract)
An R-matrix is a solution to the Yang-Baxter equation (YBE), a central object in Statistical Mechanics, discovered in 1970's. The R-matrix also features prominently in the theory of quantum groups formulated in the eighties. In recent years, many areas of mathematics and physics have found methods to construct R-matrices and solve the associated integrable system.
In this talk I will present one such method, which produces meromorphic solutions to (YBE) starting from the representation theory of a family of quantum groups called Yangians. Our techniques give (i) a constructive proof of the existence of the universal R-matrix of Yangians, which was obtained via cohomological methods by Drinfeld in 1983, and (ii) prove that Drinfeld's universal R-matrix is analytically well behaved.
This talk is based on joint works with Valerio Toledano Laredo and Curtis Wendlandt.
N.B.: please click HERE to attend the talk in streaming
|
| 20/05/21 | Seminario | 16:00 | 17:00 | | Umberto Zannier | Scuola Normale Superiore di Pisa |
DinAmicI: Another Internet Seminar (DAI Seminar)
”Torsion values of sections, elliptical billiards and
diophantine problems in dynamics”
- in streaming mode -
(see the instructions in the abstract)
After a very brief review of basics on elliptic curves and their families, we shall consider "sections" of such families, and especially their "torsion values". For instance, what can be said of the complex numbers b for which (2, sqrt{2(2-b)}) is torsion on the Legendre curve y^2=x(x-1)(x-b)? In particular, we shall recall results of "Manin-Mumford type" and focus to illustrate some applications to elliptical billiards. Finally, if time allows we shall frame these issues as special cases of a general question in arithmetic dynamics, which can be treated with different methods, depending on the context. (Most results refer to work with Pietro Corvaja and David Masser.)
Note:
The zoom link to the seminar will be posted on the DinAmicI website and on Mathseminars.org. Moreover, it will be also streamed live via the youtube DinAmicI channel.
|
| 20/05/21 | Seminario | 14:30 | 17:50 | Aula Gismondi | | | Workshop "Entropy and QFT"
h. 14:30 - 15:15 Daniela Cadamuro (University of Leipzig)
Relative entropy of coherent states on general CCR algebras
h. 15:30 - 16:15 Rainer Verch(University of Leipzig)
Temperature and entropy-area relation of quantum matter near spherically symmetric outer trapping horizons
h. 16:30-16:50 Tea break
h. 16:50 - 17:35 Marius Junge (University of Illinois)
Poissonization, boundary and relative entropy
- in streaming mode - conference
registration required.
NB:This workshop is part of the activity of the MIUR Excellence Department Project MATH@TOV CUP E83C18000100006
|
| 20/05/21 | Seminario | 14:00 | 15:00 | | Giovanni Molica Bisci | Università degli Studi di Urbino | Nonsmooth functionals in the Calculus of Variations
( MS Teams Link for the streaming )
Link to the abstract
NB: This talk is part of the activity of the MIUR Excellence Department Project MATH@TOV CUP E83C18000100006 |
| 19/05/21 | Seminario | 14:00 | 18:15 | | | | Workshop "Entropy and QFT"
h. 14:00 -14:10 Welcome
h. 14:10 - 14:55 Stefan Hollands (University of Leipzig)
State recovery
h. 15:10 - 15:55 Chris J. Fewster(University of York)
Quantum Energy Inequalities
h. 16:10-16:30 Tea break
h. 16:30 - 17:15 Thomas Faulkner (University of Illinois)
Some new results on reflected entropy
h. 17:30 - 18:15 Feng Xu (University of California, Riverside) Rigorous results about Relative entropy in QFT
- in streaming mode - conference
registration required.
NB:This workshop is part of the activity of the MIUR Excellence Department Project MATH@TOV CUP E83C18000100006
|
| 14/05/21 | Colloquium | 15:00 | 17:00 | | Maria Colombo | Swiss Federal Institute of Technology (Lausanne) | May 12: Celebrating Women in Mathematics in Rome
The Transport equation
(With an opening address by Roberta Fulci)
For more information about this event visit this
webpage (which contains also the link for the streaming of the event).
This is part of the international initiative
May 12: Celebrating women in Mathematics
Note:
This talk is part of the activity of the MIUR Department of Excellence Project MATH@TOV CUP E83C18000100006 |
| 13/05/21 | Seminario | 14:00 | 15:00 | | Simone Secchi | Università di Milano Bicocca | Concentration phenomena for the Schroedinger-Poisson system in R^2
( MS Teams Link for the streaming )
We present some recent results obtain in collaboration with Denis Bonheure (Bruxelles, Belgium) and Silvia Cingolani (Bari, Italy) about a semiclassical analysis for a planar Schroedinger-Poisson system with potential functions.
NB:This talk is part of the activity of the MIUR Excellence Department Project MATH@TOV CUP E83C18000100006
|
| 12/05/21 | Seminario | 16:00 | 17:00 | | Jacopo Bassi | Univ. Tor Vergata |
Amenability properties for SL(3,Z)
in streaming mode - link in the abstract
Motivated by analogies with the case of SL(2,Z), we introduce a method for the study of possible variants of the Akemann-Ostrand property for SL(3,Z). This is a joint work in progress with Florin Radulescu.
This talk is part of the activity of the MIUR Excellence Department
Project MATH@TOV CUP E83C18000100006.
MS Teams link
|
| 11/05/21 | Seminario | 16:30 | 18:00 | | Tommaso de Fernex | University of Utah (USA) | On rationality of complex algebraic varieties (online lecture series)
Inizio del ciclo di 12 ore di lezioni on-line (ZOOM) per il Dottorato di Ricerca. Il Ciclo di lezioni è organizzato dal proponente scientifico Prof. Flaminio Flamini nell'ambito dellle attività del PROGETTO DI ECCELLENZA MIUR 2018-2022 MATH@TOV (CUP E83C18000100006).
La cadenza delle lezioni e'
MARTEDI' E GIOVEDI' 16:30-18:00 da
11 Maggio 2021 a 03 Giugno 2021
Per ulteriori informazioni sul corso, visitare la pagina web di riferimento:
https://sites.google.com/view/on-rationality-of-cpx-alg-vars/
Abstract: Rationality has been a central topic in the field since the Luroth problem was formulated at the end of the 18th century. The only rational curve is the projective line, and Castelnuovo's criterion settles the two-dimensional case. However, determining which varieties are rational in higher dimensions can be a challenging problem. In these lectures, I will overview some of the history of the problem and focus on two aspects related to rationality: birational rigidity and deformations of rational varieties. We will prove Iskovskikh-Manin's theorem on quartic threefolds and its generalization to higher dimensions, and Kontsevich-Tschinkel's specialization result on rationality. Along the way, we will also review some classical theorems on surfaces such as Noether-Castelnuovo's factorization theorem of Cremona transformations and Segre and Manin's theorems on rationality of cubic surfaces over non-closed fields.
|
| 07/05/21 | Seminario | 15:00 | 16:00 | | Thorge JENSEN | (free lance) |
Online / Algebra & Representation Theory Seminar (O/ARTS)
"Cellularity of the p-Kazhdan-Lusztig basis for symmetric groups"
- in streaming mode -
(see the instructions in the abstract)
After recalling the most important results about Kazhdan-Lusztig cells for symmetric groups, I will introduce the p-Kazhdan-Lusztig basis and give a complete description of p-cells for symmetric groups. After that I will mention important consequences of the Perron-Frobenius theorem for p-cells which provide one of the last missing ingredients for the proof of the cellularity of the p-Kazhdan-Lusztig basis in finite type A.
N.B.: please click HERE to attend the talk in streaming |