Notiziario Scientifico
a cura del Dipartimento di Matematica G. Castelnuovo, Sapienza Università di Roma
Settimana dal 04-05-2020 al 10-05-2020
Lunedì 04 maggio 2020
Ore 14:30, Streaming all'indirizzo meet.google.com/cby-ysjk-ryu, Dipartimento di Matematica, Sapienza Università di Roma
A.MA.CA. 2020, Analisi MAtematica a CAsa
Lucio Boccardo (Sapienza Università di Roma)
El amor a las PDE en los tiempos del coronavirus
http://www1.mat.uniroma1.it/ricerca/seminari/analisi-matematica/abstractBoccardo.pdf
Martedì 05 maggio 2020
Ore 16:00, teleconferenza , https://meet.google.com/pip-kvzt-fkz
Seminario delle Meccaniche
Roberto Livi (Universita` di Firenze)
Breather states in the Discrete Nonlinear Schrodinger Equation: dynamics and statistics
We illustrate the peculiar properties of the Discrete Nonlinear Schrodinger Equation, where breather dynamics characterizes "negative temperature" states, which naturally appear also in out-of-equilibrium stationary conditions. In an equilibrium perspective these peculiar states are usually interpreted as an effect of ergodicity breaking: we discuss that they can be more properly understood in terms of inequivalence between statistical ensembles.
Mercoledì 06 maggio 2020
Ore 14:00, Streaming all'indirizzo https://meet.google.com/vsz-nxkm-hav, Dipartimento di Matematica, Sapienza Università di Roma
Seminario di algebra e geometria
Marco Boggi (Departamento de Matematica, UFMG, Belo Horizonte.)
Automorphisms of procongruence mapping class groups
In this talk, I will discuss the automorphism group of the procongruence mapping class group and of the associated procongruence curve and pants complexes. In analogy with a classical result of Ivanov for mapping class groups, this allows to determine the group of automorphisms of the \emph{arithmetic} procongruence mapping class group which satisfy a natural geometric condition. It is a nontrivial fact that this condition holds in genus 0. Let \(M_{0,n}\) be the moduli space of \(n\)-labeled, genus \(0\) algebraic curves. It follows, in particular, that \(\mathrm{Out}(\pi_1^\mathrm{et}(M_{0,n}\times Q))\cong\Sigma_n\), for \(n\geq 5\). This talk is based on a joint work with Louis Funar and Pierre Lochak (cf. arXiv:2004.04135)
Per informazioni, rivolgersi a: giovanni.cerulliirelli@uniroma1.it
Giovedì 07 maggio 2020
Ore 14:00, Il seminario sarà tenuto in modalità telematica, Link per partecipare: https://meet.google.com/mpv-nitc-sed
Seminari di Ricerca in Didattica della Matematica
Francesca Morselli (Università di Genova)
La razionalità nel dimostrare: messa a punto di un costrutto teorico ed esperienze di networking
Venerdì 08 maggio 2020
Ore 14:30, Videoconference talk - visit the web-page http://www.mat.uniroma2.it/~ricerca/algebr/page-AREA_files/page-AREA-2_files/talks-2.html#08/05/2020 and click on the link that you find there, dipartimento di Matematica - Università di Roma "Tor Vergata"
ARTS - Algebra and Representation Theory Seminar
Andrea APPEL (Università di Parma)
Parabolic K-matrices for quantum groups
Braided module categories provide a conceptual framework for the reflection equation, mimicking the relation between the Yang-Baxter equation and braided categories. Indeed, while the latter describes braids on a plane (type A), the former can be thought of in terms of braids on a cylinder (type B). In the theory of quantum groups, natural examples of braided module categories arise from quantum symmetric pairs (coideal subalgebras quantizing certain fixed point Lie subalgebra), where the action of type B braid groups is given in terms of a so-called universal K-matrix, constructed in finite-type by Balagovic-Kolb. In this talk, I will describe the construction of a family of "parabolic” K-matrices for quantum Kac-Moody algebras, which is indexed by Dynkin subdiagrams of finite-type and includes Balagovic-Kolb K-matrix as a special case. If time permits, I will explain how this construction could lead to a meromorphic K-matrix for quantum loop algebras. This is based on joint works with D. Jordan and B. Vlaar. WARNING: the talk will be held in streaming, as a videoconference on-line; in order to join the videoconference, visit the web-page http://www.mat.uniroma2.it/~ricerca/algebr/page-AREA_files/page-AREA-2_files/talks-2.html#08/05/2020 and click on the link that you find there.
Per informazioni, rivolgersi a: gavarini@mat.uniroma2.it
Le comunicazioni relative a seminari da includere in questo notiziario devono pervenire esclusivamente
mediante apposita form da compilare online, entro le ore 24 del giovedì precedente la settimana
interessata. Le comunicazioni pervenute in ritardo saranno ignorate.
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seminari@mat.uniroma1.it.
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