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Ci-dessous, les différences entre deux révisions de la page.

--- mega:seminaire [2019/01/07 13:54] – titre et résum Bourgade male
+++ mega:seminaire [2019/01/22 14:03] – [Prochaine séance] male
@@ Ligne 18: / Ligne 18: @@
 {{ :mega:20141121_153039.jpg?400 |}}
 ===== Prochaine séance =====
-     * Vendredi **11 Janvier, salle 01**
+ * 10h30-12h00: mini cours par **[[https://www.math.u-psud.fr/~emaurel/|Édouard Maurel-Segala]]**  // //\\
-         * 10h30-12h00: mini cours par **[[https://math.nyu.edu/~bourgade/|Paul Bourgade]]** //Équations de boucles et champs log-corrélés.// Les équations de boucles permettent de comprendre l'émergence de champs gaussiens en matrices aléatoires. Dans deux exemples concrets, je prouverai:  le théorème de Szegö fort pour les matrices unitaires ; les moments du polynôme caractéristique de matrices de Ginibre.\\
+         * 14h00-15h00: **[[https://sites.google.com/view/franck-gabriel-en/home|Franck Gabriel]]** ////\\
-         * 14h00-15h00: **[[http://google.com/search?q=Slim+Kammoun+math|Slim Kammoun]]** //Universality for random permutations.//  It is known from the work of Baik, Deift and Johansson (1999)  that we have the Tracy-Widom fluctuations for the longest increasing subsequence of uniform permutations. We prove that this result holds also in the case of the Ewens distribution and more generally for a class of random permutations with distribution invariant under conjugation. Moreover, we obtain the convergence of the first components of the associated Young tableaux to the Airy Ensemble as well as the global convergence to the Vershik-Kerov-Logan-Shepp shape. The talk will be boxed on the paper //Monotonous subsequences and the descent process of invariant random permutations//.\\
+         * 15h00-16h30: **[[https://www.math.uni-sb.de/ag/speicher/weber.html|Moritz Weber]]** //Quantum symmetries of finite graphs and of noncommutative notions of independence//\\
-         * 15h30-16h30:  **[[https://people.kth.se/~holcomb/|Diane Holcomb]]**  // //\\
+     * Vendredi **8 Février, salle 201**
+         * 10h30-12h00: mini cours par **[[https://www.math.u-psud.fr/~emaurel/|Édouard Maurel-Segala]]**  // //\\
+         * 14h00-15h00: **[[https://sites.google.com/view/franck-gabriel-en/home|Franck Gabriel]]** ////\\
+         * 15h30-16h30: **[[https://www.math.uni-sb.de/ag/speicher/weber.html|Moritz Weber]]** //Quantum symmetries of finite graphs and of noncommutative notions of independence//In mathematics, symmetries are usually modeled by groups; in modern theories however, we sometimes need to go beyond groups in order to capture symmetry: We need quantum groups. In this talk, I will briefly motivate and introduce the concept of compact matrix quantum groups by Woronowicz from the 1980's based on C*-algebras. I will then focus on two aspects. Firstly, I will  survey recent developments in the theory of quantum automorphism groups of graphs. This is a very young but promising field initiated by Bichon and Banica about fifteen years ago. Together with my PhD student Simon Schmidt, we showed that the quantum symmetry group of a graph C*-algebra is exactly the quantum automorphism group of the graph, hence the graph C*-algebra preserves the quantum symmetries of the underlying graph. A second focus of my talk will be on distributional symmetries for noncommutative independence concepts such as Voiculescu's free independence, Boolean independence or bi-free independence. For all these notions, we have a de Finetti type theorem characterizing iid sequences by distributional symmetries. The technical details of the talk will be mostly algebraic and no knowledge on C*-algebras or quantum groups is assumed.\\
 ===== Calendrier 2018-2019 =====
      * Vendredi **12 Octobre**, salle 201
@@ Ligne 33: / Ligne 38: @@
          * 15h30-16h30: **[[http://igor-kortchemski.perso.math.cnrs.fr/|Igor Kortchemski]]** //The geometry of random minimal factorizations of a long cycle//\\
      * Vendredi **11 Janvier**,  salle 01
-         * 10h30-12h00: mini cours par **[[https://math.nyu.edu/~bourgade/|Paul Bourgade]]** ////\\
+         * 10h30-12h00: mini cours par **[[https://math.nyu.edu/~bourgade/|Paul Bourgade]]** //Équations de boucles et champs log-corrélés//\\
          * 14h00-15h00: **[[http://google.com/search?q=Slim+Kammoun+math|Slim Kammoun]]** //Universality for random permutations//\\
-         * 15h30-16h30:  **[[https://people.kth.se/~holcomb/|Diane Holcomb]]**  // //\\
+         * 15h30-16h30:  **[[https://people.kth.se/~holcomb/|Diane Holcomb]]**  //On the centered maximum of the Sine beta process//\\
      * Vendredi **8 Février**,  salle 201
          * 10h30-12h00: mini cours par **[[https://www.math.u-psud.fr/~emaurel/|Édouard Maurel-Segala]]**  // //\\
          * 14h00-15h00: **[[https://sites.google.com/view/franck-gabriel-en/home|Franck Gabriel]]** ////\\
-         * 15h00-16h30: **[[https://www.math.uni-sb.de/ag/speicher/weber.html|Moritz Weber]]** ////\\
+         * 15h30-16h30: **[[https://www.math.uni-sb.de/ag/speicher/weber.html|Moritz Weber]]** //Quantum symmetries of finite graphs and of noncommutative notions of independence//\\
      * Vendredi **15 Mars**  salle 421
          * mini cours par **[[https://www.di.ens.fr/~lelarge/|Marc Lelarge]]** ////\\
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 L'image tout en haut est tirée de [[https://www.mat.tuhh.de/forschung/aa/forschung.html]].