Hosting en Venezuela

# Barcelona Algebraic Topology Group

Barcelona Algebraic Topology Group
 Thomas Poguntke Memorial Workshop
 Written by Natàlia Castellana Vila Wednesday, 30 January 2019 20:56 Thomas Poguntke passed away on September 24, 2018, after a serious illness, just a few weeks after arriving in Barcelona. He was 28 years old and about to hand in his PhD thesis (University of Bonn) on higher Segal spaces, K-theory and Hall algebras. This workshop is dedicated to his memory and to his mathematics, which will live on.31 January-1 February, 2019, CRM Speakers: Tobias DyckerhoffImma Gálvez-CarrilloGustavo JassoJoachim KockMark PenneyClaudia ScheimbauerWalker SternTashi WaldeMathew Young See http://mat.uab.cat/~kock/TPMW.html for more information. Last Updated on Wednesday, 30 January 2019 21:09

 Friday's Topology Seminar 2018-19
 Written by Natàlia Castellana Vila Friday, 30 November 2018 14:12 Speaker: Jesper Moller (University of Copenhagen)Title: Counting p-singular elements in finite groups of Lie typePlace: Room Seminar C3bDate: Friday January 25, 12h-13h Abstract: Let $G$ be a finite group and $p$ a prime number. We say that an element of $G$ is $p$-singular of its order is a power of $p$. Let $G_p$ be the {\em set\/} of $p$-singular elements in $G$, i.e. the union of the Sylow $p$-subgroups of $G$. In 1907, or even earlier, Frobenius proved that $|G|_p \mid |G_p|$: The number of $p$-singular elements in $G$ is divisible by the $p$-part of the order of $G$. The number of $p$-singular elements in a symmetric group is known. In this talk we discuss the number of $p$-singular elements in a finite (untwisted) group of Lie type in characteristic $p$.The situation in the cross-characteristic case will maybe also be considered. See the calendar for upcoming events. Last Updated on Tuesday, 22 January 2019 10:56 Read more...

 Presentation