Tee-Seminar der AG KramerZeit und Ort:
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Inhalt:
Mitglieder der Arbeitsgruppe und Gäste tragen über ihre laufenden Forschungsarbeiten vor, oder über Themen, die uns interessieren. Vor dem Seminar (ab 10:00) gibt es in Zimmer 301b Tee.
Vorträge:
8.4.14 Cora Welsch (Braunschweig) Höhere Erzeugung von Gruppen durch Untergruppen
15.4.14 Alina Vdovina (Newcastle/Bonn) Cocompact actions on buildings and their applications
29.4.14 Linus Kramer (Münster) Finitely generated quotients of Lie groups
20.5.14
Rupert McCallum (Münster) Free Subgroups of Special Linear Groups
Abstract: We will explore some sufficient conditions on an element g of SL(n,k) of infinite order for it to be the case that the set of all h in SL(n,k) such that g and h generate a free group of rank two is a Zariski dense subset of SL(n,k).
03.06.14
Antoine Beljean (Münster) A Leray-Serre Spectral Sequence for Eucliean Buildings
24.6.14
Linus Kramer (Münster) Normal subgroups of infinite products of simple groups
Abstract: I will explain how the Cech-Stone compactification of the index set of an infinite product of
simple groups detects normal subgroups.
01.07.14
Daniel Skodlerack (Norwich) The trace map between Witt groups
16.7.14 10H30-11H30, Room SR0
Rupert McCallum (Münster) Topological Rigidity of Closed Weyl Transitive Groups of Automorphisms of a Bruhat-Tits tree
Abstract: We shall present an outline of a proof that a closed Weyl transitive group of automorphisms of a Bruhat-Tits tree is topologically rigid in the sense of admitting exactly one locally compact sigma-compact Hausdorff topology compatible with the group operations.