Past Kinderseminar

24 October 2012
11:00
John Mackay -- St Hugh's, 80WR18
Abstract
• Kinderseminar
17 October 2012
11:00
Alejandra Garrido Angulo -- St Hugh's, 80WR18
Abstract

I will give a brief report on some the topics discussed at the workshop "Golod-Shafarevich groups and rank gradient" that took place this August in Vienna. I will focus on results involving rank gradient.

• Kinderseminar
23 May 2012
11:30
Dawid Kielak
Abstract
• Kinderseminar
16 May 2012
11:30
Martin Bridson
Abstract
• Kinderseminar
7 March 2012
11:30
Elisabeth Fink
Abstract
• Kinderseminar
22 February 2012
11:30
$\Pi$eter Neumann
Abstract
• Kinderseminar
15 February 2012
(All day)
Jason Semeraro
Abstract
Saturated fusion systems are a relatively new class of objects that are often described as the correct 'axiomatisation' of certain p-local phenomena in algebraic topology. Despite these geometric beginnings however, their structure is sufficiently rigid to afford its own local theory which in some sense mimics the local theory of finite groups. In this talk, I will briefly motivate the definition of a saturated fusion system and discuss a remarkable result of Michael Aschbacher which proves that centralisers of normal subsystems of a saturated fusion system, F, exist and are themselves saturated. I will then attempt to justify his definition in the case where F is non-exotic by appealing to some classical group theoretic results. If time permits I will speculate about a topological characterisation of the centraliser as the set of homotopy fixed points of a certain action on the classifying space of F.
• Kinderseminar
8 February 2012
11:30
Tom Sutherland
Abstract
• Kinderseminar
25 January 2012
11:30
Peter Kropholler
Abstract
• Kinderseminar
18 January 2012
11:30
Peter Pappas
Abstract
<p><span>I will present a history of the problem, relate it to other conjectures, and, with time permitting, indicate recent developments. The focus will primarily be group-theoretic and intended for the non-specialist.</span></p>
• Kinderseminar