Seminar series
Date
Tue, 14 Jun 2022
Time
14:00 - 15:00
Location
L6
Speaker
Scott Harper
Organisation
Bristol

By a classical theorem of Jordan, every faithful transitive action of a nontrivial finite group admits a derangement (an element with no fixed points). More recently, the existence of derangements with additional properties has attracted much attention, especially for primitive actions of almost simple groups. Surprisingly, there exist almost simple groups with elements that are derangements in every faithful primitive action; we say that these elements are totally deranged. I'll talk about ongoing work to classify the totally deranged elements of almost simple groups, and I'll mention how this solves a question of Garzoni about invariable generating sets for simple groups.

Please contact us with feedback and comments about this page. Last updated on 01 Jun 2022 16:58.