Stefan Witzel

activity

20092023

most citedHigher finiteness properties of reductive arithmetic groups in positive characteristic: the rank theorem

31 citations · 149 across the 21 of their papers we have counts for

collaborators

Showing 2017Show all

2 papers · 1 filter

math.GR2017

Simple groups separated by finiteness properties

Rachel Skipper, Stefan Witzel, Matthew C. B. Zaremsky

We show that for every positive integer $n$ there exists a simple group that is of type $F_{n - 1}$ but not of type $F_{n}$ . For $n \geq 3$ these groups are the first k…

math.GR2017★ 10 cited

Classifying spaces from Ore categories with Garside families

Stefan Witzel

We describe how an Ore category with a Garside family can be used to construct a classifying space for its fundamental group(s). The construction simultaneously generalizes Brady's…