24 citations · 66 across the 23 of their papers we have counts for
24 papers
Generalising a Theorem of Lichtman
Giorgio Leoni, Conchita Martínez-Pérez, Thomas Weigel
We show that under a suitable additional hypothesis the restricted Zassenhaus $\F_p$-Lie algebra or the rational Magnus Lie algebra of a free amalgamated product is the free amalga…
A gentle introduction to Drinfel'd associators
Martin Bordemann, Andrea Rivezzi, Thomas Weigel
In this note we give an introduction to Drinfel'd's associator coming from the Knizhnik-Zamolodchikov connections and a self-contained proof of the hexagon and pentagon equations b…
Oriented right-angled Artin pro- groups and maximal pro- Galois groups
Simone Blumer, Claudio Quadrelli, Thomas S. Weigel
For a prime number we introduce and study oriented right-angled Artin pro- groups (oriented pro- RAAGs for short) associated to a finite oriented graph…
Normal -coverings of the finite simple groups and their generalizations
Daniela Bubboloni, Pablo Spiga, Thomas Weigel
Given a finite group , we say that has weak normal covering number if is the smallest integer with admitting proper subgroups s…
On the second cohomology of the norm one group of a p-adic division algebra
Mikhail Ershov, Thomas Weigel
Let be a -adic field, that is, a finite extension of . Let be a finite-dimensional central division algebra over and let be the group of eleme…
Unimodular totally disconnected locally compact groups of rational discrete cohomological dimension one
Ilaria Castellano, Bianca Marchionna, Thomas Weigel
It is shown that a Stallings--Swan theorem holds in a totally disconnected locally compact (= t.d.l.c.) context (cf. Thm. B). More precisely, a compactly generated -b…