31 citations · 149 across the 21 of their papers we have counts for
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math.GR2009★ 8 cited
Finiteness Properties of Chevalley Groups over a Polynomial Ring over a Finite Field
Kai-Uwe Bux, Ralf Köhl, Stefan Witzel
It is known from work by H. Abels and P. Abramenko that for a classical Fq-group G of rank n the arithemetic lattice G(Fq[t]) of Fq[t]-rational points is of type Fn-1 provided that…
math.GR2009★ 4 cited
The sphericity of the Phan geometries of type Bn and Cn and the Phan-type theorem of type F4
Ralf Köhl, Stefan Witzel
We adapt and refine methods developed by Abramenko and Devillers--Köhl--Mühlherr in order to establish the sphericity of the Phan geometries of type B_n and C_n, and their generali…