31 citations · 149 across the 21 of their papers we have counts for
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math.GR2013★ 5 cited
CAT(0) cubical complexes for graph products of finitely generated abelian groups
Kim Ruane, Stefan Witzel
We show that every graph product of finitely generated abelian groups acts properly and cocompactly on a CAT(0) cubical complex. The complex generalizes (up to subdivision) the Sal…
math.GR2013★ 2 cited
A free subgroup in the image of the 4-strand Burau representation
Stefan Witzel, Matthew C. B. Zaremsky
It is known that the Burau representation of the 4-strand braid group is faithful if and only if certain matrices f and k generate a (non-abelian) free group. Regarding f and k as…