140 citations · 1.3k across the 89 of their papers we have counts for
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math.GR2016
Linear cellular automata, duality and sofic groups
Laurent Bartholdi
We produce for arbitrary non-amenable group and field a non-pre-injective, surjective linear cellular automaton. This answers positively Open Problem (OP-14) in Ceccherini-…
math.GR2016★ 1 cited
Algorithmic aspects of branched coverings II/V. Sphere bisets and their decompositions
Laurent Bartholdi, Dzmitry Dudko
We consider "Thurston maps": branched self-coverings of the sphere with ultimately periodic critical points, and prove that the Thurston equivalence problem between them (continuou…
math.GR2016★ 1 cited
The rational homology of the outer automorphism group of
Laurent Bartholdi
We compute the homology groups of the outer automorphism group of the free group of rank . We produce in this manner the first rational…