22 citations · 72 across the 26 of their papers we have counts for
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math.KT2010★ 22 cited
Closed manifolds with transcendental L2-Betti numbers
Mikaël Pichot, Thomas Schick, Andrzej Zuk
In this paper, we show how to construct examples of closed manifolds with explicitly computed irrational, even transcendental L2 Betti numbers, defined via the universal covering.…
math.MG2010★ 4 cited
Removing chambers in Bruhat-Tits buildings
Sylvain Barre, Mikael Pichot
We introduce and study a family of countable groups constructed from Euclidean buildings by "removing" suitably chosen subsets of chambers.