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No quasi-isometric rigidity for proper actions on CAT(0) cube complexes (2208.07102v3)

Published 15 Aug 2022 in math.GR

Abstract: We exhibit a variety of groups that act properly and even cocompactly on median graphs (a.k.a. one-skeletons of CAT(0) cube complexes), with quasi-isometric groups that do not admit any proper action on a median graph. This answes a question of Niblo, Sageev and Wise. Our examples are all quasi-isometrically trivial central extensions of certain cubulated groups.

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