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Convex cocompact right-angled Gromov-Thurston polyhedra

Sami Douba

math.GTarXiv:2608.19640

Abstract

Lee and Marquis exhibited convex cocompact hyperbolic reflection groups in dimension 5 whose limit sets are homeomorphic to the 3-sphere, but none of whose finite-index subgroups can be realized as 4-dimensional real hyperbolic lattices. Using different methods, we furnish right-angled examples.

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