4 citations · 15 across the 11 of their papers we have counts for
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math.GR2019★ 3 cited
Two generalisations of Leighton's Theorem
Sam Shepherd, Giles Gardam, Daniel J. Woodhouse
Leighton's graph covering theorem says that two finite graphs with a common cover have a common finite cover. We present a new proof of this using groupoids, and use this as a mode…
math.GT2019★ 2 cited
Agol's theorem on hyperbolic cubulations
Sam Shepherd
Agol proved that hyperbolic cubulated groups are virtually special. The aim of these notes is to make the proof accessible to a wider audience; we retain the underlying ideas and c…