Abstract
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Leighton’s graph covering theorem states that two finite graphs with common
universal cover have a common finite cover. We generalize this to a large family of
nonpositively curved special cube complexes that form a natural generalization of
regular graphs. This family includes both hyperbolic and nonhyperbolic CAT(0) cube
complexes.
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Keywords
CAT(0) cube complexes, finite covering spaces
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Mathematical Subject Classification
Primary: 20F65, 20F67
Secondary: 20E26, 20E42, 20F55
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Publication
Received: 14 February 2022
Revised: 28 April 2022
Accepted: 19 May 2022
Published: 26 September 2023
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