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math.GT2019
Subgroups of right-angled Coxeter groups via Stallings-like techniques
Pallavi Dani, Ivan Levcovitz
We associate cube complexes called completions to each subgroup of a right-angled Coxeter group (RACG). A completion characterizes many properties of the subgroup such as whether i…
math.GT2019
Comparing the Roller and B(X) boundaries of CAT(0) cube complexes
Ivan Levcovitz
The Roller boundary is a well-known compactification of a CAT(0) cube complex X. When X is locally finite, essential, irreducible, non-Euclidean and admits a cocompact action by a…