, Volume 17, Issue 5, pp 1551-1620

Special Cube Complexes

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Abstract.

We introduce and examine a special class of cube complexes. We show that special cube-complexes virtually admit local isometries to the standard 2-complexes of naturally associated right-angled Artin groups. Consequently, special cube-complexes have linear fundamental groups. In the word-hyperbolic case, we prove the separability of quasiconvex subgroups of fundamental groups of special cube-complexes. Finally, we give a linear variant of Rips’s short exact sequence.

Research supported by grants from NSERC and FCAR.
Received: October 2005, Accepted: September 2006