Mathematics Colloquia and Seminars
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Virtually special square complexesGeometry/Topology
|Speaker: ||Ian Agol, UC Berkeley|
|Location: ||2212 MSB|
|Start time: ||Tue, Feb 21 2012, 3:10PM|
We prove that compact negatively curved square complexes are virtually special. As a consequence of results of Haglund and Wise, they have linear and LERF fundamental groups. The results apply to a larger class of cube complexes with malnormal walls. The proofs depend on recent work of Wise on hyperbolic groups with a quasi-convex hierarchy.