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Title:
Cubical geometry via hyperbolicity
Speaker:
Abstract:
I will discuss a collection of hyperbolic graphs associated to a CAT(0) cube complex and explain how the geometry of the cube complex can be recovered -- up to quasi-isometry -- from its shadows on these graphs. I will explain how this mirrors the Masur-Minsky theory enabling the study of the mapping class group of a surface via projections to curve graphs of subsurfaces. I'll then define "hierarchical hyperbolicity", which is a common generalisation of these two classes of examples, and discuss some applications. This is based on joint work with J. Behrstock and A. Sisto
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