Subgroup separability and special cube complexes

21 May 2014
16:00
Sam Brown
Abstract

Subgroup separability is a group-theoretic property that has important implications for geometry and topology, because it allows us to lift immersions to embeddings in a finite sheeted covering space. I will describe how this works in the case of graphs, and go on to motivate the construction of special cube complexes as an attempt to generalise the technique to higher dimensions.

  • Junior Topology and Group Theory Seminar