Seminar series
Date
Wed, 21 May 2014
Time
16:00 -
17:00
Location
C6
Speaker
Sam Brown
Organisation
UCL
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.