Seminar series
Date
Mon, 28 Jan 2013
Time
15:45 -
16:45
Location
L3
Speaker
Brian Bowditch
Organisation
Warwick
By a "coarse median" we mean a ternary operation on a path metric space, satisfying certain conditions which generalise those of a median algebra. It can be interpreted as a kind of non-positive curvature condition, and is applicable, for example to finitely generated groups. It is a consequence of work of Behrstock and Minsky, for example, that the mapping class group of a surface satisfies this condition. We aim to give some examples, results and applications concerning this notion.