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# Richard Hain : The Lie Algebra of the Mapping Class Group, Part 1

In this talk I will review the construction of the Lie algebra associated to the mapping class group of a (possibly decorated) surface and explain how this generalizes the Lie algebra associated to the pure braid group. I will also explain the analogue of the KZ-equation in the mapping class group case. In the second talk I will discuss filtrations of this Lie algebra associated to curve systems on the surface and their relation to handlebody groups.

**Category**: Geometry and Topology**Duration**: 01:34:43**Date**: February 13, 2007 at 4:25 PM-
**Tags:**seminar, Geometry/topology Seminar

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