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Dror Bar-Natan:
Talks:

#
A 3-dimensional perspective on Drinfel'd's theory of quasi Hopf algebras

###
California Institute of Technology, February 21, 2000

Dror Bar-Natan,
Hebrew University and MSRI.
**Abstract:** After recalling what quasi Hopf algebras are and
what Chern Simons theory is, we will explain that in a certain sense,
they are one and the same. This has significant implications for the
theory of quasi Hopf algebras, as it implies that their prized object,
the associator, is a 3-dimensional object rather than merely a braid-like
1-dimensional construct. If time will allow, we will also discuss some
speculative implications to Chern Simons theory.

The talk will be about joint work of Dylan Thurston and myself, though
the former should not be held liable for all that will not make sense.

This abstract is at http://www.math.toronto.edu/~drorbn/Talks/CalTech-000221/.

Handout: PDF (394K) PS (829K).