Topology Seminar: Tetsuya Ito
- Date: 04/04/2012
- Time: 16:00
Lecturer(s):
Tetsuya Ito
Location:
University of British Columbia
Topic:
Self-linking number of transverse knots in general open books
Description:
Abstract
Every transverse knot in a contact 3-manifold is represented as a closed
braid in an open book. In this talk, based on a new technique called an
open book foliation, we give a formula of self-linking number in terms
of braids and open books. Surprisingly, our self-linking number formula
essentially uses Johnson's homomorphism. This is a joint work with Keiko
Kawamuro (Univ. Iowa).
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