SMS scnews item created by Jonathan Hillman at Wed 16 Apr 2008 1552
Type: Seminar
Distribution: World
Expiry: 24 Apr 2008
Calendar1: 24 Apr 2008 1405-1500
CalLoc1: UNSW Red Centre 4082
Auth: jonh@asti.maths.usyd.edu.au

Joint Colloquium: Williams -- Knots and Algebraic Dynamical Systems

We study a classical invariant of knots, the Alexander module, via its Pontrjagin dual.
This is an algebraic dynamical system, a compact group with an action by automorphisms.
It has an elementary combinatorial description in terms of ``dynamic" colourings of a
knot diagram.  We will discuss the relation between topology of the knot and dynamics of
the dual, and give examples.  (This is joint work with Daniel Silver.)  

NOTE that this talk is on Thursday 24th, as Friday is Anzac Day.


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