Dynnikov’s Coordinates

Geometry Topology Seminar
Monday, August 25, 2014 - 2:05pm
1 hour (actually 50 minutes)
Skiles 00-TBA
Georgia Tech
In this talk I will explain the Dynnikov’s coordinate system, which puts global coordinates on the boundary of Teichmuller space of the finitely punctured disk, and the update rules which describe the action of the Artin braid generators in terms of Dynnikov’s coordinates. If time permits, I will list some applications of this coordinate system. These applications include computing the geometric intersection number of two curves, computing the dilatation and moreover studying the dynamics of a given pseudo-Anosov braid on the finitely punctured disk.