### Ptolemy coordinates and the A-polynomial

- Series
- Geometry Topology Seminar
- Time
- Friday, April 11, 2014 - 13:05 for 1 hour (actually 50 minutes)
- Location
- Skiles 006
- Speaker
- Christian Zickert – University of Maryland – zickert@math.umd.edu

The Ptolemy coordinates are efficient coordinates for computingboundary-unipotent representations of a 3-manifold group in SL(2,C). Wedefine a slightly modified version which allows you to computerepresentations that are not necessarily boundary-unipotent. This givesrise to a new algorithm for computing the A-polynomial.