%0 Journal Article
%T Ptolemy coordinates, Dehn invariant, and the A-polynomial
%A Christian K. Zickert
%J Mathematics
%D 2014
%I arXiv
%X We define Ptolemy coordinates for representations that are not necessarily boundary-unipotent. This gives rise to a new algorithm for computing the SL(2,C) A-polynomial, and more generally the SL(n,C) A-varieties. We also give a formula for the Dehn invariant of an SL(n,C)-representation.
%U http://arxiv.org/abs/1405.0025v1