Type: Article
Publication Date: 2013-10-02
Citations: 12
DOI: https://doi.org/10.1080/10586458.2013.832441
Let M be a noncompact hyperbolic 3-manifold that has a triangulation by positively oriented ideal tetrahedra. We explain how to produce local coordinates for the variety defined by the gluing equations for -representations. In particular, we prove local rigidity of the “geometric” representation in , recovering a recent result of Menal-Ferrer and Porti. More generally, we give a criterion for local rigidity of -representations and provide detailed analysis of the figure-eight-knot sister manifold exhibiting the different possibilities that can occur.