EXAMPLES OF NON-TRIVIAL ROOTS OF UNITY AT IDEAL POINTS OF HYPERBOLIC 3-MANIFOLDS

This paper gives examples of hyperbolic 3-manifolds whose SL(2, C) character varieties have ideal points for which the associated roots of unity are not ±1. This answers a question of Cooper, Culler, Gillet, Long, and Shalen as to whether roots of unity other than ±1 occur.