P^2-reducing and toroidal Dehn fillings
arXiv:math/0011057
Abstract
We study the situation where we have two exceptional Dehn fillings on a given hyperbolic 3-manifold. We consider two cases that one filling creates a projective plane, and the other creates an essential torus or a Klein bottle, and give the best possible upper bound on the distance between two fillings for each case.
19 pages, 11 figures