%0 Journal Article %T The Andre-Oort conjecture %A Bruno Klingler %A Andrei Yafaev %J Mathematics %D 2012 %I arXiv %X In this paper we prove, assuming the Generalized Riemann Hypothesis, the Andr?e-Oort conjecture on the Zariski closure of sets of special points in a Shimura variety. In the case of sets of special points satisfying an additional assumption, we prove the conjecture without assuming the GRH. %U http://arxiv.org/abs/1209.0936v2