%0 Journal Article %T Cohomology of Deligne-Lusztig varieties for groups of type A %A Olivier Dudas %J Mathematics %D 2011 %I arXiv %X We study the cohomology of parabolic Deligne-Lusztig varieties associated to unipotent blocks of GLn(q). We show that the geometric version of Brou\'e's conjecture over Q_\ell, together with Craven's formula, holds for any unipotent block whenever it holds for the principal Phi_1-block, that is for the variety X(\pi). %U http://arxiv.org/abs/1112.5383v1