(1) Département de mathématiques, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland;(2) Institut de Mathématique Pure et Appliquée, Université catholique de Louvain, 1348 Louvain-la-Neuve, Belgium
Abstract:
Using a cohomological obstruction, we construct examples of absolutely simple adjoint classical groups of type 2An with n3mod4, Cn or 1Dn with n0mod4, which are not R-trivial hence not stably rational.Mathematics Subject Classification (2000): 11E57, 20G15in final form: 13 June 2003
3mod4, Cn or 1Dn with n