Pathologies du groupe des classes de R-\'equivalence d'un groupe alg\'ebrique lin\'eaire
Abstract
Let k0 be a field of characteristic p>0 and k=k0(t), where t is transcendental over k0. We give an example of a smooth connected unipotent k-group G such that G(F)/R is non-commutative for some finite separable field extension F containing k.
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