%0 Journal Article %A Margaux, Benedictus %T Vanishing of Hochschild cohomology for affine group schemes and rigidity of homomorphisms between algebraic groups. %J Documenta mathematica %D 2009 %P 653-672 %V 14 %I mathdoc %U http://geodesic.mathdoc.fr/item/DOCMA_2009__14__a6/ %G en %F DOCMA_2009__14__a6