%0 Journal Article %A Dave Witte Morris %T A Cohomological Proof that Real Representations of Semisimple LieĀ Algebras Have $\mathbb{Q}$-Forms %J Symmetry, integrability and geometry: methods and applications %D 2015 %V 11 %U http://geodesic.mathdoc.fr/item/SIGMA_2015_11_a33/ %G en %F SIGMA_2015_11_a33