%0 Journal Article %A A. Ramanathan %T Equations defining Schubert varieties and Frobenius splittings of diagonals %J Publications Mathématiques de l'IHÉS %D 1987 %P 61-90 %V 65 %I Institut des Hautes Études Scientifiques %U https://pmihes.centre-mersenne.org/articles/10.1007/BF02698935/ %R 10.1007/BF02698935 %G en %F PMIHES_1987__65__61_0