proposition: Lemma kAut1E E (f : 'AEnd(L)) : kAut 1 E f = (f @: E <= E)%VS.
proof: Proof. by rewrite kAutE k1AHom. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq div) mathcomp(choice fintype tuple finfun bigop ssralg poly) mathcomp(polydiv finset fingroup morphism quotient perm) mathcomp(action zmodp cyclic matrix mxalgebra vector) mathcomp(falgebra fieldext separable)