proposition: Lemma swizzle_mx_is_scalable m n p q f g k : scalable (@swizzle_mx R m n p q f g k).
proof: Proof. by move=> a A; apply/matrixP=> i j; rewrite !mxE. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype finfun bigop finset fingroup perm order) mathcomp(div prime binomial ssralg countalg finalg zmodp)