proposition: Fact subvs_mulDr : right_distributive subvs_mul +%R.
proof: Proof. move=> x y z; apply/val_inj/mulrDr. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype div tuple finfun bigop ssralg) mathcomp(finalg zmodp matrix vector poly)