proposition: Fact subfx_scaleAr a u v : subfx_scale a (u * v) = u * (subfx_scale a v).
proof: Proof. exact: mulrCA. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq div) mathcomp(choice fintype tuple finfun bigop ssralg countalg) mathcomp(finalg zmodp matrix vector falgebra poly polydiv) mathcomp(mxpoly generic_quotient)