proposition: Fact fieldOver_scaleA a b u : a *F: (b *F: u) = (a * b) *F: u.
proof: Proof. exact: mulrA. 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)