proposition: Lemma mulB_muln n (p:BITS n) m1 m2 : p *# (m1*m2) = p *# m1 *# m2.
proof: Proof. destruct n; first apply trivialBits. apply toZp_inj. autorewrite with ZpHom. by rewrite natrM mulrA. Qed.
imports: HB(structures) mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq fintype tuple zmodp div) ssrextra.tuple ssrextra.nat spec spec.properties operations mathcomp(ssralg)