proposition: Lemma divcmE m1 m2 i : divcm m1 m2 i = (m1 i - m2 i)%N.
proof: Proof. by rewrite cmE fsfun_fun; case: finsuppP. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap