proposition: Lemma ltmxEneq : (A < B)%MS = (A <= B)%MS && ~~ (A == B)%MS.
proof: Proof. by apply: andb_id2l => ->. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype finfun bigop finset fingroup perm order) mathcomp(div prime binomial ssralg finalg zmodp matrix)