proposition: Lemma gt_creal_neq (x y : creal) : (y < x -> x != y)%CR.
proof: Proof. by move/lt_creal_neq /neq_creal_sym. Qed.
imports: mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype) mathcomp(bigop order ssralg ssrnum ssrint rat poly polydiv polyorder) mathcomp(perm matrix mxpoly polyXY binomial bigenough)