proposition: Lemma div_creal_creal (y : creal F) (y_neq0 : (y != 0)%CR) : (y / y_neq0 == 1%:CR)%CR.
proof: Proof. apply: eq_crealP; exists_big_modulus m F. move=> e i e_gt0 hi; rewrite /= divff ?subrr ?normr0 //. by rewrite (@creal_neq_always _ _ 0%CR). by close. Qed.
imports: HB(structures) 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 generic_quotient) mathcomp(cauchyreals separable zmodp bigenough)