proposition: Lemma cset0P X : (X == cset0) = (X == set0 :> set _).
proof: Proof. case: X => x [Hx] /=; apply/eqP/eqP => [-[] //| ?]; subst x; exact: cset_ext. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg fingroup perm matrix) mathcomp(mathcomp_extra boolp classical_sets Rstruct) mathcomp(ssrnum ereal) mathcomp(lra Rstruct reals) Reals ssrR Reals_ext Ranalysis_ext ssr_ext ssralg_ext logb realType_ext fdist