proposition: Lemma Ind_set0 (x : A) : Ind set0 x = 0.
proof: Proof. by rewrite /Ind inE. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum matrix) mathcomp(Rstruct reals) Reals Lra ssrR Reals_ext realType_ext logb ssr_ext ssralg_ext bigop_ext fdist