proposition: Lemma fdist_belastE i : fdist_belast i = D (widen_ord (leqnSn _) i).
proof: Proof. by rewrite /fdist_belast; unlock; rewrite fdist_delE ltn_ord. Qed.
imports: mathcomp(all_ssreflect ssralg fingroup perm matrix) mathcomp(all_algebra vector reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(Rstruct) ssrR logb realType_ext ssr_ext ssralg_ext bigop_ext