proposition: Lemma decr_nth_intpartE (p : intpart) i : is_rem_corner p i -> decr_nth_intpart p i = decr_nth p i :> seq nat.
proof: Proof. rewrite /decr_nth_intpart /=. by case: (is_rem_corner p i). Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(div ssralg ssrint ssrnum binomial) tools combclass sorted ordtype