proposition: Lemma seq_eq_max_r r b (MAX: max_elt r b) : ⦗eq b⦘ ⨾ r^? ≡ ⦗eq b⦘.
proof: Proof. rewrite crE; relsf; rewrite seq_eq_max; relsf. Qed.
imports: HahnBase HahnList HahnSets HahnRelationsBasic HahnEquational HahnRewrite Arith Setoid