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