proposition: Lemma bvalid_ok : bvalid = true <-> valid.
proof: Proof. apply forallb_ok_fintype. 2: hyp. intro f. rewrite forallb_forall. intuition. rewrite <- bgt_nat_ok. auto. rewrite bgt_nat_ok. auto. Qed.
imports: CoLoR(LogicUtil ATrs ListUtil NatUtil VecUtil SN BoolUtil RelUtil ListNodup VecFilterPerm ARelation ACompat NaryFunction BoundNat ListDec)