fact: Definition Expressible (n : nat) (R : naryRel n) (A : Formula) : Prop := (forall v : nat, In v (freeVarF A) -> v <= n /\ v <> 0) /\ ExpressibleHelp n R A.
imports: Coq(Arith List) hydras.Ackermann(ListExt folProp subProp extEqualNat Languages LNN NewNotations)