fact: Example f2 : Formula LNN := (existH 1 (equal (var 0) (apply LNN Succ_ (Tcons (var 1) Tnil )))).
imports: Coq(Arith Lists.List) hydras.Ackermann(fol folProp folProof Languages folLogic folLogic2 folLogic3 subAll Deduction primRec)