fact: Example F2 : Formula L := forallH 0 (forallH 1 (impH (R (var 0) (var 1)) (R (var 1) (var 0)))).
imports: Coq(Arith Lists.List) hydras.Ackermann(fol folProp folProof Languages folLogic folLogic2 folLogic3 subAll Deduction primRec)