apply IsReplOfFormulaInFormula.imp_
case h1.a.a.a
P : Formula
v : VarName
⊢ IsReplOfFormulaInFormula P P.not_.not_ ((forall_ v P).not_.not_.imp_ (forall_ v P))
    ((forall_ v P.not_.not_).not_.not_.imp_ (forall_ v P))
case h1.a.a.a.a
P : Formula
v : VarName
⊢ IsReplOfFormulaInFormula P P.not_.not_ (forall_ v P).not_.not_ (forall_ v P.not_.not_).not_.not_

case h1.a.a.a.a
P : Formula
v : VarName
⊢ IsReplOfFormulaInFormula P P.not_.not_ (forall_ v P) (forall_ v P)