exact phi_ih (x :: vs) h1
σ : Instantiation
τ : MetaInstantiation
x : VarName
phi : Formula
phi_ih :
  ∀ (vs : List VarName), NoMetaVarAndAllFreeInList vs phi → NoMetaVarAndAllFreeInList (List.map (↑σ) vs) (sub σ τ phi)
vs : List VarName
h1 : NoMetaVarAndAllFreeInList (x :: vs) phi
⊢ NoMetaVarAndAllFreeInList (List.map (↑σ) (x :: vs)) (sub σ τ phi)
no goals