exact Gγ_in
case h.left
ψ : Formula
W : Type
M : KripkeModel W
w : W
α β : Program
Fs : List Formula
δ : List Program
w_Con : evaluate M w (Con (Yset (Fs, δ) ψ))
Gs : List Formula
Gγ_in : (Gs, ε) ∈ H α
aaa : List Formula
bbb : List Program
_in_Hβ : (aaa, bbb) ∈ H β
Fsδ_in_l : (Fs, δ) ∈ [(Gs ∪ aaa, bbb)]
⊢ (Gs, ε) ∈ H α
no goals