simp [H, relateSeq] at *
W✝ : Type
M : KripkeModel W✝
v w : W✝
α β : Program
v_γ_w : relate M (α⋓β) v w
⊢ ∃ Fδ ∈ H (α⋓β), (M, v)⊨Fδ.1 ∧ relateSeq M Fδ.2 v w
W✝ : Type
M : KripkeModel W✝
v w : W✝
α β : Program
v_γ_w : relate M α v w ∨ relate M β v w
⊢ ∃ a b, ((a, b) ∈ H α ∨ (a, b) ∈ H β) ∧ (∀ f ∈ a, evaluate M v f) ∧ relateSeq M b v w