Theorem: ClassicalPropositionalLogic.Provable.mp (GlimpseOfLean/Exercises/Topics/ClassicalPropositionalLogic.lean)

State before:
v : Variable → Prop
A B : Formula
Γ Δ : Set Formula
h1 : Provable (A ⇒ B)
h2 : Γ ⊢ A
⊢ Γ ⊢ B
Tactic:
sorry
State after:
no goals