simpa [System.theory] using hp
α : Type u_1
inst✝³ : DecidableEq α
inst✝² : Inhabited α
L : DeductionParameter α
inst✝¹ : L.Normal
inst✝ : Inhabited (MCT L)
p : Formula α
hp : p ∈ System.theory L
⊢ L ⊢! p
no goals