exact dni'! efq!
case mpr.eaxm.inl.intro
α : Type u
inst✝ : DecidableEq α
𝓓 : DeductionParameter α
p q : Formula α
d : 𝐂𝐥 ⊢! Axioms.EFQ q
hEFQ : ∃ p, Axioms.EFQ p = Axioms.EFQ q
⊢ 𝐈𝐧𝐭 ⊢! ~~Axioms.EFQ q
no goals