constructor
α : Type u_1
inst✝ : DecidableEq α
p : Formula α
⊢ 𝐓𝐫𝐢𝐯 ⊢! p ↔ 𝐂𝐥 ⊢! (pᵀᴾ) ⋯
case mp
α : Type u_1
inst✝ : DecidableEq α
p : Formula α
⊢ 𝐓𝐫𝐢𝐯 ⊢! p → 𝐂𝐥 ⊢! (pᵀᴾ) ⋯

case mpr
α : Type u_1
inst✝ : DecidableEq α
p : Formula α
⊢ 𝐂𝐥 ⊢! (pᵀᴾ) ⋯ → 𝐓𝐫𝐢𝐯 ⊢! p