simpa [two_pow_two_eq_four] using (show Exponential (1 : M) 2 from by simp).bit_zero
M : Type u_1
inst✝⁵ : Zero M
inst✝⁴ : One M
inst✝³ : Add M
inst✝² : Mul M
inst✝¹ : LT M
inst✝ : M ⊧ₘ* 𝐈𝚫₀
⊢ Exponential 2 4
no goals