Theorem: LO.FirstOrder.Arith.Model.Exponential.exponential_even (Arithmetization/ISigmaZero/Exponential/Exp.lean)

State before:
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
x y : M
⊢ (∃ y', y = y' ^ 2 ∧ Exponential x y') → Exponential (2 * x) y
Tactic:
rintro ⟨y, rfl, h⟩
State after:
case intro.intro
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
x y : M
h : Exponential x y
⊢ Exponential (2 * x) (y ^ 2)

State before:
case intro.intro
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
x y : M
h : Exponential x y
⊢ Exponential (2 * x) (y ^ 2)
Tactic:
exact bit_zero h
State after:
no goals