Theorem: LO.FirstOrder.Arith.Model.length_mul_exp (Arithmetization/ISigmaZero/Exponential/Log.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* 𝐈𝚺₁
a : M
pos : 0 < a
i : M
⊢ ‖a * exp i‖ = ‖a‖ + i
Tactic:
simp [length_mul_pow2 pos (exp_pow2 i)]
State after:
no goals