Theorem: LO.FirstOrder.Arith.Model.IsMapping.get_uniq (Arithmetization/ISigmaOne/HFS/Basic.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
y m : M
h : IsMapping m
x : M
hx : x ∈ domain m
hy : ⟪x, y⟫ ∈ m
⊢ ⟪x, h.get hx⟫ ∈ m
Tactic:
simp
State after:
no goals