# The product of two `AddGroupWithOne`s. #

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instance Prod.instAddGroupWithOne {α : Type u_1} {β : Type u_2} [AddGroupWithOne α] [AddGroupWithOne β] :
AddGroupWithOne (α × β)
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@[simp]
theorem Prod.fst_intCast {α : Type u_1} {β : Type u_2} [AddGroupWithOne α] [AddGroupWithOne β] (n : ℤ) :
(↑n).1 = ↑n
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@[simp]
theorem Prod.snd_intCast {α : Type u_1} {β : Type u_2} [AddGroupWithOne α] [AddGroupWithOne β] (n : ℤ) :
(↑n).2 = ↑n