2 lines
214 B
Text
2 lines
214 B
Text
constructor Ring.mk.{u} : {R : Type u} → [toZero : Zero R] → (gsmul : Int → R → R) → (∀ (a : R), gsmul 0 a = 0) → Ring R
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Ring.mk (fun x n => Int.toNat x * n) (_ : ∀ (a : Nat), 0 * a = 0) : Ring Nat
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