comment out error
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@@ -3,9 +3,9 @@ import Game.MyNat.Addition
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namespace MyNat
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attribute [-simp] MyNat.succ.injEq
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example (a b : ℕ) (h : (succ a) = b) : succ (succ a) = succ b := by
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simp
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sorry
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-- example (a b : ℕ) (h : (succ a) = b) : succ (succ a) = succ b := by
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-- simp
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-- sorry
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--axiom succ_inj {a b : ℕ} : succ a = succ b → a = b
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