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@ -34,7 +34,7 @@ note that `zero_add` is about zero add something, and `add_zero` is about someth
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The names of the proofs tell you what the theorems are. Anyway, let's prove `0 + n = n`.
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The names of the proofs tell you what the theorems are. Anyway, let's prove `0 + n = n`.
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"
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"
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Statement MyNat.zero_add (attr := simp)
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Statement MyNat.zero_add
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"For all natural numbers $n$, we have $0 + n = n$."
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"For all natural numbers $n$, we have $0 + n = n$."
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(n : ℕ) : 0 + n = n := by
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(n : ℕ) : 0 + n = n := by
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Hint "You can start a proof by induction over `n` by typing:
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Hint "You can start a proof by induction over `n` by typing:
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Jon Eugster
3 years ago