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Jon Eugster
2023-04-25 14:13:18 +02:00
parent 1a9a299ed6
commit 0ea112c29e
1 changed files with 1 additions and 1 deletions
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server/nng/NNG/Levels/Addition/Level_1.lean
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@@ -34,7 +34,7 @@ note that `zero_add` is about zero add something, and `add_zero` is about someth
The names of the proofs tell you what the theorems are. Anyway, let's prove `0 + n = n`. The names of the proofs tell you what the theorems are. Anyway, let's prove `0 + n = n`.
" "
Statement MyNat.zero_add (attr := simp) Statement MyNat.zero_add
"For all natural numbers $n$, we have $0 + n = n$." "For all natural numbers $n$, we have $0 + n = n$."
(n : ℕ) : 0 + n = n := by (n : ℕ) : 0 + n = n := by
Hint "You can start a proof by induction over `n` by typing: Hint "You can start a proof by induction over `n` by typing: