4 lines
121 B
Text
4 lines
121 B
Text
550.lean:3:2-3:6: error: unsolved goals
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x : Nat
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h : ∀ (x : Nat), x + 1 = Nat.succ x
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⊢ Nat.succ (x + 1) = 1 + (x + 1)
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