9 lines
248 B
Text
9 lines
248 B
Text
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Set: pp::colors
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Set: pp::unicode
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Imported 'macros'
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Imported 'tactic'
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Using: Nat
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induct.lean:7:0: error: invalid tactic command, unexpected end of file
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Proof state:
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a : ℕ, b : ℕ, n : ℕ, iH : a + n = n + a ⊢ a + (n + 1) = n + 1 + a
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