11 lines
260 B
Plaintext
11 lines
260 B
Plaintext
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Solve the following problem with Lean 4 code and explanatory comments:
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```lean4
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import Mathlib
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theorem demo (n : ℕ) : n + 0 = n := by sorry
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```
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Replace every sorry statement with an appropriate proof. Provide a complete solution in the lean4 code block.
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