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34 lines
363 B
Plaintext
34 lines
363 B
Plaintext
2 years ago
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import NNG.Metadata
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import NNG.MyNat.Addition
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import Std.Tactic.RCases
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Game "NNG"
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World "AdvProposition"
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Level 2
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Title ""
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open MyNat
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Introduction
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"
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"
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set_option tactic.hygienic false
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Statement and_symm
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""
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(P Q : Prop) : P ∧ Q → Q ∧ P := by
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intro h
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rcases h with ⟨p, q⟩
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constructor
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exact q
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exact p
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NewTactic rcases
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Conclusion
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"
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"
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