7 lines
185 B
Text
7 lines
185 B
Text
example (a b : Prop) : a ∧ b → b ∧ a :=
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begin
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intro Hab,
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have Ha : a, from and.elim_left Hab,
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have Hb : b, from and.elim_right Hab,
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show b ∧ a, from and.intro _ Ha
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end
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