33 lines
438 B
Text
33 lines
438 B
Text
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import algebra.group
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open algebra
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section
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variables {A : Type} [group A]
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variables {B : Type} [group B]
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definition foo (a b : A) : a * b = b * a :=
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sorry
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definition bla (b : B) : b * 1 = b :=
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sorry
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print foo
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print bla
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end
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section
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variable {A : Type}
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variable [group A]
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variable {B : Type}
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variable [group B]
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definition foo2 (a b : A) : a * b = b * a :=
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sorry
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definition bla2 (b : B) : b * 1 = b :=
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sorry
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print foo2
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print bla2
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end
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