10 lines
171 B
Text
10 lines
171 B
Text
structure is_tr [class] (A : Type) : Type :=
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(x : A)
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theorem foo (B : Type) [H : is_tr B] : B :=
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sorry
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theorem bar (A : Type) (H : is_tr A) : A :=
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begin
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apply foo
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end
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