8 lines
223 B
Text
8 lines
223 B
Text
Set: pp::colors
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Set: pp::unicode
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Assumed: C
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Assumed: D
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Assumed: R
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Proved: R2
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theorem R2 (A1 A2 B1 B2 : Type) (H : (A1 → B1) = (A2 → B2)) (a : A1) : B1 = B2 :=
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R A1 A2 (λ x : A1, B1) (λ x : A2, B2) H a
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