9 lines
220 B
Text
9 lines
220 B
Text
import logic
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definition f {A : Type} {B : Type} (f : A → B → Prop) ⦃C : Type⦄ {R : C → C → Prop} {c : C} (H : R c c) : R c c
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:= H
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variable g : Prop → Prop → Prop
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variable H : true ∧ true
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check f g H
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