2 lines
220 B
Text
2 lines
220 B
Text
funext : ∀ {A : Type} {B : A → Type} {f g : Π (x : A), B x}, (∀ (x : A), f x = g x) → f = g
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strong_indefinite_description : Π {A : Type} (P : A → Prop), nonempty A → { (x : A), (∃ (x : A), P x) → P x }
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