7 lines
219 B
Text
7 lines
219 B
Text
Set: pp::colors
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Set: pp::unicode
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Assumed: f
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Assumed: g
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∀ a b : Type, ∃ c : Type, g a b = f c
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∀ a b : Type, ∃ c : Type, g a b = f c : Bool
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∀ (a b : Type), (∀ (x : Type), g a b == f x → ⊥) → ⊥
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