Use bot from stdlib
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@ -6,6 +6,7 @@ open import Agda.Primitive
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open import Data.Unit.Base
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open import Data.Product
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open import Cubical.PathPrelude
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open import Data.Empty
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postulate undefined : {ℓ : Level} → {A : Set ℓ} → A
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@ -115,8 +116,6 @@ module _ {ℓ ℓ' : Level} {ℂ : Category {ℓ} {ℓ'}} { A B : Object ℂ } w
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iso-is-epi-mono : ∀ {X} (f : ℂ.Arrow A B ) → Isomorphism f → Epimorphism {X = X} f × Monomorphism {X = X} f
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iso-is-epi-mono f iso = iso-is-epi f iso , iso-is-mono f iso
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data ⊥ : Set where
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¬_ : {ℓ : Level} → Set ℓ → Set ℓ
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¬ A = A → ⊥
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