Created
September 28, 2018 19:07
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Axiom of choice in Agda
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| open import Agda.Builtin.Sigma | |
| ac : {X Y : Set} → (ρ : X → Y → Set) → (∀ x → Σ Y (ρ x)) → Σ (X → Y) (λ φ → ∀ x → ρ x (φ x)) | |
| fst (ac ρ rel) x = fst (rel x) | |
| snd (ac ρ rel) x = snd (rel x) |
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