Initial objects #4
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@ -2,7 +2,7 @@
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module Thinning.Properties where
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open import Data.List.Base using (List)
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open import Data.List.Base using (List; [])
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open import Level using (Level)
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open import Relation.Binary.PropositionalEquality.Core using (_≡_; refl; cong)
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@ -48,3 +48,8 @@ assoc (exclude θ) (include φ) (include ψ) = cong exclude (assoc θ φ ψ)
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assoc (exclude θ) (include φ) (exclude ψ) = cong exclude (assoc (exclude θ) (include φ) ψ)
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assoc (exclude θ) (exclude φ) (include ψ) = cong exclude (assoc (exclude θ) φ ψ)
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assoc (exclude θ) (exclude φ) (exclude ψ) = cong exclude (assoc (exclude θ) (exclude φ) ψ)
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-- ¡ is the only Thinning from []
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¡-unique : (θ : Thinning A [] xs) → ¡ ≡ θ
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¡-unique end = refl
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¡-unique (exclude θ) = cong exclude (¡-unique θ)
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