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view src/delta_preserve_id.agda @ 52:6ca594d19ca4

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author Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
date Sun, 15 Feb 2015 21:56:19 +0900
parents 4cc65012412f
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delta-preserve-id :  {l : Level} {A : Set l} {n : Nat} -> 
    (d : Delta A (S n)) -> (delta-fmap id) d ≡ id d
delta-preserve-id (mono x)    = refl
delta-preserve-id (delta x d) = cong (delta x) (delta-preserve-id d)