Mercurial > hg > Members > atton > delta_monad
annotate agda/delta.agda @ 57:dfcd72dc697e
ReDefine Delta used non-empty-list for infinite changes
author | Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp> |
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date | Sat, 22 Nov 2014 12:29:32 +0900 |
parents | bfb6be9a689d |
children | 46b15f368905 |
rev | line source |
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Define Similar in Agda
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1 open import list |
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2 open import basic |
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3 |
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4 open import Level |
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Define Monad-law 1-4
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5 open import Relation.Binary.PropositionalEquality |
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6 open ≡-Reasoning |
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7 |
43
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8 module delta where |
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9 |
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10 |
43
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11 data Delta {l : Level} (A : Set l) : (Set (suc l)) where |
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12 mono : A -> Delta A |
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13 delta : A -> Delta A -> Delta A |
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14 |
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15 deltaAppend : {l : Level} {A : Set l} -> Delta A -> Delta A -> Delta A |
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16 deltaAppend (mono x) d = delta x d |
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17 deltaAppend (delta x d) ds = delta x (deltaAppend d ds) |
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18 |
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19 headDelta : {l : Level} {A : Set l} -> Delta A -> Delta A |
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20 headDelta (mono x) = mono x |
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21 headDelta (delta x _) = mono x |
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22 |
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23 tailDelta : {l : Level} {A : Set l} -> Delta A -> Delta A |
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24 tailDelta (mono x) = mono x |
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25 tailDelta (delta _ d) = d |
26
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26 |
38
6ce83b2c9e59
Proof Functor-laws
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27 |
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Proof Functor-laws
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28 -- Functor |
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29 fmap : {l ll : Level} {A : Set l} {B : Set ll} -> (A -> B) -> (Delta A) -> (Delta B) |
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30 fmap f (mono x) = mono (f x) |
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31 fmap f (delta x d) = delta (f x) (fmap f d) |
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32 |
26
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33 |
38
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Proof Functor-laws
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34 |
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Add Haskell style Monad-laws and Proof Monad-laws-h-1
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35 -- Monad (Category) |
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36 |
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37 -- TODO: mu |
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38 -- TODO: bind |
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39 |
26
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40 |
43
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41 eta : {l : Level} {A : Set l} -> A -> Delta A |
57
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42 eta x = mono x |
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Define Monad-law 1-4
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43 |
43
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44 returnS : {l : Level} {A : Set l} -> A -> Delta A |
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45 returnS x = mono x |
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46 |
43
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47 returnSS : {l : Level} {A : Set l} -> A -> A -> Delta A |
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48 returnSS x y = deltaAppend (returnS x) (returnS y) |
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49 |
33 | 50 |
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Add Haskell style Monad-laws and Proof Monad-laws-h-1
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51 -- Monad (Haskell) |
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52 return : {l : Level} {A : Set l} -> A -> Delta A |
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53 return = eta |
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54 |
41
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
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55 _>>=_ : {l ll : Level} {A : Set l} {B : Set ll} -> |
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56 (x : Delta A) -> (f : A -> (Delta B)) -> (Delta B) |
57
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57 (mono x) >>= f = f x |
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58 (delta x d) >>= f = deltaAppend (headDelta (f x)) (d >>= (tailDelta ∙ f)) |
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59 |
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60 |
38
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Proof Functor-laws
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61 |
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Proof Functor-laws
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62 -- proofs |
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63 |
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Proof Functor-laws
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64 |
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Proof Functor-laws
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65 -- Functor-laws |
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66 |
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Proof Functor-laws
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67 -- Functor-law-1 : T(id) = id' |
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68 functor-law-1 : {l : Level} {A : Set l} -> (d : Delta A) -> (fmap id) d ≡ id d |
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69 functor-law-1 (mono x) = refl |
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70 functor-law-1 (delta x d) = cong (delta x) (functor-law-1 d) |
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71 |
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72 -- Functor-law-2 : T(f . g) = T(f) . T(g) |
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73 functor-law-2 : {l ll lll : Level} {A : Set l} {B : Set ll} {C : Set lll} -> |
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74 (f : B -> C) -> (g : A -> B) -> (d : Delta A) -> |
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75 (fmap (f ∙ g)) d ≡ ((fmap f) ∙ (fmap g)) d |
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76 functor-law-2 f g (mono x) = refl |
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77 functor-law-2 f g (delta x d) = cong (delta (f (g x))) (functor-law-2 f g d) |
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78 |
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79 |
56
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80 |
39 | 81 -- Monad-laws (Category) |
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82 |
39 | 83 -- monad-law-1 : join . fmap join = join . join |
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84 --monad-law-1 : {l : Level} {A : Set l} -> (d : Delta (Delta (Delta A))) -> ((mu ∙ (fmap mu)) d) ≡ ((mu ∙ mu) d) |
29
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85 |
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Proof Monad-law-2-1
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86 |
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87 {- |
39 | 88 -- monad-law-2-2 : join . return = id |
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89 monad-law-2-2 : {l : Level} {A : Set l } -> (s : Delta A) -> (mu ∙ eta) s ≡ id s |
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90 monad-law-2-2 (similar lx x ly y) = refl |
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91 |
39 | 92 -- monad-law-3 : return . f = fmap f . return |
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93 monad-law-3 : {l : Level} {A B : Set l} (f : A -> B) (x : A) -> (eta ∙ f) x ≡ (fmap f ∙ eta) x |
36 | 94 monad-law-3 f x = refl |
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95 |
39 | 96 -- monad-law-4 : join . fmap (fmap f) = fmap f . join |
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97 monad-law-4 : {l ll : Level} {A : Set l} {B : Set ll} (f : A -> B) (s : Delta (Delta A)) -> |
36 | 98 (mu ∙ fmap (fmap f)) s ≡ (fmap f ∙ mu) s |
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99 monad-law-4 f (similar lx (similar llx x _ _) ly (similar _ _ lly y)) = refl |
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100 |
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101 |
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102 -- Monad-laws (Haskell) |
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103 -- monad-law-h-1 : return a >>= k = k a |
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104 monad-law-h-1 : {l ll : Level} {A : Set l} {B : Set ll} -> |
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105 (a : A) -> (k : A -> (Delta B)) -> |
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106 (return a >>= k) ≡ (k a) |
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Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
107 monad-law-h-1 a k = begin |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
108 return a >>= k |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
109 ≡⟨ refl ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
110 mu (fmap k (return a)) |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
111 ≡⟨ refl ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
112 mu (return (k a)) |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
113 ≡⟨ refl ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
114 (mu ∙ return) (k a) |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
115 ≡⟨ refl ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
116 (mu ∙ eta) (k a) |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
117 ≡⟨ (monad-law-2-2 (k a)) ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
118 id (k a) |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
119 ≡⟨ refl ⟩ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
120 k a |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
121 ∎ |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
122 |
a7cd7740f33e
Add Haskell style Monad-laws and Proof Monad-laws-h-1
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
39
diff
changeset
|
123 -- monad-law-h-2 : m >>= return = m |
43
90b171e3a73e
Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
42
diff
changeset
|
124 monad-law-h-2 : {l : Level}{A : Set l} -> (m : Delta A) -> (m >>= return) ≡ m |
41
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
125 monad-law-h-2 (similar lx x ly y) = monad-law-2-1 (similar lx x ly y) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
126 |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
127 -- monad-law-h-3 : m >>= (\x -> k x >>= h) = (m >>= k) >>= h |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
128 monad-law-h-3 : {l ll lll : Level} {A : Set l} {B : Set ll} {C : Set lll} -> |
43
90b171e3a73e
Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
42
diff
changeset
|
129 (m : Delta A) -> (k : A -> (Delta B)) -> (h : B -> (Delta C)) -> |
41
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
130 (m >>= (\x -> k x >>= h)) ≡ ((m >>= k) >>= h) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
131 monad-law-h-3 (similar lx x ly y) k h = begin |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
132 ((similar lx x ly y) >>= (\x -> (k x) >>= h)) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
133 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
134 mu (fmap (\x -> k x >>= h) (similar lx x ly y)) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
135 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
136 (mu ∙ fmap (\x -> k x >>= h)) (similar lx x ly y) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
137 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
138 (mu ∙ fmap (\x -> mu (fmap h (k x)))) (similar lx x ly y) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
139 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
140 (mu ∙ fmap (mu ∙ (\x -> fmap h (k x)))) (similar lx x ly y) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
141 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
142 (mu ∙ (fmap mu ∙ (fmap (\x -> fmap h (k x))))) (similar lx x ly y) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
143 ≡⟨ refl ⟩ |
42
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
144 (mu ∙ (fmap mu)) ((fmap (\x -> fmap h (k x))) (similar lx x ly y)) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
145 ≡⟨ monad-law-1 (((fmap (\x -> fmap h (k x))) (similar lx x ly y))) ⟩ |
43
90b171e3a73e
Rename to Delta from Similar
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
42
diff
changeset
|
146 (mu ∙ mu) ((fmap (\x -> fmap h (k x))) (similar lx x ly y)) |
42
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
147 ≡⟨ refl ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
148 (mu ∙ (mu ∙ (fmap (\x -> fmap h (k x))))) (similar lx x ly y) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
149 ≡⟨ refl ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
150 (mu ∙ (mu ∙ (fmap ((fmap h) ∙ k)))) (similar lx x ly y) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
151 ≡⟨ refl ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
152 (mu ∙ (mu ∙ ((fmap (fmap h)) ∙ (fmap k)))) (similar lx x ly y) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
153 ≡⟨ refl ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
154 (mu ∙ (mu ∙ (fmap (fmap h)))) (fmap k (similar lx x ly y)) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
155 ≡⟨ refl ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
156 mu ((mu ∙ (fmap (fmap h))) (fmap k (similar lx x ly y))) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
157 ≡⟨ cong (\fx -> mu fx) (monad-law-4 h (fmap k (similar lx x ly y))) ⟩ |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
158 mu (fmap h (mu (similar lx (k x) ly (k y)))) |
1df4f9d88025
Proof Monad-law-3 (haskell)
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
41
diff
changeset
|
159 ≡⟨ refl ⟩ |
41
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
160 (mu ∙ fmap h) (mu (fmap k (similar lx x ly y))) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
161 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
162 mu (fmap h (mu (fmap k (similar lx x ly y)))) |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
163 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
164 (mu (fmap k (similar lx x ly y))) >>= h |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
165 ≡⟨ refl ⟩ |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
166 ((similar lx x ly y) >>= k) >>= h |
23474bf242c6
Proof monad-law-h-2, trying monad-law-h-3
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
40
diff
changeset
|
167 ∎ |
57
dfcd72dc697e
ReDefine Delta used non-empty-list for infinite changes
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
56
diff
changeset
|
168 |
dfcd72dc697e
ReDefine Delta used non-empty-list for infinite changes
Yasutaka Higa <e115763@ie.u-ryukyu.ac.jp>
parents:
56
diff
changeset
|
169 -} |