Mercurial > hg > Members > kono > Proof > ZF-in-agda
annotate constructible-set.agda @ 16:ac362cc8b10f
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Tue, 14 May 2019 12:53:52 +0900 |
parents | 497152f625ee |
children | 6a668c6086a5 |
rev | line source |
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16 | 1 open import Level |
2 module constructible-set (n : Level) where | |
3 | 3 |
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4 open import zf |
3 | 5 |
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6 open import Data.Nat renaming ( zero to Zero ; suc to Suc ; ℕ to Nat ) |
3 | 7 |
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8 open import Relation.Binary.PropositionalEquality |
3 | 9 |
16 | 10 data OridinalD : (lv : Nat) → Set n where |
11 Φ : {lv : Nat} → OridinalD lv | |
12 OSuc : {lv : Nat} → OridinalD lv → OridinalD lv | |
13 ℵ_ : (lv : Nat) → OridinalD (Suc lv) | |
3 | 14 |
16 | 15 record Ordinal : Set n where |
16 field | |
17 lv : Nat | |
18 ord : OridinalD lv | |
19 | |
20 data _o<_ : {lx ly : Nat} → OridinalD lx → OridinalD ly → Set n where | |
21 l< : {lx ly : Nat } → {x : OridinalD lx } → {y : OridinalD ly } → lx < ly → x o< y | |
22 Φ< : {lx : Nat} → {x : OridinalD lx} → Φ {lx} o< OSuc {lx} x | |
23 s< : {lx : Nat} → {x y : OridinalD lx} → x o< y → OSuc {lx} x o< OSuc {lx} y | |
24 ℵΦ< : {lx : Nat} → {x : OridinalD (Suc lx) } → Φ {Suc lx} o< (ℵ lx) | |
25 ℵ< : {lx : Nat} → {x : OridinalD (Suc lx) } → OSuc {Suc lx} x o< (ℵ lx) | |
3 | 26 |
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27 open import Data.Nat.Properties |
6 | 28 open import Data.Empty |
29 open import Relation.Nullary | |
30 | |
31 open import Relation.Binary | |
32 open import Relation.Binary.Core | |
33 | |
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34 |
16 | 35 ≡→¬< : { x y : Nat } → x ≡ y → x < y → ⊥ |
36 ≡→¬< {Zero} {Zero} refl () | |
37 ≡→¬< {Suc x} {.(Suc x)} refl (s≤s t) = ≡→¬< {x} {x} refl t | |
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38 |
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39 x≤x : { x : Nat } → x ≤ x |
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40 x≤x {Zero} = z≤n |
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41 x≤x {Suc x} = s≤s ( x≤x ) |
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42 |
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43 x<>y : { x y : Nat } → x > y → x < y → ⊥ |
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44 x<>y {.(Suc _)} {.(Suc _)} (s≤s lt) (s≤s lt1) = x<>y lt lt1 |
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45 |
16 | 46 triO> : {lx ly : Nat} {x : OridinalD lx } { y : OridinalD ly } → ly < lx → x o< y → ⊥ |
47 triO> {lx} {ly} {x} {y} y<x xo<y with <-cmp lx ly | |
48 triO> {lx} {ly} {x} {y} y<x xo<y | tri< a ¬b ¬c = ¬c y<x | |
49 triO> {lx} {ly} {x} {y} y<x xo<y | tri≈ ¬a b ¬c = ¬c y<x | |
50 triO> {lx} {ly} {x} {y} y<x (l< x₁) | tri> ¬a ¬b c = ¬a x₁ | |
51 triO> {lx} {ly} {Φ} {OSuc _} y<x Φ< | tri> ¬a ¬b c = ¬b refl | |
52 triO> {lx} {ly} {OSuc px} {OSuc py} y<x (s< w) | tri> ¬a ¬b c = triO> y<x w | |
53 triO> {lx} {ly} {Φ {u}} {ℵ w} y<x ℵΦ< | tri> ¬a ¬b c = ¬b refl | |
54 triO> {lx} {ly} {(OSuc _)} {ℵ u} y<x ℵ< | tri> ¬a ¬b c = ¬b refl | |
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55 |
16 | 56 ≡→¬o< : {lv : Nat} → {x : OridinalD lv } → x o< x → ⊥ |
57 ≡→¬o< {lx} {x} (l< y) = ≡→¬< refl y | |
58 ≡→¬o< {lx} {OSuc y} (s< t) = ≡→¬o< t | |
3 | 59 |
16 | 60 trio<> : {lx : Nat} {x : OridinalD lx } { y : OridinalD lx } → y o< x → x o< y → ⊥ |
61 trio<> {lx} {x} {y} (l< lt) _ = ≡→¬< refl lt | |
62 trio<> {lx} {x} {y} _ (l< lt) = ≡→¬< refl lt | |
63 trio<> {lx} {.(OSuc _)} {.(OSuc _)} (s< s) (s< t) = | |
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64 trio<> s t |
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65 |
16 | 66 trio<≡ : {lx : Nat} {x : OridinalD lx } { y : OridinalD lx } → x ≡ y → x o< y → ⊥ |
67 trio<≡ refl = ≡→¬o< | |
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68 |
16 | 69 trio>≡ : {lx : Nat} {x : OridinalD lx } { y : OridinalD lx } → x ≡ y → y o< x → ⊥ |
70 trio>≡ refl = ≡→¬o< | |
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71 |
16 | 72 triO : {lx ly : Nat} → OridinalD lx → OridinalD ly → Tri (lx < ly) ( lx ≡ ly ) ( lx > ly ) |
73 triO {lx} {ly} x y = <-cmp lx ly | |
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74 |
16 | 75 triOonSameLevel : {lx : Nat} → Trichotomous _≡_ ( _o<_ {lx} {lx} ) |
76 triOonSameLevel {lv} Φ Φ = tri≈ ≡→¬o< refl ≡→¬o< | |
77 triOonSameLevel {Suc lv} (ℵ lv) (ℵ lv) = tri≈ ≡→¬o< refl ≡→¬o< | |
78 triOonSameLevel {lv} Φ (OSuc y) = tri< Φ< (λ ()) ( λ lt → trio<> lt Φ< ) | |
79 triOonSameLevel {.(Suc lv)} Φ (ℵ lv) = tri< (ℵΦ< {lv} {Φ} ) (λ ()) ( λ lt → trio<> lt ((ℵΦ< {lv} {Φ} )) ) | |
80 triOonSameLevel {Suc lv} (ℵ lv) Φ = tri> ( λ lt → trio<> lt (ℵΦ< {lv} {Φ} ) ) (λ ()) (ℵΦ< {lv} {Φ} ) | |
81 triOonSameLevel {Suc lv} (ℵ lv) (OSuc y) = tri> ( λ lt → trio<> lt (ℵ< {lv} {y} ) ) (λ ()) (ℵ< {lv} {y} ) | |
82 triOonSameLevel {lv} (OSuc x) Φ = tri> (λ lt → trio<> lt Φ<) (λ ()) Φ< | |
83 triOonSameLevel {.(Suc lv)} (OSuc x) (ℵ lv) = tri< ℵ< (λ ()) (λ lt → trio<> lt ℵ< ) | |
84 triOonSameLevel {lv} (OSuc x) (OSuc y) with triOonSameLevel x y | |
85 triOonSameLevel {lv} (OSuc x) (OSuc y) | tri< a ¬b ¬c = tri< (s< a) (λ tx=ty → trio<≡ tx=ty (s< a) ) ( λ lt → trio<> lt (s< a) ) | |
86 triOonSameLevel {lv} (OSuc x) (OSuc x) | tri≈ ¬a refl ¬c = tri≈ ≡→¬o< refl ≡→¬o< | |
87 triOonSameLevel {lv} (OSuc x) (OSuc y) | tri> ¬a ¬b c = tri> ( λ lt → trio<> lt (s< c) ) (λ tx=ty → trio>≡ tx=ty (s< c) ) (s< c) | |
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88 |
16 | 89 <→≤ : {lx ly : Nat} → lx < ly → (Suc lx ≤ ly) |
90 <→≤ {Zero} {Suc ly} (s≤s lt) = s≤s z≤n | |
91 <→≤ {Suc lx} {Zero} () | |
92 <→≤ {Suc lx} {Suc ly} (s≤s lt) = s≤s (<→≤ lt) | |
93 | |
94 orddtrans : {lx ly lz : Nat} {x : OridinalD lx } { y : OridinalD ly } { z : OridinalD lz } → x o< y → y o< z → x o< z | |
95 orddtrans {lx} {ly} {lz} x<y y<z with <-cmp lx ly | <-cmp ly lz | |
96 orddtrans {lx} {ly} {lz} x<y y<z | tri< a ¬b ¬c | tri< a₁ ¬b₁ ¬c₁ = l< ( <-trans a a₁ ) | |
97 orddtrans {lx} {ly} {lz} x<y y<z | tri< a ¬b ¬c | tri≈ ¬a refl ¬c₁ = l< a | |
98 orddtrans {lx} {ly} {lz} x<y y<z | tri< a ¬b ¬c | tri> ¬a ¬b₁ c = l< {!!} -- ⊥-elim ( ¬a c ) | |
99 orddtrans {lx} {ly} {lz} x<y y<z | tri> ¬a ¬b c | tri< a ¬b₁ ¬c = l< {!!} | |
100 orddtrans {lx} {ly} {lz} x<y y<z | tri> ¬a ¬b c | tri≈ ¬a₁ refl ¬c = l< {!!} | |
101 orddtrans {lx} {ly} {lz} x<y y<z | tri> ¬a ¬b c | tri> ¬a₁ ¬b₁ c₁ = {!!} | |
102 orddtrans {lx} {ly} {lz} x<y y<z | tri≈ ¬a refl ¬c | tri< a ¬b ¬c₁ = l< a | |
103 orddtrans {lx} {ly} {lz} x<y y<z | tri≈ ¬a refl ¬c | tri> ¬a₁ ¬b c = l< {!!} | |
104 orddtrans {lx} {lx} {lx} x<y y<z | tri≈ ¬a refl ¬c | tri≈ ¬a₁ refl ¬c₁ = orddtrans1 x<y y<z where | |
105 orddtrans1 : {lx : Nat} {x y z : OridinalD lx } → x o< y → y o< z → x o< z | |
106 orddtrans1 = {!!} | |
107 | |
108 | |
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109 |
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110 max : (x y : Nat) → Nat |
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111 max Zero Zero = Zero |
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112 max Zero (Suc x) = (Suc x) |
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113 max (Suc x) Zero = (Suc x) |
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114 max (Suc x) (Suc y) = Suc ( max x y ) |
3 | 115 |
16 | 116 -- use cannot use OridinalD (Data.Nat_⊔_ lx ly), I don't know why |
117 | |
118 maxα> : { lx ly : Nat } → OridinalD lx → OridinalD ly → lx > ly → OridinalD lx | |
15 | 119 maxα> x y _ = x |
6 | 120 |
16 | 121 maxα= : { lx : Nat } → OridinalD lx → OridinalD lx → OridinalD lx |
15 | 122 maxα= x y with triOonSameLevel x y |
123 maxα= x y | tri< a ¬b ¬c = y | |
124 maxα= x y | tri≈ ¬a b ¬c = x | |
125 maxα= x y | tri> ¬a ¬b c = x | |
7 | 126 |
16 | 127 OrdTrans : Transitive (λ ( a b : Ordinal ) → (a ≡ b) ∨ (Ordinal.lv a < Ordinal.lv b) ∨ (Ordinal.ord a o< Ordinal.ord b) ) |
128 OrdTrans (case1 refl) (case1 refl) = case1 refl | |
129 OrdTrans (case1 refl) (case2 lt2) = case2 lt2 | |
130 OrdTrans (case2 lt1) (case1 refl) = case2 lt1 | |
131 OrdTrans (case2 (case1 x)) (case2 (case1 y)) = case2 ( case1 ( <-trans x y ) ) | |
132 OrdTrans (case2 (case1 x)) (case2 (case2 y)) = case2 {!!} | |
133 OrdTrans (case2 (case2 x)) (case2 (case1 y)) = case2 {!!} | |
134 OrdTrans (case2 (case2 x)) (case2 (case2 y)) = case2 {!!} | |
135 | |
136 OrdPreorder : Preorder n n n | |
137 OrdPreorder = record { Carrier = Ordinal | |
138 ; _≈_ = _≡_ | |
139 ; _∼_ = λ a b → (a ≡ b) ∨ (Ordinal.lv a < Ordinal.lv b) ∨ (Ordinal.ord a o< Ordinal.ord b ) | |
140 ; isPreorder = record { | |
141 isEquivalence = record { refl = refl ; sym = sym ; trans = trans } | |
142 ; reflexive = case1 | |
143 ; trans = OrdTrans | |
144 } | |
145 } | |
146 | |
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147 -- X' = { x ∈ X | ψ x } ∪ X , Mα = ( ∪ (β < α) Mβ ) ' |
7 | 148 |
16 | 149 data Constructible {lv : Nat} ( α : OridinalD lv ) : Set (suc n) where |
150 fsub : ( ψ : OridinalD lv → Set n ) → Constructible α | |
151 xself : OridinalD lv → Constructible α | |
11 | 152 |
16 | 153 record ConstructibleSet : Set (suc n) where |
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154 field |
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155 level : Nat |
16 | 156 α : OridinalD level |
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157 constructible : Constructible α |
11 | 158 |
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159 open ConstructibleSet |
11 | 160 |
16 | 161 data _c∋_ : {lv lv' : Nat} {α : OridinalD lv } {α' : OridinalD lv' } → |
162 Constructible {lv} α → Constructible {lv'} α' → Set n where | |
163 c> : {lv lv' : Nat} {α : OridinalD lv } {α' : OridinalD lv' } | |
164 (ta : Constructible {lv} α ) ( tx : Constructible {lv'} α' ) → α' o< α → ta c∋ tx | |
165 xself-fsub : {lv : Nat} {α : OridinalD lv } | |
166 (ta : OridinalD lv ) ( ψ : OridinalD lv → Set n ) → _c∋_ {_} {_} {α} {α} (xself ta ) ( fsub ψ) | |
167 fsub-fsub : {lv lv' : Nat} {α : OridinalD lv } | |
168 ( ψ : OridinalD lv → Set n ) ( ψ₁ : OridinalD lv → Set n ) → | |
169 ( ∀ ( x : OridinalD lv ) → ψ x → ψ₁ x ) → _c∋_ {_} {_} {α} {α} ( fsub ψ ) ( fsub ψ₁) | |
7 | 170 |
16 | 171 _∋_ : (ConstructibleSet ) → (ConstructibleSet ) → Set n |
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172 a ∋ x = constructible a c∋ constructible x |
11 | 173 |
16 | 174 transitiveness : (a b c : ConstructibleSet ) → a ∋ b → b ∋ c → a ∋ c |
175 transitiveness a b c a∋b b∋c with constructible a c∋ constructible b | constructible b c∋ constructible c | |
176 ... | t1 | t2 = {!!} | |
15 | 177 |
16 | 178 data _c≈_ : {lv lv' : Nat} {α : OridinalD lv } {α' : OridinalD lv' } → |
179 Constructible {lv} α → Constructible {lv'} α' → Set n where | |
180 crefl : {lv : Nat} {α : OridinalD lv } → _c≈_ {_} {_} {α} {α} (xself α ) (xself α ) | |
181 feq : {lv : Nat} {α : OridinalD lv } | |
182 → ( ψ : OridinalD lv → Set n ) ( ψ₁ : OridinalD lv → Set n ) | |
183 → (∀ ( x : OridinalD lv ) → ψ x ⇔ ψ₁ x ) → _c≈_ {_} {_} {α} {α} ( fsub ψ ) ( fsub ψ₁) | |
11 | 184 |
16 | 185 _≈_ : (ConstructibleSet ) → (ConstructibleSet ) → Set n |
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186 a ≈ x = constructible a c≈ constructible x |
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187 |
16 | 188 ConstructibleSet→ZF : ZF {suc n} |
189 ConstructibleSet→ZF = record { | |
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190 ZFSet = ConstructibleSet |
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191 ; _∋_ = _∋_ |
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192 ; _≈_ = _≈_ |
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193 ; ∅ = record { level = Zero ; α = Φ ; constructible = xself Φ } |
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194 ; _×_ = {!!} |
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195 ; Union = {!!} |
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196 ; Power = {!!} |
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197 ; Select = {!!} |
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198 ; Replace = {!!} |
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199 ; infinite = {!!} |
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200 ; isZF = {!!} |
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201 } |