Step | Hyp | Ref
| Expression |
1 | | clwwlknonclwlknonf1oOLD.w |
. . 3
⊢ 𝑊 = {𝑤 ∈ (ClWalks‘𝐺) ∣ ((♯‘(1st
‘𝑤)) = 𝑁 ∧ ((2nd
‘𝑤)‘0) = 𝑋)} |
2 | | eqid 2778 |
. . 3
⊢ {𝑤 ∈ (ClWalks‘𝐺) ∣
(♯‘(1st ‘𝑤)) = 𝑁} = {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} |
3 | | clwwlknonclwlknonf1oOLD.f |
. . 3
⊢ 𝐹 = (𝑐 ∈ 𝑊 ↦ ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) |
4 | | eqid 2778 |
. . 3
⊢ (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ↦ ((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) = (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ↦ ((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) |
5 | | eqid 2778 |
. . . . 5
⊢
(1st ‘𝑐) = (1st ‘𝑐) |
6 | | eqid 2778 |
. . . . 5
⊢
(2nd ‘𝑐) = (2nd ‘𝑐) |
7 | 5, 6, 2, 4 | clwlknf1oclwwlknOLD 27489 |
. . . 4
⊢ ((𝐺 ∈ USPGraph ∧ 𝑁 ∈ ℕ) → (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ↦ ((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)):{𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁}–1-1-onto→(𝑁 ClWWalksN 𝐺)) |
8 | 7 | 3adant2 1122 |
. . 3
⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ↦ ((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)):{𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁}–1-1-onto→(𝑁 ClWWalksN 𝐺)) |
9 | | fveq1 6447 |
. . . . . . 7
⊢ (𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉) → (𝑠‘0) = (((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)‘0)) |
10 | 9 | 3ad2ant3 1126 |
. . . . . 6
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ∧ 𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) → (𝑠‘0) = (((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)‘0)) |
11 | | 2fveq3 6453 |
. . . . . . . . . . . 12
⊢ (𝑤 = 𝑐 → (♯‘(1st
‘𝑤)) =
(♯‘(1st ‘𝑐))) |
12 | 11 | eqeq1d 2780 |
. . . . . . . . . . 11
⊢ (𝑤 = 𝑐 → ((♯‘(1st
‘𝑤)) = 𝑁 ↔
(♯‘(1st ‘𝑐)) = 𝑁)) |
13 | 12 | elrab 3572 |
. . . . . . . . . 10
⊢ (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ↔ (𝑐 ∈ (ClWalks‘𝐺) ∧ (♯‘(1st
‘𝑐)) = 𝑁)) |
14 | | clwlkwlk 27131 |
. . . . . . . . . . . 12
⊢ (𝑐 ∈ (ClWalks‘𝐺) → 𝑐 ∈ (Walks‘𝐺)) |
15 | | wlkcpr 26980 |
. . . . . . . . . . . . 13
⊢ (𝑐 ∈ (Walks‘𝐺) ↔ (1st
‘𝑐)(Walks‘𝐺)(2nd ‘𝑐)) |
16 | | eqid 2778 |
. . . . . . . . . . . . . . . . 17
⊢
(Vtx‘𝐺) =
(Vtx‘𝐺) |
17 | 16 | wlkpwrd 26969 |
. . . . . . . . . . . . . . . 16
⊢
((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) → (2nd ‘𝑐) ∈ Word (Vtx‘𝐺)) |
18 | 17 | 3ad2ant1 1124 |
. . . . . . . . . . . . . . 15
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) → (2nd
‘𝑐) ∈ Word
(Vtx‘𝐺)) |
19 | | elnnuz 12034 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑁 ∈ ℕ ↔ 𝑁 ∈
(ℤ≥‘1)) |
20 | | eluzfz2 12670 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑁 ∈
(ℤ≥‘1) → 𝑁 ∈ (1...𝑁)) |
21 | 19, 20 | sylbi 209 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑁 ∈ ℕ → 𝑁 ∈ (1...𝑁)) |
22 | | fzelp1 12714 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑁 ∈ (1...𝑁) → 𝑁 ∈ (1...(𝑁 + 1))) |
23 | 21, 22 | syl 17 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑁 ∈ ℕ → 𝑁 ∈ (1...(𝑁 + 1))) |
24 | 23 | 3ad2ant3 1126 |
. . . . . . . . . . . . . . . . . 18
⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → 𝑁 ∈ (1...(𝑁 + 1))) |
25 | 24 | 3ad2ant3 1126 |
. . . . . . . . . . . . . . . . 17
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) → 𝑁 ∈ (1...(𝑁 + 1))) |
26 | | id 22 |
. . . . . . . . . . . . . . . . . . 19
⊢
((♯‘(1st ‘𝑐)) = 𝑁 → (♯‘(1st
‘𝑐)) = 𝑁) |
27 | | oveq1 6931 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((♯‘(1st ‘𝑐)) = 𝑁 → ((♯‘(1st
‘𝑐)) + 1) = (𝑁 + 1)) |
28 | 27 | oveq2d 6940 |
. . . . . . . . . . . . . . . . . . 19
⊢
((♯‘(1st ‘𝑐)) = 𝑁 → (1...((♯‘(1st
‘𝑐)) + 1)) =
(1...(𝑁 +
1))) |
29 | 26, 28 | eleq12d 2853 |
. . . . . . . . . . . . . . . . . 18
⊢
((♯‘(1st ‘𝑐)) = 𝑁 → ((♯‘(1st
‘𝑐)) ∈
(1...((♯‘(1st ‘𝑐)) + 1)) ↔ 𝑁 ∈ (1...(𝑁 + 1)))) |
30 | 29 | 3ad2ant2 1125 |
. . . . . . . . . . . . . . . . 17
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) →
((♯‘(1st ‘𝑐)) ∈
(1...((♯‘(1st ‘𝑐)) + 1)) ↔ 𝑁 ∈ (1...(𝑁 + 1)))) |
31 | 25, 30 | mpbird 249 |
. . . . . . . . . . . . . . . 16
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) →
(♯‘(1st ‘𝑐)) ∈
(1...((♯‘(1st ‘𝑐)) + 1))) |
32 | | wlklenvp1 26970 |
. . . . . . . . . . . . . . . . . . 19
⊢
((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) → (♯‘(2nd
‘𝑐)) =
((♯‘(1st ‘𝑐)) + 1)) |
33 | 32 | oveq2d 6940 |
. . . . . . . . . . . . . . . . . 18
⊢
((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) → (1...(♯‘(2nd
‘𝑐))) =
(1...((♯‘(1st ‘𝑐)) + 1))) |
34 | 33 | eleq2d 2845 |
. . . . . . . . . . . . . . . . 17
⊢
((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) → ((♯‘(1st
‘𝑐)) ∈
(1...(♯‘(2nd ‘𝑐))) ↔ (♯‘(1st
‘𝑐)) ∈
(1...((♯‘(1st ‘𝑐)) + 1)))) |
35 | 34 | 3ad2ant1 1124 |
. . . . . . . . . . . . . . . 16
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) →
((♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))) ↔
(♯‘(1st ‘𝑐)) ∈
(1...((♯‘(1st ‘𝑐)) + 1)))) |
36 | 31, 35 | mpbird 249 |
. . . . . . . . . . . . . . 15
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) →
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐)))) |
37 | 18, 36 | jca 507 |
. . . . . . . . . . . . . 14
⊢
(((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) ∧ (♯‘(1st
‘𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ)) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))))) |
38 | 37 | 3exp 1109 |
. . . . . . . . . . . . 13
⊢
((1st ‘𝑐)(Walks‘𝐺)(2nd ‘𝑐) → ((♯‘(1st
‘𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))))))) |
39 | 15, 38 | sylbi 209 |
. . . . . . . . . . . 12
⊢ (𝑐 ∈ (Walks‘𝐺) →
((♯‘(1st ‘𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))))))) |
40 | 14, 39 | syl 17 |
. . . . . . . . . . 11
⊢ (𝑐 ∈ (ClWalks‘𝐺) →
((♯‘(1st ‘𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))))))) |
41 | 40 | imp 397 |
. . . . . . . . . 10
⊢ ((𝑐 ∈ (ClWalks‘𝐺) ∧
(♯‘(1st ‘𝑐)) = 𝑁) → ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐)))))) |
42 | 13, 41 | sylbi 209 |
. . . . . . . . 9
⊢ (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} → ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐)))))) |
43 | 42 | impcom 398 |
. . . . . . . 8
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁}) → ((2nd
‘𝑐) ∈ Word
(Vtx‘𝐺) ∧
(♯‘(1st ‘𝑐)) ∈ (1...(♯‘(2nd
‘𝑐))))) |
44 | | swrd0fv0OLD 13763 |
. . . . . . . 8
⊢
(((2nd ‘𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st
‘𝑐)) ∈
(1...(♯‘(2nd ‘𝑐)))) → (((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)‘0) = ((2nd
‘𝑐)‘0)) |
45 | 43, 44 | syl 17 |
. . . . . . 7
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁}) → (((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)‘0) = ((2nd
‘𝑐)‘0)) |
46 | 45 | 3adant3 1123 |
. . . . . 6
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ∧ 𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) → (((2nd
‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)‘0) = ((2nd
‘𝑐)‘0)) |
47 | 10, 46 | eqtrd 2814 |
. . . . 5
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ∧ 𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) → (𝑠‘0) = ((2nd ‘𝑐)‘0)) |
48 | 47 | eqeq1d 2780 |
. . . 4
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ∧ 𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) → ((𝑠‘0) = 𝑋 ↔ ((2nd ‘𝑐)‘0) = 𝑋)) |
49 | | nfv 1957 |
. . . . 5
⊢
Ⅎ𝑤((2nd ‘𝑐)‘0) = 𝑋 |
50 | | fveq2 6448 |
. . . . . . 7
⊢ (𝑤 = 𝑐 → (2nd ‘𝑤) = (2nd ‘𝑐)) |
51 | 50 | fveq1d 6450 |
. . . . . 6
⊢ (𝑤 = 𝑐 → ((2nd ‘𝑤)‘0) = ((2nd
‘𝑐)‘0)) |
52 | 51 | eqeq1d 2780 |
. . . . 5
⊢ (𝑤 = 𝑐 → (((2nd ‘𝑤)‘0) = 𝑋 ↔ ((2nd ‘𝑐)‘0) = 𝑋)) |
53 | 49, 52 | sbie 2484 |
. . . 4
⊢ ([𝑐 / 𝑤]((2nd ‘𝑤)‘0) = 𝑋 ↔ ((2nd ‘𝑐)‘0) = 𝑋) |
54 | 48, 53 | syl6bbr 281 |
. . 3
⊢ (((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st
‘𝑤)) = 𝑁} ∧ 𝑠 = ((2nd ‘𝑐) substr 〈0,
(♯‘(1st ‘𝑐))〉)) → ((𝑠‘0) = 𝑋 ↔ [𝑐 / 𝑤]((2nd ‘𝑤)‘0) = 𝑋)) |
55 | 1, 2, 3, 4, 8, 54 | f1ossf1o 6662 |
. 2
⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → 𝐹:𝑊–1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋}) |
56 | | clwwlknon 27496 |
. . 3
⊢ (𝑋(ClWWalksNOn‘𝐺)𝑁) = {𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋} |
57 | | f1oeq3 6384 |
. . 3
⊢ ((𝑋(ClWWalksNOn‘𝐺)𝑁) = {𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋} → (𝐹:𝑊–1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁) ↔ 𝐹:𝑊–1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋})) |
58 | 56, 57 | ax-mp 5 |
. 2
⊢ (𝐹:𝑊–1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁) ↔ 𝐹:𝑊–1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋}) |
59 | 55, 58 | sylibr 226 |
1
⊢ ((𝐺 ∈ USPGraph ∧ 𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → 𝐹:𝑊–1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁)) |