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Theorem clwwlknonclwlknonf1o 30334
Description: 𝐹 is a bijection between the two representations of closed walks of a fixed positive length on a fixed vertex. (Contributed by AV, 26-May-2022.) (Proof shortened by AV, 7-Aug-2022.) (Revised by AV, 1-Nov-2022.)
Hypotheses
Ref Expression
clwwlknonclwlknonf1o.v 𝑉 = (Vtx‘𝐺)
clwwlknonclwlknonf1o.w 𝑊 = {𝑤 ∈ (ClWalks‘𝐺) ∣ ((♯‘(1st𝑤)) = 𝑁 ∧ ((2nd𝑤)‘0) = 𝑋)}
clwwlknonclwlknonf1o.f 𝐹 = (𝑐𝑊 ↦ ((2nd𝑐) prefix (♯‘(1st𝑐))))
Assertion
Ref Expression
clwwlknonclwlknonf1o ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → 𝐹:𝑊1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁))
Distinct variable groups:   𝐺,𝑐,𝑤   𝑁,𝑐,𝑤   𝑉,𝑐   𝑊,𝑐   𝑋,𝑐,𝑤
Allowed substitution hints:   𝐹(𝑤,𝑐)   𝑉(𝑤)   𝑊(𝑤)

Proof of Theorem clwwlknonclwlknonf1o
Dummy variable 𝑠 is distinct from all other variables.
StepHypRef Expression
1 clwwlknonclwlknonf1o.w . . 3 𝑊 = {𝑤 ∈ (ClWalks‘𝐺) ∣ ((♯‘(1st𝑤)) = 𝑁 ∧ ((2nd𝑤)‘0) = 𝑋)}
2 eqid 2731 . . 3 {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} = {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁}
3 clwwlknonclwlknonf1o.f . . 3 𝐹 = (𝑐𝑊 ↦ ((2nd𝑐) prefix (♯‘(1st𝑐))))
4 eqid 2731 . . 3 (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ↦ ((2nd𝑐) prefix (♯‘(1st𝑐)))) = (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ↦ ((2nd𝑐) prefix (♯‘(1st𝑐))))
5 eqid 2731 . . . . 5 (1st𝑐) = (1st𝑐)
6 eqid 2731 . . . . 5 (2nd𝑐) = (2nd𝑐)
75, 6, 2, 4clwlknf1oclwwlkn 30056 . . . 4 ((𝐺 ∈ USPGraph ∧ 𝑁 ∈ ℕ) → (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ↦ ((2nd𝑐) prefix (♯‘(1st𝑐)))):{𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁}–1-1-onto→(𝑁 ClWWalksN 𝐺))
873adant2 1131 . . 3 ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ↦ ((2nd𝑐) prefix (♯‘(1st𝑐)))):{𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁}–1-1-onto→(𝑁 ClWWalksN 𝐺))
9 fveq1 6816 . . . . . . 7 (𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐))) → (𝑠‘0) = (((2nd𝑐) prefix (♯‘(1st𝑐)))‘0))
1093ad2ant3 1135 . . . . . 6 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ∧ 𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐)))) → (𝑠‘0) = (((2nd𝑐) prefix (♯‘(1st𝑐)))‘0))
11 2fveq3 6822 . . . . . . . . . . . 12 (𝑤 = 𝑐 → (♯‘(1st𝑤)) = (♯‘(1st𝑐)))
1211eqeq1d 2733 . . . . . . . . . . 11 (𝑤 = 𝑐 → ((♯‘(1st𝑤)) = 𝑁 ↔ (♯‘(1st𝑐)) = 𝑁))
1312elrab 3642 . . . . . . . . . 10 (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ↔ (𝑐 ∈ (ClWalks‘𝐺) ∧ (♯‘(1st𝑐)) = 𝑁))
14 clwlkwlk 29748 . . . . . . . . . . . 12 (𝑐 ∈ (ClWalks‘𝐺) → 𝑐 ∈ (Walks‘𝐺))
15 wlkcpr 29602 . . . . . . . . . . . . 13 (𝑐 ∈ (Walks‘𝐺) ↔ (1st𝑐)(Walks‘𝐺)(2nd𝑐))
16 eqid 2731 . . . . . . . . . . . . . . . . 17 (Vtx‘𝐺) = (Vtx‘𝐺)
1716wlkpwrd 29591 . . . . . . . . . . . . . . . 16 ((1st𝑐)(Walks‘𝐺)(2nd𝑐) → (2nd𝑐) ∈ Word (Vtx‘𝐺))
18173ad2ant1 1133 . . . . . . . . . . . . . . 15 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → (2nd𝑐) ∈ Word (Vtx‘𝐺))
19 elnnuz 12771 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ ℕ ↔ 𝑁 ∈ (ℤ‘1))
20 eluzfz2 13427 . . . . . . . . . . . . . . . . . . . . 21 (𝑁 ∈ (ℤ‘1) → 𝑁 ∈ (1...𝑁))
2119, 20sylbi 217 . . . . . . . . . . . . . . . . . . . 20 (𝑁 ∈ ℕ → 𝑁 ∈ (1...𝑁))
22 fzelp1 13471 . . . . . . . . . . . . . . . . . . . 20 (𝑁 ∈ (1...𝑁) → 𝑁 ∈ (1...(𝑁 + 1)))
2321, 22syl 17 . . . . . . . . . . . . . . . . . . 19 (𝑁 ∈ ℕ → 𝑁 ∈ (1...(𝑁 + 1)))
24233ad2ant3 1135 . . . . . . . . . . . . . . . . . 18 ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → 𝑁 ∈ (1...(𝑁 + 1)))
25243ad2ant3 1135 . . . . . . . . . . . . . . . . 17 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → 𝑁 ∈ (1...(𝑁 + 1)))
26 id 22 . . . . . . . . . . . . . . . . . . 19 ((♯‘(1st𝑐)) = 𝑁 → (♯‘(1st𝑐)) = 𝑁)
27 oveq1 7348 . . . . . . . . . . . . . . . . . . . 20 ((♯‘(1st𝑐)) = 𝑁 → ((♯‘(1st𝑐)) + 1) = (𝑁 + 1))
2827oveq2d 7357 . . . . . . . . . . . . . . . . . . 19 ((♯‘(1st𝑐)) = 𝑁 → (1...((♯‘(1st𝑐)) + 1)) = (1...(𝑁 + 1)))
2926, 28eleq12d 2825 . . . . . . . . . . . . . . . . . 18 ((♯‘(1st𝑐)) = 𝑁 → ((♯‘(1st𝑐)) ∈ (1...((♯‘(1st𝑐)) + 1)) ↔ 𝑁 ∈ (1...(𝑁 + 1))))
30293ad2ant2 1134 . . . . . . . . . . . . . . . . 17 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → ((♯‘(1st𝑐)) ∈ (1...((♯‘(1st𝑐)) + 1)) ↔ 𝑁 ∈ (1...(𝑁 + 1))))
3125, 30mpbird 257 . . . . . . . . . . . . . . . 16 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → (♯‘(1st𝑐)) ∈ (1...((♯‘(1st𝑐)) + 1)))
32 wlklenvp1 29592 . . . . . . . . . . . . . . . . . . 19 ((1st𝑐)(Walks‘𝐺)(2nd𝑐) → (♯‘(2nd𝑐)) = ((♯‘(1st𝑐)) + 1))
3332oveq2d 7357 . . . . . . . . . . . . . . . . . 18 ((1st𝑐)(Walks‘𝐺)(2nd𝑐) → (1...(♯‘(2nd𝑐))) = (1...((♯‘(1st𝑐)) + 1)))
3433eleq2d 2817 . . . . . . . . . . . . . . . . 17 ((1st𝑐)(Walks‘𝐺)(2nd𝑐) → ((♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐))) ↔ (♯‘(1st𝑐)) ∈ (1...((♯‘(1st𝑐)) + 1))))
35343ad2ant1 1133 . . . . . . . . . . . . . . . 16 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → ((♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐))) ↔ (♯‘(1st𝑐)) ∈ (1...((♯‘(1st𝑐)) + 1))))
3631, 35mpbird 257 . . . . . . . . . . . . . . 15 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐))))
3718, 36jca 511 . . . . . . . . . . . . . 14 (((1st𝑐)(Walks‘𝐺)(2nd𝑐) ∧ (♯‘(1st𝑐)) = 𝑁 ∧ (𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ)) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))))
38373exp 1119 . . . . . . . . . . . . 13 ((1st𝑐)(Walks‘𝐺)(2nd𝑐) → ((♯‘(1st𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))))))
3915, 38sylbi 217 . . . . . . . . . . . 12 (𝑐 ∈ (Walks‘𝐺) → ((♯‘(1st𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))))))
4014, 39syl 17 . . . . . . . . . . 11 (𝑐 ∈ (ClWalks‘𝐺) → ((♯‘(1st𝑐)) = 𝑁 → ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))))))
4140imp 406 . . . . . . . . . 10 ((𝑐 ∈ (ClWalks‘𝐺) ∧ (♯‘(1st𝑐)) = 𝑁) → ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐))))))
4213, 41sylbi 217 . . . . . . . . 9 (𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} → ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐))))))
4342impcom 407 . . . . . . . 8 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁}) → ((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))))
44 pfxfv0 14594 . . . . . . . 8 (((2nd𝑐) ∈ Word (Vtx‘𝐺) ∧ (♯‘(1st𝑐)) ∈ (1...(♯‘(2nd𝑐)))) → (((2nd𝑐) prefix (♯‘(1st𝑐)))‘0) = ((2nd𝑐)‘0))
4543, 44syl 17 . . . . . . 7 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁}) → (((2nd𝑐) prefix (♯‘(1st𝑐)))‘0) = ((2nd𝑐)‘0))
46453adant3 1132 . . . . . 6 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ∧ 𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐)))) → (((2nd𝑐) prefix (♯‘(1st𝑐)))‘0) = ((2nd𝑐)‘0))
4710, 46eqtrd 2766 . . . . 5 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ∧ 𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐)))) → (𝑠‘0) = ((2nd𝑐)‘0))
4847eqeq1d 2733 . . . 4 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ∧ 𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐)))) → ((𝑠‘0) = 𝑋 ↔ ((2nd𝑐)‘0) = 𝑋))
49 nfv 1915 . . . . 5 𝑤((2nd𝑐)‘0) = 𝑋
50 fveq2 6817 . . . . . . 7 (𝑤 = 𝑐 → (2nd𝑤) = (2nd𝑐))
5150fveq1d 6819 . . . . . 6 (𝑤 = 𝑐 → ((2nd𝑤)‘0) = ((2nd𝑐)‘0))
5251eqeq1d 2733 . . . . 5 (𝑤 = 𝑐 → (((2nd𝑤)‘0) = 𝑋 ↔ ((2nd𝑐)‘0) = 𝑋))
5349, 52sbiev 2315 . . . 4 ([𝑐 / 𝑤]((2nd𝑤)‘0) = 𝑋 ↔ ((2nd𝑐)‘0) = 𝑋)
5448, 53bitr4di 289 . . 3 (((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) ∧ 𝑐 ∈ {𝑤 ∈ (ClWalks‘𝐺) ∣ (♯‘(1st𝑤)) = 𝑁} ∧ 𝑠 = ((2nd𝑐) prefix (♯‘(1st𝑐)))) → ((𝑠‘0) = 𝑋 ↔ [𝑐 / 𝑤]((2nd𝑤)‘0) = 𝑋))
551, 2, 3, 4, 8, 54f1ossf1o 7056 . 2 ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → 𝐹:𝑊1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋})
56 clwwlknon 30062 . . 3 (𝑋(ClWWalksNOn‘𝐺)𝑁) = {𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋}
57 f1oeq3 6748 . . 3 ((𝑋(ClWWalksNOn‘𝐺)𝑁) = {𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋} → (𝐹:𝑊1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁) ↔ 𝐹:𝑊1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋}))
5856, 57ax-mp 5 . 2 (𝐹:𝑊1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁) ↔ 𝐹:𝑊1-1-onto→{𝑠 ∈ (𝑁 ClWWalksN 𝐺) ∣ (𝑠‘0) = 𝑋})
5955, 58sylibr 234 1 ((𝐺 ∈ USPGraph ∧ 𝑋𝑉𝑁 ∈ ℕ) → 𝐹:𝑊1-1-onto→(𝑋(ClWWalksNOn‘𝐺)𝑁))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395  w3a 1086   = wceq 1541  [wsb 2067  wcel 2111  {crab 3395   class class class wbr 5086  cmpt 5167  1-1-ontowf1o 6475  cfv 6476  (class class class)co 7341  1st c1st 7914  2nd c2nd 7915  0cc0 11001  1c1 11002   + caddc 11004  cn 12120  cuz 12727  ...cfz 13402  chash 14232  Word cword 14415   prefix cpfx 14573  Vtxcvtx 28969  USPGraphcuspgr 29121  Walkscwlks 29570  ClWalkscclwlks 29743   ClWWalksN cclwwlkn 29996  ClWWalksNOncclwwlknon 30059
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2113  ax-9 2121  ax-10 2144  ax-11 2160  ax-12 2180  ax-ext 2703  ax-rep 5212  ax-sep 5229  ax-nul 5239  ax-pow 5298  ax-pr 5365  ax-un 7663  ax-cnex 11057  ax-resscn 11058  ax-1cn 11059  ax-icn 11060  ax-addcl 11061  ax-addrcl 11062  ax-mulcl 11063  ax-mulrcl 11064  ax-mulcom 11065  ax-addass 11066  ax-mulass 11067  ax-distr 11068  ax-i2m1 11069  ax-1ne0 11070  ax-1rid 11071  ax-rnegex 11072  ax-rrecex 11073  ax-cnre 11074  ax-pre-lttri 11075  ax-pre-lttrn 11076  ax-pre-ltadd 11077  ax-pre-mulgt0 11078
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-ifp 1063  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2535  df-eu 2564  df-clab 2710  df-cleq 2723  df-clel 2806  df-nfc 2881  df-ne 2929  df-nel 3033  df-ral 3048  df-rex 3057  df-reu 3347  df-rab 3396  df-v 3438  df-sbc 3737  df-csb 3846  df-dif 3900  df-un 3902  df-in 3904  df-ss 3914  df-pss 3917  df-nul 4279  df-if 4471  df-pw 4547  df-sn 4572  df-pr 4574  df-op 4578  df-uni 4855  df-int 4893  df-iun 4938  df-br 5087  df-opab 5149  df-mpt 5168  df-tr 5194  df-id 5506  df-eprel 5511  df-po 5519  df-so 5520  df-fr 5564  df-we 5566  df-xp 5617  df-rel 5618  df-cnv 5619  df-co 5620  df-dm 5621  df-rn 5622  df-res 5623  df-ima 5624  df-pred 6243  df-ord 6304  df-on 6305  df-lim 6306  df-suc 6307  df-iota 6432  df-fun 6478  df-fn 6479  df-f 6480  df-f1 6481  df-fo 6482  df-f1o 6483  df-fv 6484  df-riota 7298  df-ov 7344  df-oprab 7345  df-mpo 7346  df-om 7792  df-1st 7916  df-2nd 7917  df-frecs 8206  df-wrecs 8237  df-recs 8286  df-rdg 8324  df-1o 8380  df-2o 8381  df-oadd 8384  df-er 8617  df-map 8747  df-pm 8748  df-en 8865  df-dom 8866  df-sdom 8867  df-fin 8868  df-dju 9789  df-card 9827  df-pnf 11143  df-mnf 11144  df-xr 11145  df-ltxr 11146  df-le 11147  df-sub 11341  df-neg 11342  df-nn 12121  df-2 12183  df-n0 12377  df-xnn0 12450  df-z 12464  df-uz 12728  df-rp 12886  df-fz 13403  df-fzo 13550  df-hash 14233  df-word 14416  df-lsw 14465  df-concat 14473  df-s1 14499  df-substr 14544  df-pfx 14574  df-edg 29021  df-uhgr 29031  df-upgr 29055  df-uspgr 29123  df-wlks 29573  df-clwlks 29744  df-clwwlk 29954  df-clwwlkn 29997  df-clwwlknon 30060
This theorem is referenced by:  clwwlknonclwlknonen  30335  dlwwlknondlwlknonf1o  30337
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