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Theorem splval 14789
Description: Value of the substring replacement operator. (Contributed by Stefan O'Rear, 15-Aug-2015.) (Revised by AV, 11-May-2020.) (Revised by AV, 15-Oct-2022.)
Assertion
Ref Expression
splval ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (𝑆 splice ⟨𝐹, 𝑇, 𝑅⟩) = (((𝑆 prefix 𝐹) ++ 𝑅) ++ (𝑆 substr ⟨𝑇, (♯‘𝑆)⟩)))

Proof of Theorem splval
Dummy variables 𝑠 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-splice 14788 . . 3 splice = (𝑠 ∈ V, 𝑏 ∈ V ↦ (((𝑠 prefix (1st ‘(1st𝑏))) ++ (2nd𝑏)) ++ (𝑠 substr ⟨(2nd ‘(1st𝑏)), (♯‘𝑠)⟩)))
21a1i 11 . 2 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → splice = (𝑠 ∈ V, 𝑏 ∈ V ↦ (((𝑠 prefix (1st ‘(1st𝑏))) ++ (2nd𝑏)) ++ (𝑠 substr ⟨(2nd ‘(1st𝑏)), (♯‘𝑠)⟩))))
3 simprl 771 . . . . 5 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → 𝑠 = 𝑆)
4 2fveq3 6911 . . . . . . 7 (𝑏 = ⟨𝐹, 𝑇, 𝑅⟩ → (1st ‘(1st𝑏)) = (1st ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)))
54adantl 481 . . . . . 6 ((𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩) → (1st ‘(1st𝑏)) = (1st ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)))
6 ot1stg 8028 . . . . . . 7 ((𝐹𝑊𝑇𝑋𝑅𝑌) → (1st ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)) = 𝐹)
76adantl 481 . . . . . 6 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (1st ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)) = 𝐹)
85, 7sylan9eqr 2799 . . . . 5 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (1st ‘(1st𝑏)) = 𝐹)
93, 8oveq12d 7449 . . . 4 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (𝑠 prefix (1st ‘(1st𝑏))) = (𝑆 prefix 𝐹))
10 fveq2 6906 . . . . . 6 (𝑏 = ⟨𝐹, 𝑇, 𝑅⟩ → (2nd𝑏) = (2nd ‘⟨𝐹, 𝑇, 𝑅⟩))
1110adantl 481 . . . . 5 ((𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩) → (2nd𝑏) = (2nd ‘⟨𝐹, 𝑇, 𝑅⟩))
12 ot3rdg 8030 . . . . . . 7 (𝑅𝑌 → (2nd ‘⟨𝐹, 𝑇, 𝑅⟩) = 𝑅)
13123ad2ant3 1136 . . . . . 6 ((𝐹𝑊𝑇𝑋𝑅𝑌) → (2nd ‘⟨𝐹, 𝑇, 𝑅⟩) = 𝑅)
1413adantl 481 . . . . 5 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (2nd ‘⟨𝐹, 𝑇, 𝑅⟩) = 𝑅)
1511, 14sylan9eqr 2799 . . . 4 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (2nd𝑏) = 𝑅)
169, 15oveq12d 7449 . . 3 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → ((𝑠 prefix (1st ‘(1st𝑏))) ++ (2nd𝑏)) = ((𝑆 prefix 𝐹) ++ 𝑅))
17 2fveq3 6911 . . . . . . 7 (𝑏 = ⟨𝐹, 𝑇, 𝑅⟩ → (2nd ‘(1st𝑏)) = (2nd ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)))
1817adantl 481 . . . . . 6 ((𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩) → (2nd ‘(1st𝑏)) = (2nd ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)))
19 ot2ndg 8029 . . . . . . 7 ((𝐹𝑊𝑇𝑋𝑅𝑌) → (2nd ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)) = 𝑇)
2019adantl 481 . . . . . 6 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (2nd ‘(1st ‘⟨𝐹, 𝑇, 𝑅⟩)) = 𝑇)
2118, 20sylan9eqr 2799 . . . . 5 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (2nd ‘(1st𝑏)) = 𝑇)
223fveq2d 6910 . . . . 5 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (♯‘𝑠) = (♯‘𝑆))
2321, 22opeq12d 4881 . . . 4 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → ⟨(2nd ‘(1st𝑏)), (♯‘𝑠)⟩ = ⟨𝑇, (♯‘𝑆)⟩)
243, 23oveq12d 7449 . . 3 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (𝑠 substr ⟨(2nd ‘(1st𝑏)), (♯‘𝑠)⟩) = (𝑆 substr ⟨𝑇, (♯‘𝑆)⟩))
2516, 24oveq12d 7449 . 2 (((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) ∧ (𝑠 = 𝑆𝑏 = ⟨𝐹, 𝑇, 𝑅⟩)) → (((𝑠 prefix (1st ‘(1st𝑏))) ++ (2nd𝑏)) ++ (𝑠 substr ⟨(2nd ‘(1st𝑏)), (♯‘𝑠)⟩)) = (((𝑆 prefix 𝐹) ++ 𝑅) ++ (𝑆 substr ⟨𝑇, (♯‘𝑆)⟩)))
26 elex 3501 . . 3 (𝑆𝑉𝑆 ∈ V)
2726adantr 480 . 2 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → 𝑆 ∈ V)
28 otex 5470 . . 3 𝐹, 𝑇, 𝑅⟩ ∈ V
2928a1i 11 . 2 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → ⟨𝐹, 𝑇, 𝑅⟩ ∈ V)
30 ovexd 7466 . 2 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (((𝑆 prefix 𝐹) ++ 𝑅) ++ (𝑆 substr ⟨𝑇, (♯‘𝑆)⟩)) ∈ V)
312, 25, 27, 29, 30ovmpod 7585 1 ((𝑆𝑉 ∧ (𝐹𝑊𝑇𝑋𝑅𝑌)) → (𝑆 splice ⟨𝐹, 𝑇, 𝑅⟩) = (((𝑆 prefix 𝐹) ++ 𝑅) ++ (𝑆 substr ⟨𝑇, (♯‘𝑆)⟩)))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wa 395  w3a 1087   = wceq 1540  wcel 2108  Vcvv 3480  cop 4632  cotp 4634  cfv 6561  (class class class)co 7431  cmpo 7433  1st c1st 8012  2nd c2nd 8013  chash 14369   ++ cconcat 14608   substr csubstr 14678   prefix cpfx 14708   splice csplice 14787
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432  ax-un 7755
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-sbc 3789  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-nul 4334  df-if 4526  df-sn 4627  df-pr 4629  df-op 4633  df-ot 4635  df-uni 4908  df-br 5144  df-opab 5206  df-mpt 5226  df-id 5578  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-rn 5696  df-iota 6514  df-fun 6563  df-fv 6569  df-ov 7434  df-oprab 7435  df-mpo 7436  df-1st 8014  df-2nd 8015  df-splice 14788
This theorem is referenced by:  splid  14791  spllen  14792  splfv1  14793  splfv2a  14794  splval2  14795  gsumspl  18857  efgredleme  19761  efgredlemc  19763  efgcpbllemb  19773  frgpuplem  19790  splfv3  32943  cycpmco2f1  33144  cycpmco2rn  33145  cycpmco2lem2  33147  cycpmco2lem3  33148  cycpmco2lem4  33149  cycpmco2lem5  33150  cycpmco2lem6  33151  cycpmco2  33153
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