Theorem numclwlk2lem2fv 28721

Description: Value of the function 𝑅. (Contributed by Alexander van der Vekens, 6-Oct-2018.) (Revised by AV, 31-May-2021.) (Revised by AV, 1-Nov-2022.)

Hypotheses

Ref	Expression
numclwwlk.v	⊢ 𝑉 = (Vtx‘𝐺)
numclwwlk.q	⊢ 𝑄 = (𝑣 ∈ 𝑉, 𝑛 ∈ ℕ ↦ {𝑤 ∈ (𝑛 WWalksN 𝐺) ∣ ((𝑤‘0) = 𝑣 ∧ (lastS‘𝑤) ≠ 𝑣)})
numclwwlk.h	⊢ 𝐻 = (𝑣 ∈ 𝑉, 𝑛 ∈ (ℤ≥‘2) ↦ {𝑤 ∈ (𝑣(ClWWalksNOn‘𝐺)𝑛) ∣ (𝑤‘(𝑛 − 2)) ≠ 𝑣})
numclwwlk.r	⊢ 𝑅 = (𝑥 ∈ (𝑋𝐻(𝑁 + 2)) ↦ (𝑥 prefix (𝑁 + 1)))

Assertion

Ref	Expression
numclwlk2lem2fv	⊢ ((𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → (𝑊 ∈ (𝑋𝐻(𝑁 + 2)) → (𝑅‘𝑊) = (𝑊 prefix (𝑁 + 1))))

Distinct variable groups:   𝑛,𝐺,𝑣,𝑤   𝑛,𝑁,𝑣,𝑤   𝑛,𝑉,𝑣   𝑛,𝑋,𝑣,𝑤   𝑤,𝑉   𝑣,𝑊,𝑤   𝑥,𝐺,𝑤   𝑥,𝐻   𝑥,𝑁   𝑥,𝑄   𝑥,𝑉   𝑥,𝑋   𝑥,𝑊

Allowed substitution hints:   𝑄(𝑤,𝑣,𝑛)   𝑅(𝑥,𝑤,𝑣,𝑛)   𝐻(𝑤,𝑣,𝑛)   𝑊(𝑛)

Proof of Theorem numclwlk2lem2fv

Step	Hyp	Ref	Expression
1		numclwwlk.r	. . 3 ⊢ 𝑅 = (𝑥 ∈ (𝑋𝐻(𝑁 + 2)) ↦ (𝑥 prefix (𝑁 + 1)))
2		oveq1 7275	. . 3 ⊢ (𝑥 = 𝑊 → (𝑥 prefix (𝑁 + 1)) = (𝑊 prefix (𝑁 + 1)))
3		simpr 484	. . 3 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑊 ∈ (𝑋𝐻(𝑁 + 2))) → 𝑊 ∈ (𝑋𝐻(𝑁 + 2)))
4		ovexd 7303	. . 3 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑊 ∈ (𝑋𝐻(𝑁 + 2))) → (𝑊 prefix (𝑁 + 1)) ∈ V)
5	1, 2, 3, 4	fvmptd3 6892	. 2 ⊢ (((𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) ∧ 𝑊 ∈ (𝑋𝐻(𝑁 + 2))) → (𝑅‘𝑊) = (𝑊 prefix (𝑁 + 1)))
6	5	ex 412	1 ⊢ ((𝑋 ∈ 𝑉 ∧ 𝑁 ∈ ℕ) → (𝑊 ∈ (𝑋𝐻(𝑁 + 2)) → (𝑅‘𝑊) = (𝑊 prefix (𝑁 + 1))))

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1541   ∈ wcel 2109   ≠ wne 2944  {crab 3069  Vcvv 3430   ↦ cmpt 5161  ‘cfv 6430  (class class class)co 7268   ∈ cmpo 7270  0cc0 10855  1c1 10856   + caddc 10858   − cmin 11188  ℕcn 11956  2c2 12011  ℤ_≥cuz 12564  lastSclsw 14246   prefix cpfx 14364  Vtxcvtx 27347   WWalksN cwwlksn 28170  ClWWalksNOncclwwlknon 28430

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1801  ax-4 1815  ax-5 1916  ax-6 1974  ax-7 2014  ax-8 2111  ax-9 2119  ax-10 2140  ax-11 2157  ax-12 2174  ax-ext 2710  ax-sep 5226  ax-nul 5233  ax-pr 5355

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1544  df-fal 1554  df-ex 1786  df-nf 1790  df-sb 2071  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ral 3070  df-rex 3071  df-rab 3074  df-v 3432  df-dif 3894  df-un 3896  df-in 3898  df-ss 3908  df-nul 4262  df-if 4465  df-sn 4567  df-pr 4569  df-op 4573  df-uni 4845  df-br 5079  df-opab 5141  df-mpt 5162  df-id 5488  df-xp 5594  df-rel 5595  df-cnv 5596  df-co 5597  df-dm 5598  df-iota 6388  df-fun 6432  df-fv 6438  df-ov 7271

This theorem is referenced by:  numclwlk2lem2f1o  28722