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Theorem elovmpt2wrd 13654
 Description: Implications for the value of an operation defined by the maps-to notation with a class abstration of words as a result having an element. Note that 𝜑 may depend on 𝑧 as well as on 𝑣 and 𝑦. (Contributed by Alexander van der Vekens, 15-Jul-2018.)
Hypothesis
Ref Expression
elovmpt2wrd.o 𝑂 = (𝑣 ∈ V, 𝑦 ∈ V ↦ {𝑧 ∈ Word 𝑣𝜑})
Assertion
Ref Expression
elovmpt2wrd (𝑍 ∈ (𝑉𝑂𝑌) → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉))
Distinct variable groups:   𝑣,𝑉,𝑦,𝑧   𝑣,𝑌,𝑦,𝑧   𝑧,𝑍
Allowed substitution hints:   𝜑(𝑦,𝑧,𝑣)   𝑂(𝑦,𝑧,𝑣)   𝑍(𝑦,𝑣)

Proof of Theorem elovmpt2wrd
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 elovmpt2wrd.o . . . 4 𝑂 = (𝑣 ∈ V, 𝑦 ∈ V ↦ {𝑧 ∈ Word 𝑣𝜑})
2 csbwrdg 13639 . . . . . . . 8 (𝑣 ∈ V → 𝑣 / 𝑥Word 𝑥 = Word 𝑣)
32eqcomd 2784 . . . . . . 7 (𝑣 ∈ V → Word 𝑣 = 𝑣 / 𝑥Word 𝑥)
43adantr 474 . . . . . 6 ((𝑣 ∈ V ∧ 𝑦 ∈ V) → Word 𝑣 = 𝑣 / 𝑥Word 𝑥)
54rabeqdv 3391 . . . . 5 ((𝑣 ∈ V ∧ 𝑦 ∈ V) → {𝑧 ∈ Word 𝑣𝜑} = {𝑧𝑣 / 𝑥Word 𝑥𝜑})
65mpt2eq3ia 6999 . . . 4 (𝑣 ∈ V, 𝑦 ∈ V ↦ {𝑧 ∈ Word 𝑣𝜑}) = (𝑣 ∈ V, 𝑦 ∈ V ↦ {𝑧𝑣 / 𝑥Word 𝑥𝜑})
71, 6eqtri 2802 . . 3 𝑂 = (𝑣 ∈ V, 𝑦 ∈ V ↦ {𝑧𝑣 / 𝑥Word 𝑥𝜑})
8 csbwrdg 13639 . . . . 5 (𝑉 ∈ V → 𝑉 / 𝑥Word 𝑥 = Word 𝑉)
9 wrdexg 13615 . . . . 5 (𝑉 ∈ V → Word 𝑉 ∈ V)
108, 9eqeltrd 2859 . . . 4 (𝑉 ∈ V → 𝑉 / 𝑥Word 𝑥 ∈ V)
1110adantr 474 . . 3 ((𝑉 ∈ V ∧ 𝑌 ∈ V) → 𝑉 / 𝑥Word 𝑥 ∈ V)
127, 11elovmpt2rab1 7160 . 2 (𝑍 ∈ (𝑉𝑂𝑌) → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍𝑉 / 𝑥Word 𝑥))
138eleq2d 2845 . . . . 5 (𝑉 ∈ V → (𝑍𝑉 / 𝑥Word 𝑥𝑍 ∈ Word 𝑉))
1413adantr 474 . . . 4 ((𝑉 ∈ V ∧ 𝑌 ∈ V) → (𝑍𝑉 / 𝑥Word 𝑥𝑍 ∈ Word 𝑉))
15 id 22 . . . . 5 ((𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉) → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉))
16153expia 1111 . . . 4 ((𝑉 ∈ V ∧ 𝑌 ∈ V) → (𝑍 ∈ Word 𝑉 → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉)))
1714, 16sylbid 232 . . 3 ((𝑉 ∈ V ∧ 𝑌 ∈ V) → (𝑍𝑉 / 𝑥Word 𝑥 → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉)))
18173impia 1106 . 2 ((𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍𝑉 / 𝑥Word 𝑥) → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉))
1912, 18syl 17 1 (𝑍 ∈ (𝑉𝑂𝑌) → (𝑉 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ Word 𝑉))
 Colors of variables: wff setvar class Syntax hints:   → wi 4   ↔ wb 198   ∧ wa 386   ∧ w3a 1071   = wceq 1601   ∈ wcel 2107  {crab 3094  Vcvv 3398  ⦋csb 3751  (class class class)co 6924   ↦ cmpt2 6926  Word cword 13605 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1839  ax-4 1853  ax-5 1953  ax-6 2021  ax-7 2055  ax-8 2109  ax-9 2116  ax-10 2135  ax-11 2150  ax-12 2163  ax-13 2334  ax-ext 2754  ax-rep 5008  ax-sep 5019  ax-nul 5027  ax-pow 5079  ax-pr 5140  ax-un 7228  ax-cnex 10330  ax-1cn 10332  ax-addcl 10334 This theorem depends on definitions:  df-bi 199  df-an 387  df-or 837  df-3or 1072  df-3an 1073  df-tru 1605  df-fal 1615  df-ex 1824  df-nf 1828  df-sb 2012  df-mo 2551  df-eu 2587  df-clab 2764  df-cleq 2770  df-clel 2774  df-nfc 2921  df-ne 2970  df-ral 3095  df-rex 3096  df-reu 3097  df-rab 3099  df-v 3400  df-sbc 3653  df-csb 3752  df-dif 3795  df-un 3797  df-in 3799  df-ss 3806  df-pss 3808  df-nul 4142  df-if 4308  df-pw 4381  df-sn 4399  df-pr 4401  df-tp 4403  df-op 4405  df-uni 4674  df-iun 4757  df-br 4889  df-opab 4951  df-mpt 4968  df-tr 4990  df-id 5263  df-eprel 5268  df-po 5276  df-so 5277  df-fr 5316  df-we 5318  df-xp 5363  df-rel 5364  df-cnv 5365  df-co 5366  df-dm 5367  df-rn 5368  df-res 5369  df-ima 5370  df-pred 5935  df-ord 5981  df-on 5982  df-lim 5983  df-suc 5984  df-iota 6101  df-fun 6139  df-fn 6140  df-f 6141  df-f1 6142  df-fo 6143  df-f1o 6144  df-fv 6145  df-ov 6927  df-oprab 6928  df-mpt2 6929  df-om 7346  df-wrecs 7691  df-recs 7753  df-rdg 7791  df-map 8144  df-nn 11380  df-n0 11648  df-word 13606 This theorem is referenced by: (None)
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