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Theorem bnj1312 31455
 Description: Technical lemma for bnj60 31459. This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.)
Hypotheses
Ref Expression
bnj1312.1 𝐵 = {𝑑 ∣ (𝑑𝐴 ∧ ∀𝑥𝑑 pred(𝑥, 𝐴, 𝑅) ⊆ 𝑑)}
bnj1312.2 𝑌 = ⟨𝑥, (𝑓 ↾ pred(𝑥, 𝐴, 𝑅))⟩
bnj1312.3 𝐶 = {𝑓 ∣ ∃𝑑𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥𝑑 (𝑓𝑥) = (𝐺𝑌))}
bnj1312.4 (𝜏 ↔ (𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
bnj1312.5 𝐷 = {𝑥𝐴 ∣ ¬ ∃𝑓𝜏}
bnj1312.6 (𝜓 ↔ (𝑅 FrSe 𝐴𝐷 ≠ ∅))
bnj1312.7 (𝜒 ↔ (𝜓𝑥𝐷 ∧ ∀𝑦𝐷 ¬ 𝑦𝑅𝑥))
bnj1312.8 (𝜏′[𝑦 / 𝑥]𝜏)
bnj1312.9 𝐻 = {𝑓 ∣ ∃𝑦 ∈ pred (𝑥, 𝐴, 𝑅)𝜏′}
bnj1312.10 𝑃 = 𝐻
bnj1312.11 𝑍 = ⟨𝑥, (𝑃 ↾ pred(𝑥, 𝐴, 𝑅))⟩
bnj1312.12 𝑄 = (𝑃 ∪ {⟨𝑥, (𝐺𝑍)⟩})
bnj1312.13 𝑊 = ⟨𝑧, (𝑄 ↾ pred(𝑧, 𝐴, 𝑅))⟩
bnj1312.14 𝐸 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))
Assertion
Ref Expression
bnj1312 (𝑅 FrSe 𝐴 → ∀𝑥𝐴𝑓𝐶 dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
Distinct variable groups:   𝐴,𝑑,𝑓,𝑥,𝑦,𝑧   𝐵,𝑓   𝑦,𝐶   𝑦,𝐷   𝐸,𝑑,𝑓,𝑦,𝑧   𝐺,𝑑,𝑓,𝑥,𝑦,𝑧   𝑧,𝑄   𝑅,𝑑,𝑓,𝑥,𝑦,𝑧   𝑧,𝑌   𝜒,𝑧   𝜓,𝑦   𝜏,𝑦
Allowed substitution hints:   𝜓(𝑥,𝑧,𝑓,𝑑)   𝜒(𝑥,𝑦,𝑓,𝑑)   𝜏(𝑥,𝑧,𝑓,𝑑)   𝐵(𝑥,𝑦,𝑧,𝑑)   𝐶(𝑥,𝑧,𝑓,𝑑)   𝐷(𝑥,𝑧,𝑓,𝑑)   𝑃(𝑥,𝑦,𝑧,𝑓,𝑑)   𝑄(𝑥,𝑦,𝑓,𝑑)   𝐸(𝑥)   𝐻(𝑥,𝑦,𝑧,𝑓,𝑑)   𝑊(𝑥,𝑦,𝑧,𝑓,𝑑)   𝑌(𝑥,𝑦,𝑓,𝑑)   𝑍(𝑥,𝑦,𝑧,𝑓,𝑑)   𝜏′(𝑥,𝑦,𝑧,𝑓,𝑑)

Proof of Theorem bnj1312
Dummy variable 𝑤 is distinct from all other variables.
StepHypRef Expression
1 bnj1312.5 . . 3 𝐷 = {𝑥𝐴 ∣ ¬ ∃𝑓𝜏}
2 bnj1312.6 . . . 4 (𝜓 ↔ (𝑅 FrSe 𝐴𝐷 ≠ ∅))
32simplbi 478 . . . . . . 7 (𝜓𝑅 FrSe 𝐴)
41ssrab3 3830 . . . . . . . 8 𝐷𝐴
54a1i 11 . . . . . . 7 (𝜓𝐷𝐴)
62simprbi 483 . . . . . . 7 (𝜓𝐷 ≠ ∅)
71bnj1230 31202 . . . . . . . 8 (𝑤𝐷 → ∀𝑥 𝑤𝐷)
87bnj1228 31408 . . . . . . 7 ((𝑅 FrSe 𝐴𝐷𝐴𝐷 ≠ ∅) → ∃𝑥𝐷𝑦𝐷 ¬ 𝑦𝑅𝑥)
93, 5, 6, 8syl3anc 1477 . . . . . 6 (𝜓 → ∃𝑥𝐷𝑦𝐷 ¬ 𝑦𝑅𝑥)
10 bnj1312.7 . . . . . 6 (𝜒 ↔ (𝜓𝑥𝐷 ∧ ∀𝑦𝐷 ¬ 𝑦𝑅𝑥))
11 nfv 1993 . . . . . . . . 9 𝑥 𝑅 FrSe 𝐴
127nfcii 2894 . . . . . . . . . 10 𝑥𝐷
13 nfcv 2903 . . . . . . . . . 10 𝑥
1412, 13nfne 3033 . . . . . . . . 9 𝑥 𝐷 ≠ ∅
1511, 14nfan 1978 . . . . . . . 8 𝑥(𝑅 FrSe 𝐴𝐷 ≠ ∅)
162, 15nfxfr 1928 . . . . . . 7 𝑥𝜓
1716nf5ri 2213 . . . . . 6 (𝜓 → ∀𝑥𝜓)
189, 10, 17bnj1521 31250 . . . . 5 (𝜓 → ∃𝑥𝜒)
1910simp2bi 1141 . . . . 5 (𝜒𝑥𝐷)
201bnj1538 31254 . . . . . 6 (𝑥𝐷 → ¬ ∃𝑓𝜏)
21 bnj1312.1 . . . . . . . . 9 𝐵 = {𝑑 ∣ (𝑑𝐴 ∧ ∀𝑥𝑑 pred(𝑥, 𝐴, 𝑅) ⊆ 𝑑)}
22 bnj1312.2 . . . . . . . . 9 𝑌 = ⟨𝑥, (𝑓 ↾ pred(𝑥, 𝐴, 𝑅))⟩
23 bnj1312.3 . . . . . . . . 9 𝐶 = {𝑓 ∣ ∃𝑑𝐵 (𝑓 Fn 𝑑 ∧ ∀𝑥𝑑 (𝑓𝑥) = (𝐺𝑌))}
24 bnj1312.4 . . . . . . . . 9 (𝜏 ↔ (𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
25 bnj1312.8 . . . . . . . . 9 (𝜏′[𝑦 / 𝑥]𝜏)
26 bnj1312.9 . . . . . . . . 9 𝐻 = {𝑓 ∣ ∃𝑦 ∈ pred (𝑥, 𝐴, 𝑅)𝜏′}
27 bnj1312.10 . . . . . . . . 9 𝑃 = 𝐻
28 bnj1312.11 . . . . . . . . 9 𝑍 = ⟨𝑥, (𝑃 ↾ pred(𝑥, 𝐴, 𝑅))⟩
29 bnj1312.12 . . . . . . . . 9 𝑄 = (𝑃 ∪ {⟨𝑥, (𝐺𝑍)⟩})
3021, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29bnj1489 31453 . . . . . . . 8 (𝜒𝑄 ∈ V)
31 bnj1312.13 . . . . . . . . . . 11 𝑊 = ⟨𝑧, (𝑄 ↾ pred(𝑧, 𝐴, 𝑅))⟩
32 bnj1312.14 . . . . . . . . . . 11 𝐸 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))
3310, 3bnj835 31158 . . . . . . . . . . . . . 14 (𝜒𝑅 FrSe 𝐴)
3421, 22, 23, 24, 1, 2, 10, 25, 26, 27bnj1384 31429 . . . . . . . . . . . . . 14 (𝑅 FrSe 𝐴 → Fun 𝑃)
3533, 34syl 17 . . . . . . . . . . . . 13 (𝜒 → Fun 𝑃)
3621, 22, 23, 24, 1, 2, 10, 25, 26, 27bnj1415 31435 . . . . . . . . . . . . 13 (𝜒 → dom 𝑃 = trCl(𝑥, 𝐴, 𝑅))
3735, 36bnj1422 31237 . . . . . . . . . . . 12 (𝜒𝑃 Fn trCl(𝑥, 𝐴, 𝑅))
3821, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 36bnj1416 31436 . . . . . . . . . . . . . 14 (𝜒 → dom 𝑄 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
3921, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 35, 38, 36bnj1421 31439 . . . . . . . . . . . . 13 (𝜒 → Fun 𝑄)
4039, 38bnj1422 31237 . . . . . . . . . . . 12 (𝜒𝑄 Fn ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
4121, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 31, 32, 37, 40bnj1423 31448 . . . . . . . . . . 11 (𝜒 → ∀𝑧𝐸 (𝑄𝑧) = (𝐺𝑊))
4232fneq2i 6148 . . . . . . . . . . . 12 (𝑄 Fn 𝐸𝑄 Fn ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
4340, 42sylibr 224 . . . . . . . . . . 11 (𝜒𝑄 Fn 𝐸)
4421, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 31, 32bnj1452 31449 . . . . . . . . . . 11 (𝜒𝐸𝐵)
4521, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 31, 32, 30, 41, 43, 44bnj1463 31452 . . . . . . . . . 10 (𝜒𝑄𝐶)
4645, 38jca 555 . . . . . . . . 9 (𝜒 → (𝑄𝐶 ∧ dom 𝑄 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
4721, 22, 23, 24, 1, 2, 10, 25, 26, 27, 28, 29, 46bnj1491 31454 . . . . . . . 8 ((𝜒𝑄 ∈ V) → ∃𝑓(𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
4830, 47mpdan 705 . . . . . . 7 (𝜒 → ∃𝑓(𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
4948, 24bnj1198 31195 . . . . . 6 (𝜒 → ∃𝑓𝜏)
5020, 49nsyl3 133 . . . . 5 (𝜒 → ¬ 𝑥𝐷)
5118, 19, 50bnj1304 31219 . . . 4 ¬ 𝜓
522, 51bnj1541 31255 . . 3 (𝑅 FrSe 𝐴𝐷 = ∅)
531, 52bnj1476 31246 . 2 (𝑅 FrSe 𝐴 → ∀𝑥𝐴𝑓𝜏)
5424exbii 1923 . . . 4 (∃𝑓𝜏 ↔ ∃𝑓(𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
55 df-rex 3057 . . . 4 (∃𝑓𝐶 dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)) ↔ ∃𝑓(𝑓𝐶 ∧ dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅))))
5654, 55bitr4i 267 . . 3 (∃𝑓𝜏 ↔ ∃𝑓𝐶 dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
5756ralbii 3119 . 2 (∀𝑥𝐴𝑓𝜏 ↔ ∀𝑥𝐴𝑓𝐶 dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
5853, 57sylib 208 1 (𝑅 FrSe 𝐴 → ∀𝑥𝐴𝑓𝐶 dom 𝑓 = ({𝑥} ∪ trCl(𝑥, 𝐴, 𝑅)))
 Colors of variables: wff setvar class Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 196   ∧ wa 383   ∧ w3a 1072   = wceq 1632  ∃wex 1853   ∈ wcel 2140  {cab 2747   ≠ wne 2933  ∀wral 3051  ∃wrex 3052  {crab 3055  Vcvv 3341  [wsbc 3577   ∪ cun 3714   ⊆ wss 3716  ∅c0 4059  {csn 4322  ⟨cop 4328  ∪ cuni 4589   class class class wbr 4805  dom cdm 5267   ↾ cres 5269  Fun wfun 6044   Fn wfn 6045  ‘cfv 6050   predc-bnj14 31085   FrSe w-bnj15 31089   trClc-bnj18 31091 This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1871  ax-4 1886  ax-5 1989  ax-6 2055  ax-7 2091  ax-8 2142  ax-9 2149  ax-10 2169  ax-11 2184  ax-12 2197  ax-13 2392  ax-ext 2741  ax-rep 4924  ax-sep 4934  ax-nul 4942  ax-pow 4993  ax-pr 5056  ax-un 7116  ax-reg 8665  ax-inf2 8714 This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-fal 1638  df-ex 1854  df-nf 1859  df-sb 2048  df-eu 2612  df-mo 2613  df-clab 2748  df-cleq 2754  df-clel 2757  df-nfc 2892  df-ne 2934  df-ral 3056  df-rex 3057  df-reu 3058  df-rab 3060  df-v 3343  df-sbc 3578  df-csb 3676  df-dif 3719  df-un 3721  df-in 3723  df-ss 3730  df-pss 3732  df-nul 4060  df-if 4232  df-pw 4305  df-sn 4323  df-pr 4325  df-tp 4327  df-op 4329  df-uni 4590  df-iun 4675  df-br 4806  df-opab 4866  df-mpt 4883  df-tr 4906  df-id 5175  df-eprel 5180  df-po 5188  df-so 5189  df-fr 5226  df-we 5228  df-xp 5273  df-rel 5274  df-cnv 5275  df-co 5276  df-dm 5277  df-rn 5278  df-res 5279  df-ima 5280  df-ord 5888  df-on 5889  df-lim 5890  df-suc 5891  df-iota 6013  df-fun 6052  df-fn 6053  df-f 6054  df-f1 6055  df-fo 6056  df-f1o 6057  df-fv 6058  df-om 7233  df-1o 7731  df-bnj17 31084  df-bnj14 31086  df-bnj13 31088  df-bnj15 31090  df-bnj18 31092  df-bnj19 31094 This theorem is referenced by:  bnj1493  31456
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