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Theorem zorn2lem1 9278
Description: Lemma for zorn2 9288. (Contributed by NM, 3-Apr-1997.) (Revised by Mario Carneiro, 9-May-2015.)
Hypotheses
Ref Expression
zorn2lem.3 𝐹 = recs((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣)))
zorn2lem.4 𝐶 = {𝑧𝐴 ∣ ∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧}
zorn2lem.5 𝐷 = {𝑧𝐴 ∣ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧}
Assertion
Ref Expression
zorn2lem1 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) ∈ 𝐷)
Distinct variable groups:   𝑓,𝑔,𝑢,𝑣,𝑤,𝑥,𝑧,𝐴   𝐷,𝑓,𝑢,𝑣   𝑓,𝐹,𝑔,𝑢,𝑣,𝑥,𝑧   𝑅,𝑓,𝑔,𝑢,𝑣,𝑤,𝑥,𝑧   𝑣,𝐶
Allowed substitution hints:   𝐶(𝑥,𝑧,𝑤,𝑢,𝑓,𝑔)   𝐷(𝑥,𝑧,𝑤,𝑔)   𝐹(𝑤)

Proof of Theorem zorn2lem1
StepHypRef Expression
1 zorn2lem.3 . . . . 5 𝐹 = recs((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣)))
21tfr2 7454 . . . 4 (𝑥 ∈ On → (𝐹𝑥) = ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)))
32adantr 481 . . 3 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) = ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)))
41tfr1 7453 . . . . . 6 𝐹 Fn On
5 fnfun 5956 . . . . . 6 (𝐹 Fn On → Fun 𝐹)
64, 5ax-mp 5 . . . . 5 Fun 𝐹
7 vex 3193 . . . . 5 𝑥 ∈ V
8 resfunexg 6444 . . . . 5 ((Fun 𝐹𝑥 ∈ V) → (𝐹𝑥) ∈ V)
96, 7, 8mp2an 707 . . . 4 (𝐹𝑥) ∈ V
10 rneq 5321 . . . . . . . . . . . 12 (𝑓 = (𝐹𝑥) → ran 𝑓 = ran (𝐹𝑥))
11 df-ima 5097 . . . . . . . . . . . 12 (𝐹𝑥) = ran (𝐹𝑥)
1210, 11syl6eqr 2673 . . . . . . . . . . 11 (𝑓 = (𝐹𝑥) → ran 𝑓 = (𝐹𝑥))
1312eleq2d 2684 . . . . . . . . . 10 (𝑓 = (𝐹𝑥) → (𝑔 ∈ ran 𝑓𝑔 ∈ (𝐹𝑥)))
1413imbi1d 331 . . . . . . . . 9 (𝑓 = (𝐹𝑥) → ((𝑔 ∈ ran 𝑓𝑔𝑅𝑧) ↔ (𝑔 ∈ (𝐹𝑥) → 𝑔𝑅𝑧)))
1514ralbidv2 2980 . . . . . . . 8 (𝑓 = (𝐹𝑥) → (∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧 ↔ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧))
1615rabbidv 3181 . . . . . . 7 (𝑓 = (𝐹𝑥) → {𝑧𝐴 ∣ ∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧} = {𝑧𝐴 ∣ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧})
17 zorn2lem.4 . . . . . . 7 𝐶 = {𝑧𝐴 ∣ ∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧}
18 zorn2lem.5 . . . . . . 7 𝐷 = {𝑧𝐴 ∣ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧}
1916, 17, 183eqtr4g 2680 . . . . . 6 (𝑓 = (𝐹𝑥) → 𝐶 = 𝐷)
2019eleq2d 2684 . . . . . . . 8 (𝑓 = (𝐹𝑥) → (𝑢𝐶𝑢𝐷))
2120imbi1d 331 . . . . . . 7 (𝑓 = (𝐹𝑥) → ((𝑢𝐶 → ¬ 𝑢𝑤𝑣) ↔ (𝑢𝐷 → ¬ 𝑢𝑤𝑣)))
2221ralbidv2 2980 . . . . . 6 (𝑓 = (𝐹𝑥) → (∀𝑢𝐶 ¬ 𝑢𝑤𝑣 ↔ ∀𝑢𝐷 ¬ 𝑢𝑤𝑣))
2319, 22riotaeqbidv 6579 . . . . 5 (𝑓 = (𝐹𝑥) → (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
24 eqid 2621 . . . . 5 (𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣)) = (𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))
25 riotaex 6580 . . . . 5 (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ V
2623, 24, 25fvmpt 6249 . . . 4 ((𝐹𝑥) ∈ V → ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
279, 26ax-mp 5 . . 3 ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
283, 27syl6eq 2671 . 2 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
29 simprl 793 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝑤 We 𝐴)
30 weso 5075 . . . . . . 7 (𝑤 We 𝐴𝑤 Or 𝐴)
3130ad2antrl 763 . . . . . 6 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝑤 Or 𝐴)
32 vex 3193 . . . . . 6 𝑤 ∈ V
33 soex 7071 . . . . . 6 ((𝑤 Or 𝐴𝑤 ∈ V) → 𝐴 ∈ V)
3431, 32, 33sylancl 693 . . . . 5 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐴 ∈ V)
3518, 34rabexd 4784 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷 ∈ V)
36 ssrab2 3672 . . . . . 6 {𝑧𝐴 ∣ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧} ⊆ 𝐴
3718, 36eqsstri 3620 . . . . 5 𝐷𝐴
3837a1i 11 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷𝐴)
39 simprr 795 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷 ≠ ∅)
40 wereu 5080 . . . 4 ((𝑤 We 𝐴 ∧ (𝐷 ∈ V ∧ 𝐷𝐴𝐷 ≠ ∅)) → ∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
4129, 35, 38, 39, 40syl13anc 1325 . . 3 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → ∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
42 riotacl 6590 . . 3 (∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣 → (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ 𝐷)
4341, 42syl 17 . 2 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ 𝐷)
4428, 43eqeltrd 2698 1 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) ∈ 𝐷)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 384   = wceq 1480  wcel 1987  wne 2790  wral 2908  ∃!wreu 2910  {crab 2912  Vcvv 3190  wss 3560  c0 3897   class class class wbr 4623  cmpt 4683   Or wor 5004   We wwe 5042  ran crn 5085  cres 5086  cima 5087  Oncon0 5692  Fun wfun 5851   Fn wfn 5852  cfv 5857  crio 6575  recscrecs 7427
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4741  ax-sep 4751  ax-nul 4759  ax-pow 4813  ax-pr 4877  ax-un 6914
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2913  df-rex 2914  df-reu 2915  df-rmo 2916  df-rab 2917  df-v 3192  df-sbc 3423  df-csb 3520  df-dif 3563  df-un 3565  df-in 3567  df-ss 3574  df-pss 3576  df-nul 3898  df-if 4065  df-sn 4156  df-pr 4158  df-tp 4160  df-op 4162  df-uni 4410  df-iun 4494  df-br 4624  df-opab 4684  df-mpt 4685  df-tr 4723  df-eprel 4995  df-id 4999  df-po 5005  df-so 5006  df-fr 5043  df-we 5045  df-xp 5090  df-rel 5091  df-cnv 5092  df-co 5093  df-dm 5094  df-rn 5095  df-res 5096  df-ima 5097  df-pred 5649  df-ord 5695  df-on 5696  df-suc 5698  df-iota 5820  df-fun 5859  df-fn 5860  df-f 5861  df-f1 5862  df-fo 5863  df-f1o 5864  df-fv 5865  df-riota 6576  df-wrecs 7367  df-recs 7428
This theorem is referenced by:  zorn2lem2  9279  zorn2lem3  9280  zorn2lem4  9281  zorn2lem5  9282
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