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Theorem zorn2lem1 9510
Description: Lemma for zorn2 9520. (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 7663 . . . 4 (𝑥 ∈ On → (𝐹𝑥) = ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)))
32adantr 472 . . 3 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) = ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)))
41tfr1 7662 . . . . . 6 𝐹 Fn On
5 fnfun 6149 . . . . . 6 (𝐹 Fn On → Fun 𝐹)
64, 5ax-mp 5 . . . . 5 Fun 𝐹
7 vex 3343 . . . . 5 𝑥 ∈ V
8 resfunexg 6643 . . . . 5 ((Fun 𝐹𝑥 ∈ V) → (𝐹𝑥) ∈ V)
96, 7, 8mp2an 710 . . . 4 (𝐹𝑥) ∈ V
10 rneq 5506 . . . . . . . . . . . 12 (𝑓 = (𝐹𝑥) → ran 𝑓 = ran (𝐹𝑥))
11 df-ima 5279 . . . . . . . . . . . 12 (𝐹𝑥) = ran (𝐹𝑥)
1210, 11syl6eqr 2812 . . . . . . . . . . 11 (𝑓 = (𝐹𝑥) → ran 𝑓 = (𝐹𝑥))
1312eleq2d 2825 . . . . . . . . . 10 (𝑓 = (𝐹𝑥) → (𝑔 ∈ ran 𝑓𝑔 ∈ (𝐹𝑥)))
1413imbi1d 330 . . . . . . . . 9 (𝑓 = (𝐹𝑥) → ((𝑔 ∈ ran 𝑓𝑔𝑅𝑧) ↔ (𝑔 ∈ (𝐹𝑥) → 𝑔𝑅𝑧)))
1514ralbidv2 3122 . . . . . . . 8 (𝑓 = (𝐹𝑥) → (∀𝑔 ∈ ran 𝑓 𝑔𝑅𝑧 ↔ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧))
1615rabbidv 3329 . . . . . . 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 2819 . . . . . 6 (𝑓 = (𝐹𝑥) → 𝐶 = 𝐷)
2019eleq2d 2825 . . . . . . . 8 (𝑓 = (𝐹𝑥) → (𝑢𝐶𝑢𝐷))
2120imbi1d 330 . . . . . . 7 (𝑓 = (𝐹𝑥) → ((𝑢𝐶 → ¬ 𝑢𝑤𝑣) ↔ (𝑢𝐷 → ¬ 𝑢𝑤𝑣)))
2221ralbidv2 3122 . . . . . 6 (𝑓 = (𝐹𝑥) → (∀𝑢𝐶 ¬ 𝑢𝑤𝑣 ↔ ∀𝑢𝐷 ¬ 𝑢𝑤𝑣))
2319, 22riotaeqbidv 6777 . . . . 5 (𝑓 = (𝐹𝑥) → (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
24 eqid 2760 . . . . 5 (𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣)) = (𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))
25 riotaex 6778 . . . . 5 (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ V
2623, 24, 25fvmpt 6444 . . . 4 ((𝐹𝑥) ∈ V → ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
279, 26ax-mp 5 . . 3 ((𝑓 ∈ V ↦ (𝑣𝐶𝑢𝐶 ¬ 𝑢𝑤𝑣))‘(𝐹𝑥)) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
283, 27syl6eq 2810 . 2 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) = (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣))
29 simprl 811 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝑤 We 𝐴)
30 weso 5257 . . . . . . 7 (𝑤 We 𝐴𝑤 Or 𝐴)
3130ad2antrl 766 . . . . . 6 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝑤 Or 𝐴)
32 vex 3343 . . . . . 6 𝑤 ∈ V
33 soex 7274 . . . . . 6 ((𝑤 Or 𝐴𝑤 ∈ V) → 𝐴 ∈ V)
3431, 32, 33sylancl 697 . . . . 5 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐴 ∈ V)
3518, 34rabexd 4965 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷 ∈ V)
36 ssrab2 3828 . . . . . 6 {𝑧𝐴 ∣ ∀𝑔 ∈ (𝐹𝑥)𝑔𝑅𝑧} ⊆ 𝐴
3718, 36eqsstri 3776 . . . . 5 𝐷𝐴
3837a1i 11 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷𝐴)
39 simprr 813 . . . 4 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → 𝐷 ≠ ∅)
40 wereu 5262 . . . 4 ((𝑤 We 𝐴 ∧ (𝐷 ∈ V ∧ 𝐷𝐴𝐷 ≠ ∅)) → ∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
4129, 35, 38, 39, 40syl13anc 1479 . . 3 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → ∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣)
42 riotacl 6788 . . 3 (∃!𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣 → (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ 𝐷)
4341, 42syl 17 . 2 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝑣𝐷𝑢𝐷 ¬ 𝑢𝑤𝑣) ∈ 𝐷)
4428, 43eqeltrd 2839 1 ((𝑥 ∈ On ∧ (𝑤 We 𝐴𝐷 ≠ ∅)) → (𝐹𝑥) ∈ 𝐷)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wa 383   = wceq 1632  wcel 2139  wne 2932  wral 3050  ∃!wreu 3052  {crab 3054  Vcvv 3340  wss 3715  c0 4058   class class class wbr 4804  cmpt 4881   Or wor 5186   We wwe 5224  ran crn 5267  cres 5268  cima 5269  Oncon0 5884  Fun wfun 6043   Fn wfn 6044  cfv 6049  crio 6773  recscrecs 7636
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 1988  ax-6 2054  ax-7 2090  ax-8 2141  ax-9 2148  ax-10 2168  ax-11 2183  ax-12 2196  ax-13 2391  ax-ext 2740  ax-rep 4923  ax-sep 4933  ax-nul 4941  ax-pow 4992  ax-pr 5055  ax-un 7114
This theorem depends on definitions:  df-bi 197  df-or 384  df-an 385  df-3or 1073  df-3an 1074  df-tru 1635  df-ex 1854  df-nf 1859  df-sb 2047  df-eu 2611  df-mo 2612  df-clab 2747  df-cleq 2753  df-clel 2756  df-nfc 2891  df-ne 2933  df-ral 3055  df-rex 3056  df-reu 3057  df-rmo 3058  df-rab 3059  df-v 3342  df-sbc 3577  df-csb 3675  df-dif 3718  df-un 3720  df-in 3722  df-ss 3729  df-pss 3731  df-nul 4059  df-if 4231  df-sn 4322  df-pr 4324  df-tp 4326  df-op 4328  df-uni 4589  df-iun 4674  df-br 4805  df-opab 4865  df-mpt 4882  df-tr 4905  df-id 5174  df-eprel 5179  df-po 5187  df-so 5188  df-fr 5225  df-we 5227  df-xp 5272  df-rel 5273  df-cnv 5274  df-co 5275  df-dm 5276  df-rn 5277  df-res 5278  df-ima 5279  df-pred 5841  df-ord 5887  df-on 5888  df-suc 5890  df-iota 6012  df-fun 6051  df-fn 6052  df-f 6053  df-f1 6054  df-fo 6055  df-f1o 6056  df-fv 6057  df-riota 6774  df-wrecs 7576  df-recs 7637
This theorem is referenced by:  zorn2lem2  9511  zorn2lem3  9512  zorn2lem4  9513  zorn2lem5  9514
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