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Theorem fineqvlem 8339
Description: Lemma for fineqv 8340. (Contributed by Mario Carneiro, 20-Jan-2013.) (Proof shortened by Stefan O'Rear, 3-Nov-2014.) (Revised by Mario Carneiro, 17-May-2015.)
Assertion
Ref Expression
fineqvlem ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → ω ≼ 𝒫 𝒫 𝐴)

Proof of Theorem fineqvlem
Dummy variables 𝑏 𝑐 𝑑 𝑒 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 pwexg 4999 . . . 4 (𝐴𝑉 → 𝒫 𝐴 ∈ V)
21adantr 472 . . 3 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → 𝒫 𝐴 ∈ V)
3 pwexg 4999 . . 3 (𝒫 𝐴 ∈ V → 𝒫 𝒫 𝐴 ∈ V)
42, 3syl 17 . 2 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → 𝒫 𝒫 𝐴 ∈ V)
5 ssrab2 3828 . . . . 5 {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ⊆ 𝒫 𝐴
6 elpw2g 4976 . . . . . 6 (𝒫 𝐴 ∈ V → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} ∈ 𝒫 𝒫 𝐴 ↔ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ⊆ 𝒫 𝐴))
72, 6syl 17 . . . . 5 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} ∈ 𝒫 𝒫 𝐴 ↔ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ⊆ 𝒫 𝐴))
85, 7mpbiri 248 . . . 4 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ∈ 𝒫 𝒫 𝐴)
98a1d 25 . . 3 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → (𝑏 ∈ ω → {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ∈ 𝒫 𝒫 𝐴))
10 isinf 8338 . . . . . . . . 9 𝐴 ∈ Fin → ∀𝑏 ∈ ω ∃𝑒(𝑒𝐴𝑒𝑏))
1110r19.21bi 3070 . . . . . . . 8 ((¬ 𝐴 ∈ Fin ∧ 𝑏 ∈ ω) → ∃𝑒(𝑒𝐴𝑒𝑏))
1211ad2ant2lr 801 . . . . . . 7 (((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) → ∃𝑒(𝑒𝐴𝑒𝑏))
13 selpw 4309 . . . . . . . . . . 11 (𝑒 ∈ 𝒫 𝐴𝑒𝐴)
1413biimpri 218 . . . . . . . . . 10 (𝑒𝐴𝑒 ∈ 𝒫 𝐴)
1514anim1i 593 . . . . . . . . 9 ((𝑒𝐴𝑒𝑏) → (𝑒 ∈ 𝒫 𝐴𝑒𝑏))
16 breq1 4807 . . . . . . . . . 10 (𝑑 = 𝑒 → (𝑑𝑏𝑒𝑏))
1716elrab 3504 . . . . . . . . 9 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ↔ (𝑒 ∈ 𝒫 𝐴𝑒𝑏))
1815, 17sylibr 224 . . . . . . . 8 ((𝑒𝐴𝑒𝑏) → 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏})
1918eximi 1911 . . . . . . 7 (∃𝑒(𝑒𝐴𝑒𝑏) → ∃𝑒 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏})
2012, 19syl 17 . . . . . 6 (((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) → ∃𝑒 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏})
21 eleq2 2828 . . . . . . . . 9 ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ↔ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐}))
2221biimpcd 239 . . . . . . . 8 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐}))
2322adantl 473 . . . . . . 7 ((((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) ∧ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏}) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐}))
2417simprbi 483 . . . . . . . . . 10 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} → 𝑒𝑏)
25 breq1 4807 . . . . . . . . . . . 12 (𝑑 = 𝑒 → (𝑑𝑐𝑒𝑐))
2625elrab 3504 . . . . . . . . . . 11 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐} ↔ (𝑒 ∈ 𝒫 𝐴𝑒𝑐))
2726simprbi 483 . . . . . . . . . 10 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑒𝑐)
28 ensym 8170 . . . . . . . . . . 11 (𝑒𝑏𝑏𝑒)
29 entr 8173 . . . . . . . . . . 11 ((𝑏𝑒𝑒𝑐) → 𝑏𝑐)
3028, 29sylan 489 . . . . . . . . . 10 ((𝑒𝑏𝑒𝑐) → 𝑏𝑐)
3124, 27, 30syl2an 495 . . . . . . . . 9 ((𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} ∧ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐}) → 𝑏𝑐)
3231ex 449 . . . . . . . 8 (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏} → (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑏𝑐))
3332adantl 473 . . . . . . 7 ((((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) ∧ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏}) → (𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑏𝑐))
34 nneneq 8308 . . . . . . . . 9 ((𝑏 ∈ ω ∧ 𝑐 ∈ ω) → (𝑏𝑐𝑏 = 𝑐))
3534biimpd 219 . . . . . . . 8 ((𝑏 ∈ ω ∧ 𝑐 ∈ ω) → (𝑏𝑐𝑏 = 𝑐))
3635ad2antlr 765 . . . . . . 7 ((((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) ∧ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏}) → (𝑏𝑐𝑏 = 𝑐))
3723, 33, 363syld 60 . . . . . 6 ((((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) ∧ 𝑒 ∈ {𝑑 ∈ 𝒫 𝐴𝑑𝑏}) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑏 = 𝑐))
3820, 37exlimddv 2012 . . . . 5 (((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} → 𝑏 = 𝑐))
39 breq2 4808 . . . . . 6 (𝑏 = 𝑐 → (𝑑𝑏𝑑𝑐))
4039rabbidv 3329 . . . . 5 (𝑏 = 𝑐 → {𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐})
4138, 40impbid1 215 . . . 4 (((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) ∧ (𝑏 ∈ ω ∧ 𝑐 ∈ ω)) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} ↔ 𝑏 = 𝑐))
4241ex 449 . . 3 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → ((𝑏 ∈ ω ∧ 𝑐 ∈ ω) → ({𝑑 ∈ 𝒫 𝐴𝑑𝑏} = {𝑑 ∈ 𝒫 𝐴𝑑𝑐} ↔ 𝑏 = 𝑐)))
439, 42dom2d 8162 . 2 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → (𝒫 𝒫 𝐴 ∈ V → ω ≼ 𝒫 𝒫 𝐴))
444, 43mpd 15 1 ((𝐴𝑉 ∧ ¬ 𝐴 ∈ Fin) → ω ≼ 𝒫 𝒫 𝐴)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 196  wa 383   = wceq 1632  wex 1853  wcel 2139  {crab 3054  Vcvv 3340  wss 3715  𝒫 cpw 4302   class class class wbr 4804  ωcom 7230  cen 8118  cdom 8119  Fincfn 8121
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-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-pw 4304  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-ord 5887  df-on 5888  df-lim 5889  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-om 7231  df-er 7911  df-en 8122  df-dom 8123  df-fin 8125
This theorem is referenced by:  fineqv  8340  isfin1-2  9399
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