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Theorem grudomon 10504
Description: Each ordinal that is comparable with an element of the universe is in the universe. (Contributed by Mario Carneiro, 10-Jun-2013.)
Assertion
Ref Expression
grudomon ((𝑈 ∈ Univ ∧ 𝐴 ∈ On ∧ (𝐵𝑈𝐴𝐵)) → 𝐴𝑈)

Proof of Theorem grudomon
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 breq1 5073 . . . . . . . 8 (𝑥 = 𝑦 → (𝑥𝐵𝑦𝐵))
2 eleq1 2826 . . . . . . . 8 (𝑥 = 𝑦 → (𝑥𝑈𝑦𝑈))
31, 2imbi12d 344 . . . . . . 7 (𝑥 = 𝑦 → ((𝑥𝐵𝑥𝑈) ↔ (𝑦𝐵𝑦𝑈)))
43imbi2d 340 . . . . . 6 (𝑥 = 𝑦 → (((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))))
5 breq1 5073 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝐵𝐴𝐵))
6 eleq1 2826 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝑈𝐴𝑈))
75, 6imbi12d 344 . . . . . . 7 (𝑥 = 𝐴 → ((𝑥𝐵𝑥𝑈) ↔ (𝐴𝐵𝐴𝑈)))
87imbi2d 340 . . . . . 6 (𝑥 = 𝐴 → (((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵𝐴𝑈))))
9 r19.21v 3100 . . . . . . 7 (∀𝑦𝑥 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → ∀𝑦𝑥 (𝑦𝐵𝑦𝑈)))
10 simpl1 1189 . . . . . . . . . . . . . . . 16 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → 𝑥 ∈ On)
11 vex 3426 . . . . . . . . . . . . . . . . 17 𝑥 ∈ V
12 onelss 6293 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ On → (𝑦𝑥𝑦𝑥))
1312imp 406 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
14 ssdomg 8741 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ V → (𝑦𝑥𝑦𝑥))
1511, 13, 14mpsyl 68 . . . . . . . . . . . . . . . 16 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
1610, 15sylan 579 . . . . . . . . . . . . . . 15 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → 𝑦𝑥)
17 simplr 765 . . . . . . . . . . . . . . 15 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → 𝑥𝐵)
18 domtr 8748 . . . . . . . . . . . . . . 15 ((𝑦𝑥𝑥𝐵) → 𝑦𝐵)
1916, 17, 18syl2anc 583 . . . . . . . . . . . . . 14 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → 𝑦𝐵)
20 pm2.27 42 . . . . . . . . . . . . . 14 (𝑦𝐵 → ((𝑦𝐵𝑦𝑈) → 𝑦𝑈))
2119, 20syl 17 . . . . . . . . . . . . 13 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → ((𝑦𝐵𝑦𝑈) → 𝑦𝑈))
2221ralimdva 3102 . . . . . . . . . . . 12 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → ∀𝑦𝑥 𝑦𝑈))
23 dfss3 3905 . . . . . . . . . . . . 13 (𝑥𝑈 ↔ ∀𝑦𝑥 𝑦𝑈)
24 domeng 8707 . . . . . . . . . . . . . . . 16 (𝐵𝑈 → (𝑥𝐵 ↔ ∃𝑦(𝑥𝑦𝑦𝐵)))
25243ad2ant3 1133 . . . . . . . . . . . . . . 15 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵 ↔ ∃𝑦(𝑥𝑦𝑦𝐵)))
2625biimpa 476 . . . . . . . . . . . . . 14 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ∃𝑦(𝑥𝑦𝑦𝐵))
27 simpl2 1190 . . . . . . . . . . . . . . 15 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → 𝑈 ∈ Univ)
28 gruss 10483 . . . . . . . . . . . . . . . . . . . . 21 ((𝑈 ∈ Univ ∧ 𝐵𝑈𝑦𝐵) → 𝑦𝑈)
29283expia 1119 . . . . . . . . . . . . . . . . . . . 20 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))
30293adant1 1128 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))
3130adantr 480 . . . . . . . . . . . . . . . . . 18 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (𝑦𝐵𝑦𝑈))
32 ensym 8744 . . . . . . . . . . . . . . . . . 18 (𝑥𝑦𝑦𝑥)
3331, 32anim12d1 609 . . . . . . . . . . . . . . . . 17 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ((𝑦𝐵𝑥𝑦) → (𝑦𝑈𝑦𝑥)))
3433ancomsd 465 . . . . . . . . . . . . . . . 16 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ((𝑥𝑦𝑦𝐵) → (𝑦𝑈𝑦𝑥)))
3534eximdv 1921 . . . . . . . . . . . . . . 15 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∃𝑦(𝑥𝑦𝑦𝐵) → ∃𝑦(𝑦𝑈𝑦𝑥)))
36 gruen 10499 . . . . . . . . . . . . . . . . . 18 ((𝑈 ∈ Univ ∧ 𝑥𝑈 ∧ (𝑦𝑈𝑦𝑥)) → 𝑥𝑈)
37363com23 1124 . . . . . . . . . . . . . . . . 17 ((𝑈 ∈ Univ ∧ (𝑦𝑈𝑦𝑥) ∧ 𝑥𝑈) → 𝑥𝑈)
38373exp 1117 . . . . . . . . . . . . . . . 16 (𝑈 ∈ Univ → ((𝑦𝑈𝑦𝑥) → (𝑥𝑈𝑥𝑈)))
3938exlimdv 1937 . . . . . . . . . . . . . . 15 (𝑈 ∈ Univ → (∃𝑦(𝑦𝑈𝑦𝑥) → (𝑥𝑈𝑥𝑈)))
4027, 35, 39sylsyld 61 . . . . . . . . . . . . . 14 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∃𝑦(𝑥𝑦𝑦𝐵) → (𝑥𝑈𝑥𝑈)))
4126, 40mpd 15 . . . . . . . . . . . . 13 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (𝑥𝑈𝑥𝑈))
4223, 41syl5bir 242 . . . . . . . . . . . 12 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∀𝑦𝑥 𝑦𝑈𝑥𝑈))
4322, 42syld 47 . . . . . . . . . . 11 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → 𝑥𝑈))
4443ex 412 . . . . . . . . . 10 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵 → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → 𝑥𝑈)))
4544com23 86 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → (𝑥𝐵𝑥𝑈)))
46453expib 1120 . . . . . . . 8 (𝑥 ∈ On → ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → (𝑥𝐵𝑥𝑈))))
4746a2d 29 . . . . . . 7 (𝑥 ∈ On → (((𝑈 ∈ Univ ∧ 𝐵𝑈) → ∀𝑦𝑥 (𝑦𝐵𝑦𝑈)) → ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈))))
489, 47syl5bi 241 . . . . . 6 (𝑥 ∈ On → (∀𝑦𝑥 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈)) → ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈))))
494, 8, 48tfis3 7679 . . . . 5 (𝐴 ∈ On → ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵𝐴𝑈)))
5049com3l 89 . . . 4 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵 → (𝐴 ∈ On → 𝐴𝑈)))
5150impr 454 . . 3 ((𝑈 ∈ Univ ∧ (𝐵𝑈𝐴𝐵)) → (𝐴 ∈ On → 𝐴𝑈))
52513impia 1115 . 2 ((𝑈 ∈ Univ ∧ (𝐵𝑈𝐴𝐵) ∧ 𝐴 ∈ On) → 𝐴𝑈)
53523com23 1124 1 ((𝑈 ∈ Univ ∧ 𝐴 ∈ On ∧ (𝐵𝑈𝐴𝐵)) → 𝐴𝑈)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 395  w3a 1085   = wceq 1539  wex 1783  wcel 2108  wral 3063  Vcvv 3422  wss 3883   class class class wbr 5070  Oncon0 6251  cen 8688  cdom 8689  Univcgru 10477
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-ral 3068  df-rex 3069  df-rab 3072  df-v 3424  df-sbc 3712  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-br 5071  df-opab 5133  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-ord 6254  df-on 6255  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-ov 7258  df-oprab 7259  df-mpo 7260  df-er 8456  df-map 8575  df-en 8692  df-dom 8693  df-gru 10478
This theorem is referenced by:  gruina  10505  grur1  10507
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