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Theorem grudomon 10573
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 5077 . . . . . . . 8 (𝑥 = 𝑦 → (𝑥𝐵𝑦𝐵))
2 eleq1 2826 . . . . . . . 8 (𝑥 = 𝑦 → (𝑥𝑈𝑦𝑈))
31, 2imbi12d 345 . . . . . . 7 (𝑥 = 𝑦 → ((𝑥𝐵𝑥𝑈) ↔ (𝑦𝐵𝑦𝑈)))
43imbi2d 341 . . . . . 6 (𝑥 = 𝑦 → (((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))))
5 breq1 5077 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝐵𝐴𝐵))
6 eleq1 2826 . . . . . . . 8 (𝑥 = 𝐴 → (𝑥𝑈𝐴𝑈))
75, 6imbi12d 345 . . . . . . 7 (𝑥 = 𝐴 → ((𝑥𝐵𝑥𝑈) ↔ (𝐴𝐵𝐴𝑈)))
87imbi2d 341 . . . . . 6 (𝑥 = 𝐴 → (((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵𝑥𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵𝐴𝑈))))
9 r19.21v 3113 . . . . . . 7 (∀𝑦𝑥 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈)) ↔ ((𝑈 ∈ Univ ∧ 𝐵𝑈) → ∀𝑦𝑥 (𝑦𝐵𝑦𝑈)))
10 simpl1 1190 . . . . . . . . . . . . . . . 16 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → 𝑥 ∈ On)
11 vex 3436 . . . . . . . . . . . . . . . . 17 𝑥 ∈ V
12 onelss 6308 . . . . . . . . . . . . . . . . . 18 (𝑥 ∈ On → (𝑦𝑥𝑦𝑥))
1312imp 407 . . . . . . . . . . . . . . . . 17 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
14 ssdomg 8786 . . . . . . . . . . . . . . . . 17 (𝑥 ∈ V → (𝑦𝑥𝑦𝑥))
1511, 13, 14mpsyl 68 . . . . . . . . . . . . . . . 16 ((𝑥 ∈ On ∧ 𝑦𝑥) → 𝑦𝑥)
1610, 15sylan 580 . . . . . . . . . . . . . . 15 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → 𝑦𝑥)
17 simplr 766 . . . . . . . . . . . . . . 15 ((((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) ∧ 𝑦𝑥) → 𝑥𝐵)
18 domtr 8793 . . . . . . . . . . . . . . 15 ((𝑦𝑥𝑥𝐵) → 𝑦𝐵)
1916, 17, 18syl2anc 584 . . . . . . . . . . . . . 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 3108 . . . . . . . . . . . 12 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → ∀𝑦𝑥 𝑦𝑈))
23 dfss3 3909 . . . . . . . . . . . . 13 (𝑥𝑈 ↔ ∀𝑦𝑥 𝑦𝑈)
24 domeng 8752 . . . . . . . . . . . . . . . 16 (𝐵𝑈 → (𝑥𝐵 ↔ ∃𝑦(𝑥𝑦𝑦𝐵)))
25243ad2ant3 1134 . . . . . . . . . . . . . . 15 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵 ↔ ∃𝑦(𝑥𝑦𝑦𝐵)))
2625biimpa 477 . . . . . . . . . . . . . 14 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ∃𝑦(𝑥𝑦𝑦𝐵))
27 simpl2 1191 . . . . . . . . . . . . . . 15 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → 𝑈 ∈ Univ)
28 gruss 10552 . . . . . . . . . . . . . . . . . . . . 21 ((𝑈 ∈ Univ ∧ 𝐵𝑈𝑦𝐵) → 𝑦𝑈)
29283expia 1120 . . . . . . . . . . . . . . . . . . . 20 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))
30293adant1 1129 . . . . . . . . . . . . . . . . . . 19 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑦𝐵𝑦𝑈))
3130adantr 481 . . . . . . . . . . . . . . . . . 18 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (𝑦𝐵𝑦𝑈))
32 ensym 8789 . . . . . . . . . . . . . . . . . 18 (𝑥𝑦𝑦𝑥)
3331, 32anim12d1 610 . . . . . . . . . . . . . . . . 17 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ((𝑦𝐵𝑥𝑦) → (𝑦𝑈𝑦𝑥)))
3433ancomsd 466 . . . . . . . . . . . . . . . 16 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → ((𝑥𝑦𝑦𝐵) → (𝑦𝑈𝑦𝑥)))
3534eximdv 1920 . . . . . . . . . . . . . . 15 (((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) ∧ 𝑥𝐵) → (∃𝑦(𝑥𝑦𝑦𝐵) → ∃𝑦(𝑦𝑈𝑦𝑥)))
36 gruen 10568 . . . . . . . . . . . . . . . . . 18 ((𝑈 ∈ Univ ∧ 𝑥𝑈 ∧ (𝑦𝑈𝑦𝑥)) → 𝑥𝑈)
37363com23 1125 . . . . . . . . . . . . . . . . 17 ((𝑈 ∈ Univ ∧ (𝑦𝑈𝑦𝑥) ∧ 𝑥𝑈) → 𝑥𝑈)
38373exp 1118 . . . . . . . . . . . . . . . 16 (𝑈 ∈ Univ → ((𝑦𝑈𝑦𝑥) → (𝑥𝑈𝑥𝑈)))
3938exlimdv 1936 . . . . . . . . . . . . . . 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 413 . . . . . . . . . 10 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝑥𝐵 → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → 𝑥𝑈)))
4544com23 86 . . . . . . . . 9 ((𝑥 ∈ On ∧ 𝑈 ∈ Univ ∧ 𝐵𝑈) → (∀𝑦𝑥 (𝑦𝐵𝑦𝑈) → (𝑥𝐵𝑥𝑈)))
46453expib 1121 . . . . . . . 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 7704 . . . . 5 (𝐴 ∈ On → ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵𝐴𝑈)))
5049com3l 89 . . . 4 ((𝑈 ∈ Univ ∧ 𝐵𝑈) → (𝐴𝐵 → (𝐴 ∈ On → 𝐴𝑈)))
5150impr 455 . . 3 ((𝑈 ∈ Univ ∧ (𝐵𝑈𝐴𝐵)) → (𝐴 ∈ On → 𝐴𝑈))
52513impia 1116 . 2 ((𝑈 ∈ Univ ∧ (𝐵𝑈𝐴𝐵) ∧ 𝐴 ∈ On) → 𝐴𝑈)
53523com23 1125 1 ((𝑈 ∈ Univ ∧ 𝐴 ∈ On ∧ (𝐵𝑈𝐴𝐵)) → 𝐴𝑈)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 205  wa 396  w3a 1086   = wceq 1539  wex 1782  wcel 2106  wral 3064  Vcvv 3432  wss 3887   class class class wbr 5074  Oncon0 6266  cen 8730  cdom 8731  Univcgru 10546
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2709  ax-sep 5223  ax-nul 5230  ax-pow 5288  ax-pr 5352  ax-un 7588
This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1783  df-nf 1787  df-sb 2068  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2816  df-nfc 2889  df-ne 2944  df-ral 3069  df-rex 3070  df-rab 3073  df-v 3434  df-sbc 3717  df-dif 3890  df-un 3892  df-in 3894  df-ss 3904  df-pss 3906  df-nul 4257  df-if 4460  df-pw 4535  df-sn 4562  df-pr 4564  df-op 4568  df-uni 4840  df-br 5075  df-opab 5137  df-tr 5192  df-id 5489  df-eprel 5495  df-po 5503  df-so 5504  df-fr 5544  df-we 5546  df-xp 5595  df-rel 5596  df-cnv 5597  df-co 5598  df-dm 5599  df-rn 5600  df-res 5601  df-ima 5602  df-ord 6269  df-on 6270  df-iota 6391  df-fun 6435  df-fn 6436  df-f 6437  df-f1 6438  df-fo 6439  df-f1o 6440  df-fv 6441  df-ov 7278  df-oprab 7279  df-mpo 7280  df-er 8498  df-map 8617  df-en 8734  df-dom 8735  df-gru 10547
This theorem is referenced by:  gruina  10574  grur1  10576
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