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Theorem wfgru 9635
Description: The wellfounded part of a universe is another universe. (Contributed by Mario Carneiro, 17-Jun-2013.)
Assertion
Ref Expression
wfgru (𝑈 ∈ Univ → (𝑈 (𝑅1 “ On)) ∈ Univ)

Proof of Theorem wfgru
Dummy variables 𝑥 𝑦 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 dftr3 4754 . . 3 (Tr (𝑅1 “ On) ↔ ∀𝑥 (𝑅1 “ On)𝑥 (𝑅1 “ On))
2 r1elssi 8665 . . 3 (𝑥 (𝑅1 “ On) → 𝑥 (𝑅1 “ On))
31, 2mprgbir 2926 . 2 Tr (𝑅1 “ On)
4 pwwf 8667 . . . . 5 (𝑥 (𝑅1 “ On) ↔ 𝒫 𝑥 (𝑅1 “ On))
54biimpi 206 . . . 4 (𝑥 (𝑅1 “ On) → 𝒫 𝑥 (𝑅1 “ On))
6 prwf 8671 . . . . 5 ((𝑥 (𝑅1 “ On) ∧ 𝑦 (𝑅1 “ On)) → {𝑥, 𝑦} ∈ (𝑅1 “ On))
76ralrimiva 2965 . . . 4 (𝑥 (𝑅1 “ On) → ∀𝑦 (𝑅1 “ On){𝑥, 𝑦} ∈ (𝑅1 “ On))
8 frn 6051 . . . . . . 7 (𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On))
9 vex 3201 . . . . . . . . . 10 𝑦 ∈ V
109rnex 7097 . . . . . . . . 9 ran 𝑦 ∈ V
1110r1elss 8666 . . . . . . . 8 (ran 𝑦 (𝑅1 “ On) ↔ ran 𝑦 (𝑅1 “ On))
12 uniwf 8679 . . . . . . . 8 (ran 𝑦 (𝑅1 “ On) ↔ ran 𝑦 (𝑅1 “ On))
1311, 12bitr3i 266 . . . . . . 7 (ran 𝑦 (𝑅1 “ On) ↔ ran 𝑦 (𝑅1 “ On))
148, 13sylib 208 . . . . . 6 (𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On))
1514ax-gen 1721 . . . . 5 𝑦(𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On))
1615a1i 11 . . . 4 (𝑥 (𝑅1 “ On) → ∀𝑦(𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On)))
175, 7, 163jca 1241 . . 3 (𝑥 (𝑅1 “ On) → (𝒫 𝑥 (𝑅1 “ On) ∧ ∀𝑦 (𝑅1 “ On){𝑥, 𝑦} ∈ (𝑅1 “ On) ∧ ∀𝑦(𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On))))
1817rgen 2921 . 2 𝑥 (𝑅1 “ On)(𝒫 𝑥 (𝑅1 “ On) ∧ ∀𝑦 (𝑅1 “ On){𝑥, 𝑦} ∈ (𝑅1 “ On) ∧ ∀𝑦(𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On)))
19 ingru 9634 . 2 ((Tr (𝑅1 “ On) ∧ ∀𝑥 (𝑅1 “ On)(𝒫 𝑥 (𝑅1 “ On) ∧ ∀𝑦 (𝑅1 “ On){𝑥, 𝑦} ∈ (𝑅1 “ On) ∧ ∀𝑦(𝑦:𝑥 (𝑅1 “ On) → ran 𝑦 (𝑅1 “ On)))) → (𝑈 ∈ Univ → (𝑈 (𝑅1 “ On)) ∈ Univ))
203, 18, 19mp2an 708 1 (𝑈 ∈ Univ → (𝑈 (𝑅1 “ On)) ∈ Univ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  w3a 1037  wal 1480  wcel 1989  wral 2911  cin 3571  wss 3572  𝒫 cpw 4156  {cpr 4177   cuni 4434  Tr wtr 4750  ran crn 5113  cima 5115  Oncon0 5721  wf 5882  𝑅1cr1 8622  Univcgru 9609
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1721  ax-4 1736  ax-5 1838  ax-6 1887  ax-7 1934  ax-8 1991  ax-9 1998  ax-10 2018  ax-11 2033  ax-12 2046  ax-13 2245  ax-ext 2601  ax-rep 4769  ax-sep 4779  ax-nul 4787  ax-pow 4841  ax-pr 4904  ax-un 6946
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1485  df-ex 1704  df-nf 1709  df-sb 1880  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2752  df-ne 2794  df-ral 2916  df-rex 2917  df-reu 2918  df-rab 2920  df-v 3200  df-sbc 3434  df-csb 3532  df-dif 3575  df-un 3577  df-in 3579  df-ss 3586  df-pss 3588  df-nul 3914  df-if 4085  df-pw 4158  df-sn 4176  df-pr 4178  df-tp 4180  df-op 4182  df-uni 4435  df-int 4474  df-iun 4520  df-br 4652  df-opab 4711  df-mpt 4728  df-tr 4751  df-id 5022  df-eprel 5027  df-po 5033  df-so 5034  df-fr 5071  df-we 5073  df-xp 5118  df-rel 5119  df-cnv 5120  df-co 5121  df-dm 5122  df-rn 5123  df-res 5124  df-ima 5125  df-pred 5678  df-ord 5724  df-on 5725  df-lim 5726  df-suc 5727  df-iota 5849  df-fun 5888  df-fn 5889  df-f 5890  df-f1 5891  df-fo 5892  df-f1o 5893  df-fv 5894  df-ov 6650  df-oprab 6651  df-mpt2 6652  df-om 7063  df-1st 7165  df-2nd 7166  df-wrecs 7404  df-recs 7465  df-rdg 7503  df-map 7856  df-r1 8624  df-rank 8625  df-gru 9610
This theorem is referenced by: (None)
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