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Theorem elom3 8545
Description: A simplification of elom 7068 assuming the Axiom of Infinity. (Contributed by NM, 30-May-2003.)
Assertion
Ref Expression
elom3  |-  ( A  e.  om  <->  A. x
( Lim  x  ->  A  e.  x ) )
Distinct variable group:    x, A

Proof of Theorem elom3
StepHypRef Expression
1 elom 7068 . 2  |-  ( A  e.  om  <->  ( A  e.  On  /\  A. x
( Lim  x  ->  A  e.  x ) ) )
2 limom 7080 . . . . 5  |-  Lim  om
3 omex 8540 . . . . . 6  |-  om  e.  _V
4 limeq 5735 . . . . . . 7  |-  ( x  =  om  ->  ( Lim  x  <->  Lim  om ) )
5 eleq2 2690 . . . . . . 7  |-  ( x  =  om  ->  ( A  e.  x  <->  A  e.  om ) )
64, 5imbi12d 334 . . . . . 6  |-  ( x  =  om  ->  (
( Lim  x  ->  A  e.  x )  <->  ( Lim  om 
->  A  e.  om ) ) )
73, 6spcv 3299 . . . . 5  |-  ( A. x ( Lim  x  ->  A  e.  x )  ->  ( Lim  om  ->  A  e.  om )
)
82, 7mpi 20 . . . 4  |-  ( A. x ( Lim  x  ->  A  e.  x )  ->  A  e.  om )
9 nnon 7071 . . . 4  |-  ( A  e.  om  ->  A  e.  On )
108, 9syl 17 . . 3  |-  ( A. x ( Lim  x  ->  A  e.  x )  ->  A  e.  On )
1110pm4.71ri 665 . 2  |-  ( A. x ( Lim  x  ->  A  e.  x )  <-> 
( A  e.  On  /\ 
A. x ( Lim  x  ->  A  e.  x ) ) )
121, 11bitr4i 267 1  |-  ( A  e.  om  <->  A. x
( Lim  x  ->  A  e.  x ) )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    <-> wb 196    /\ wa 384   A.wal 1481    = wceq 1483    e. wcel 1990   Oncon0 5723   Lim wlim 5724   omcom 7065
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906  ax-un 6949  ax-inf2 8538
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-tr 4753  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-we 5075  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-om 7066
This theorem is referenced by:  dfom4  8546  dfom5  8547
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