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Theorem bj-ssom 9395
Description: A characterization of subclasses of  om. (Contributed by BJ, 30-Nov-2019.) (Proof modification is discouraged.)
Assertion
Ref Expression
bj-ssom Ind 
C_  C_  om
Distinct variable group:   ,

Proof of Theorem bj-ssom
Dummy variable is distinct from all other variables.
StepHypRef Expression
1 ssint 3622 . . 3 
C_  |^| {  | Ind  }  {  | Ind  }  C_
2 df-ral 2305 . . 3  {  | Ind  }  C_ 
{  | Ind  }  C_
3 vex 2554 . . . . . 6 
_V
4 bj-indeq 9388 . . . . . 6 Ind Ind
53, 4elab 2681 . . . . 5  {  | Ind  } Ind
65imbi1i 227 . . . 4  {  | Ind  } 
C_ Ind  C_
76albii 1356 . . 3  {  | Ind  } 
C_ Ind  C_
81, 2, 73bitrri 196 . 2 Ind 
C_  C_  |^|
{  | Ind  }
9 bj-dfom 9392 . . . 4  om  |^|
{  | Ind  }
109eqcomi 2041 . . 3  |^| {  | Ind  }  om
1110sseq2i 2964 . 2 
C_  |^| {  | Ind  }  C_  om
128, 11bitri 173 1 Ind 
C_  C_  om
Colors of variables: wff set class
Syntax hints:   wi 4   wb 98  wal 1240   wcel 1390   {cab 2023  wral 2300    C_ wss 2911   |^|cint 3606   omcom 4256  Ind wind 9385
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629  ax-5 1333  ax-7 1334  ax-gen 1335  ax-ie1 1379  ax-ie2 1380  ax-8 1392  ax-10 1393  ax-11 1394  ax-i12 1395  ax-bndl 1396  ax-4 1397  ax-17 1416  ax-i9 1420  ax-ial 1424  ax-i5r 1425  ax-ext 2019
This theorem depends on definitions:  df-bi 110  df-tru 1245  df-nf 1347  df-sb 1643  df-clab 2024  df-cleq 2030  df-clel 2033  df-nfc 2164  df-ral 2305  df-v 2553  df-in 2918  df-ss 2925  df-int 3607  df-iom 4257  df-bj-ind 9386
This theorem is referenced by:  bj-om  9396
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