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Theorem ssrab3 3334
Description: Subclass relation for a restricted class abstraction. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.)
Hypothesis
Ref Expression
ssrab3.1  |-  B  =  { x  e.  A  |  ph }
Assertion
Ref Expression
ssrab3  |-  B  C_  A
Distinct variable group:    x, A
Allowed substitution hints:    ph( x)    B( x)

Proof of Theorem ssrab3
StepHypRef Expression
1 ssrab3.1 . 2  |-  B  =  { x  e.  A  |  ph }
2 ssrab2 3333 . 2  |-  { x  e.  A  |  ph }  C_  A
31, 2eqsstri 3280 1  |-  B  C_  A
Colors of variables:    wff set class
This proof depends on syntax axioms:    = wceq 1402   {crab 2532    C_ wss 3220
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rab 2537  df-in 3226  df-ss 3233
This theorem is used by:  if0ss  3642  pcprecl  13097  pcprendvds  13098  4sqlem13m  13211  4sqlem14  13212  4sqlem17  13215  ballotfilemfmpn  13292  ballotfilemafi  13296  ballotfilembfi  13297  ballotfilemth  13339  nmzsubg  14072  nmznsg  14075  conjnmz  14141  conjnmzb  14142  nzrring  14599  lringnzr  14609  rrgeq0  14682  rrgss  14684  psrbagconf1o  15174  psrass1filem  15177  mpodvdsmulf1o  16284  fsumdvdsmul  16285  lgsfcl2  16330
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