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Theorem ssv 3124
Description: Any class is a subclass of the universal class. (Contributed by NM, 31-Oct-1995.)
Assertion
Ref Expression
ssv  |-  A  C_  _V

Proof of Theorem ssv
Dummy variable  x is distinct from all other variables.
StepHypRef Expression
1 elex 2700 . 2  |-  ( x  e.  A  ->  x  e.  _V )
21ssriv 3106 1  |-  A  C_  _V
Colors of variables: wff set class
Syntax hints:   _Vcvv 2689    C_ wss 3076
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-11 1485  ax-4 1488  ax-17 1507  ax-i9 1511  ax-ial 1515  ax-i5r 1516  ax-ext 2122
This theorem depends on definitions:  df-bi 116  df-nf 1438  df-sb 1737  df-clab 2127  df-cleq 2133  df-clel 2136  df-v 2691  df-in 3082  df-ss 3089
This theorem is referenced by:  ddifss  3319  inv1  3404  unv  3405  vss  3415  disj2  3423  pwv  3743  trv  4046  xpss  4655  djussxp  4692  dmv  4763  dmresi  4882  resid  4883  ssrnres  4989  rescnvcnv  5009  cocnvcnv1  5057  relrelss  5073  dffn2  5282  oprabss  5865  ofmres  6042  f1stres  6065  f2ndres  6066  fiintim  6825  djuf1olemr  6947  endjusym  6989  dju1p1e2  7070  suplocexprlemell  7545  seq3val  10262  seqvalcd  10263  seq3-1  10264  seqf  10265  seq3p1  10266  seqf2  10268  seq1cd  10269  seqp1cd  10270  setscom  12038  upxp  12480  uptx  12482  cnmptid  12489  cnmpt1st  12496  cnmpt2nd  12497
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