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Theorem ssv 3270
Description: Any class is a subclass of the universal class. Dual of 0ss 3561. (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 2833 . 2  |-  ( x  e.  A  ->  x  e.  _V )
21ssriv 3252 1  |-  A  C_  _V
Colors of variables:    wff set class
This proof depends on syntax axioms:   _Vcvv 2821    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-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-11 1559  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-v 2823  df-in 3226  df-ss 3233
This theorem is used by:  ddifss  3469  inv1  3559  unv  3560  vss  3568  disj2  3580  pwv  3934  trv  4241  xpss  4883  djussxp  4925  dmv  4997  dmresi  5118  resid  5120  ssrnres  5230  rescnvcnv  5250  cocnvcnv1  5298  relrelss  5314  dffn2  5535  oprabss  6174  ofmres  6369  f1stres  6393  f2ndres  6394  fiintim  7238  residfi  7254  djuf1olemr  7394  endjusym  7436  dju1p1e2  7549  suplocexprlemell  8080  seq3val  10897  seqvalcd  10898  seq3-1  10899  seqf  10901  seq3p1  10902  seqf2  10905  seq1cd  10906  seqp1cd  10907  seqclg  10909  seqfeq4g  10968  wrdv  11320  setscom  13392  gzsumwsubmcl  13801  gzsumcl  13804  prdsinvlem  14196  rngmgpf  14236  mgpf  14315  crngridl  14867  upxp  15373  uptx  15375  cnmptid  15382  cnmpt1st  15389  cnmpt2nd  15390
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