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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 ⊆ V

Proof of Theorem ssv
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 elex 2833 . 2 (𝑥 ∈ 𝐴 → 𝑥 ∈ V)
21ssriv 3252 1 𝐴 ⊆ V
Colors of variables:    wff set class
This proof depends on syntax axioms:  Vcvv 2821   ⊆ 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  7395  endjusym  7437  dju1p1e2  7550  suplocexprlemell  8081  seq3val  10912  seqvalcd  10913  seq3-1  10914  seqf  10916  seq3p1  10917  seqf2  10920  seq1cd  10921  seqp1cd  10922  seqclg  10924  seqfeq4g  10983  wrdv  11336  setscom  13444  gzsumwsubmcl  13854  gzsumcl  13857  prdsinvlem  14280  rngmgpf  14320  mgpf  14399  crngridl  14951  upxp  15464  uptx  15466  cnmptid  15473  cnmpt1st  15480  cnmpt2nd  15481
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