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Theorem 1ex 7483
Description: 1 is a set. Common special case. (Contributed by David A. Wheeler, 7-Jul-2016.)
Assertion
Ref Expression
1ex  |-  1  e.  _V

Proof of Theorem 1ex
StepHypRef Expression
1 ax-1cn 7438 . 2  |-  1  e.  CC
21elexi 2631 1  |-  1  e.  _V
Colors of variables: wff set class
Syntax hints:    e. wcel 1438   _Vcvv 2619   CCcc 7348   1c1 7351
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1381  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-4 1445  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-ext 2070  ax-1cn 7438
This theorem depends on definitions:  df-bi 115  df-sb 1693  df-clab 2075  df-cleq 2081  df-clel 2084  df-v 2621
This theorem is referenced by:  nn1suc  8441  nn0ind-raph  8863  fzprval  9496  fztpval  9497  m1expcl2  9977  1exp  9984  facnn  10135  fac0  10136  prhash2ex  10217  ege2le3  10961  1nprm  11374
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