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Theorem 1ex 7729
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 7681 . 2  |-  1  e.  CC
21elexi 2672 1  |-  1  e.  _V
Colors of variables: wff set class
Syntax hints:    e. wcel 1465   _Vcvv 2660   CCcc 7586   1c1 7589
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 1408  ax-gen 1410  ax-ie1 1454  ax-ie2 1455  ax-8 1467  ax-4 1472  ax-17 1491  ax-i9 1495  ax-ial 1499  ax-ext 2099  ax-1cn 7681
This theorem depends on definitions:  df-bi 116  df-sb 1721  df-clab 2104  df-cleq 2110  df-clel 2113  df-v 2662
This theorem is referenced by:  nn1suc  8703  nn0ind-raph  9126  fzprval  9817  fztpval  9818  m1expcl2  10270  1exp  10277  facnn  10428  fac0  10429  prhash2ex  10510  ege2le3  11291  1nprm  11707  dvexp  12755  dvef  12767  isomninnlem  13121
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