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Theorem 3ex 8991
Description: 3 is a set (common case). (Contributed by David A. Wheeler, 8-Dec-2018.)
Assertion
Ref Expression
3ex  |-  3  e.  _V

Proof of Theorem 3ex
StepHypRef Expression
1 3cn 8990 . 2  |-  3  e.  CC
21elexi 2749 1  |-  3  e.  _V
Colors of variables: wff set class
Syntax hints:    e. wcel 2148   _Vcvv 2737   CCcc 7806   3c3 8967
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1447  ax-7 1448  ax-gen 1449  ax-ie1 1493  ax-ie2 1494  ax-8 1504  ax-11 1506  ax-4 1510  ax-17 1526  ax-i9 1530  ax-ial 1534  ax-i5r 1535  ax-ext 2159  ax-resscn 7900  ax-1re 7902  ax-addrcl 7905
This theorem depends on definitions:  df-bi 117  df-nf 1461  df-sb 1763  df-clab 2164  df-cleq 2170  df-clel 2173  df-v 2739  df-in 3135  df-ss 3142  df-2 8974  df-3 8975
This theorem is referenced by:  fztpval  10078  lgsdir2lem3  14302
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