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Theorem 3ex 9380
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 9379 . 2  |-  3  e.  CC
21elexi 2834 1  |-  3  e.  _V
Colors of variables:    wff set class
This proof depends on syntax axioms:    e. wcel 2209   _Vcvv 2821   CCcc 8177   3c3 9356
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  ax-resscn 8271  ax-1re 8273  ax-addrcl 8276
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  df-2 9363  df-3 9364
This theorem is used by:  fztpval  10490  lgsdir2lem3  16149  konigsberglem4  16732  konigsberglem5  16733
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