Theorem 1ex 7754

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

Step	Hyp	Ref	Expression
1		ax-1cn 7706	. 2 |- 1 e. CC
2	1	elexi 2693	1 |- 1 e. _V

Syntax hints:   e. wcel 1480   _Vcvv 2681   CCcc 7611   1c1 7614

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 1423  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-4 1487  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-ext 2119  ax-1cn 7706

This theorem depends on definitions:  df-bi 116  df-sb 1736  df-clab 2124  df-cleq 2130  df-clel 2133  df-v 2683

This theorem is referenced by:  nn1suc  8732  nn0ind-raph  9161  fzprval  9855  fztpval  9856  m1expcl2  10308  1exp  10315  facnn  10466  fac0  10467  prhash2ex  10548  prodf1f  11305  ege2le3  11366  1nprm  11784  dvexp  12833  dvef  12845  isomninnlem  13214