Theorem 1ex 7768

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 7720	. 2 |- 1 e. CC
2	1	elexi 2698	1 |- 1 e. _V

Syntax hints:   e. wcel 1480   _Vcvv 2686   CCcc 7625   1c1 7628

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 2121  ax-1cn 7720

This theorem depends on definitions:  df-bi 116  df-sb 1736  df-clab 2126  df-cleq 2132  df-clel 2135  df-v 2688

This theorem is referenced by:  nn1suc  8746  nn0ind-raph  9175  fzprval  9869  fztpval  9870  m1expcl2  10322  1exp  10329  facnn  10480  fac0  10481  prhash2ex  10562  prodf1f  11319  ege2le3  11384  1nprm  11802  dvexp  12854  dvef  12866  isomninnlem  13235