ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  nvel Unicode version

Theorem nvel 4261
Description: The universal class does not belong to any class. (Contributed by FL, 31-Dec-2006.)
Assertion
Ref Expression
nvel  |-  -.  _V  e.  A

Proof of Theorem nvel
StepHypRef Expression
1 vprc 4260 . 2  |-  -.  _V  e.  _V
2 elex 2833 . 2  |-  ( _V  e.  A  ->  _V  e.  _V )
31, 2mto 672 1  |-  -.  _V  e.  A
Colors of variables: wff set class
Syntax hints:   -. wn 3    e. wcel 2209   _Vcvv 2821
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-in1 623  ax-in2 624  ax-5 1500  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-13 2211  ax-14 2212  ax-ext 2220  ax-sep 4244
This theorem depends on definitions:  df-bi 117  df-tru 1405  df-fal 1408  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-v 2823
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator