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

Theorem nvel 4176
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 4175 . 2  |-  -.  _V  e.  _V
2 elex 2782 . 2  |-  ( _V  e.  A  ->  _V  e.  _V )
31, 2mto 663 1  |-  -.  _V  e.  A
Colors of variables: wff set class
Syntax hints:   -. wn 3    e. wcel 2175   _Vcvv 2771
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 615  ax-in2 616  ax-5 1469  ax-gen 1471  ax-ie1 1515  ax-ie2 1516  ax-8 1526  ax-4 1532  ax-17 1548  ax-i9 1552  ax-ial 1556  ax-13 2177  ax-14 2178  ax-ext 2186  ax-sep 4161
This theorem depends on definitions:  df-bi 117  df-tru 1375  df-fal 1378  df-nf 1483  df-sb 1785  df-clab 2191  df-cleq 2197  df-clel 2200  df-v 2773
This theorem is referenced by: (None)
  Copyright terms: Public domain W3C validator