MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  prcnel Structured version   Visualization version   GIF version

Theorem prcnel 3469
Description: A proper class doesn't belong to any class. (Contributed by Glauco Siliprandi, 17-Aug-2020.) (Proof shortened by AV, 14-Nov-2020.)
Assertion
Ref Expression
prcnel 𝐴 ∈ V → ¬ 𝐴𝑉)

Proof of Theorem prcnel
StepHypRef Expression
1 elex 3465 . 2 (𝐴𝑉𝐴 ∈ V)
21con3i 154 1 𝐴 ∈ V → ¬ 𝐴𝑉)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wcel 2132  Vcvv 3444
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1805  ax-4 1819  ax-5 1920  ax-6 1977  ax-7 2018  ax-8 2134  ax-9 2142  ax-ext 2724
This theorem depends on definitions:  df-bi 209  df-an 399  df-tru 1553  df-ex 1790  df-sb 2081  df-clab 2731  df-cleq 2744  df-clel 2827  df-v 3446
This theorem is referenced by:  suppco  8170  fundmge2nop0  14501  fun2dmnop0  14503  vtxval  29136  iedgval  29137  xoromon  35330  fmlafvel  35673  isinf2  37837  eliin2f  45620  dfatprc  47662  afvprc  47676  afv2prc  47758
  Copyright terms: Public domain W3C validator