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

Theorem prcnel 3515
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 3509 . 2 (𝐴𝑉𝐴 ∈ V)
21con3i 154 1 𝐴 ∈ V → ¬ 𝐴𝑉)
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wcel 2108  Vcvv 3488
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2711
This theorem depends on definitions:  df-bi 207  df-an 396  df-tru 1540  df-ex 1778  df-sb 2065  df-clab 2718  df-cleq 2732  df-clel 2819  df-v 3490
This theorem is referenced by:  suppco  8247  fundmge2nop0  14551  fun2dmnop0  14553  vtxval  29035  iedgval  29036  fmlafvel  35353  isinf2  37371  eliin2f  45006  dfatprc  47045  afvprc  47059  afv2prc  47141
  Copyright terms: Public domain W3C validator