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Theorem nvel 4245
Description: The universal class does not belong to any class. (Contributed by FL, 31-Dec-2006.)
Assertion
Ref Expression
nvel ¬ V ∈ 𝐴

Proof of Theorem nvel
StepHypRef Expression
1 vprc 4244 . 2 ¬ V ∈ V
2 elex 2827 . 2 (V ∈ 𝐴 → V ∈ V)
31, 2mto 668 1 ¬ V ∈ 𝐴
Colors of variables: wff set class
Syntax hints:  ¬ wn 3  wcel 2205  Vcvv 2815
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 619  ax-in2 620  ax-5 1496  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-13 2207  ax-14 2208  ax-ext 2216  ax-sep 4230
This theorem depends on definitions:  df-bi 117  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-clab 2221  df-cleq 2227  df-clel 2230  df-v 2817
This theorem is referenced by: (None)
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