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Definition df-v 2536
Description: Define the universal class. Definition 5.20 of [TakeutiZaring] p. 21. Also Definition 2.9 of [Quine] p. 19. (Contributed by NM, 5-Aug-1993.)
Assertion
Ref Expression
df-v V = {xx = x}

Detailed syntax breakdown of Definition df-v
StepHypRef Expression
1 cvv 2534 . 2 class V
2 vx . . . 4 setvar x
32, 2weq 1375 . . 3 wff x = x
43, 2cab 2009 . 2 class {xx = x}
51, 4wceq 1374 1 wff V = {xx = x}
Colors of variables: wff set class
This definition is referenced by:  vex  2537  int0  3582  ruv  4188
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