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Definition df-v 2617
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 2615 . 2 class V
2 vx . . . 4 setvar 𝑥
32, 2weq 1435 . . 3 wff 𝑥 = 𝑥
43, 2cab 2071 . 2 class {𝑥𝑥 = 𝑥}
51, 4wceq 1287 1 wff V = {𝑥𝑥 = 𝑥}
Colors of variables: wff set class
This definition is referenced by:  vex  2618  int0  3685  ruv  4339  dcextest  4369  snexxph  6608
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