Definition df-v 2571

Description: Define the universal class. Definition 5.20 of [TakeutiZaring] p. 21.

Assertion

Ref	Expression
df-v	|- _V = {x | x = x}

Detailed syntax breakdown of Definition df-v

Step	Hyp	Ref	Expression
1		cvv 2569	. 2 class _V
2		vx	. . . . 5 set x
3	2	cv 1614	. . . 4 class x
4	3, 3	wceq 1615	. . 3 wff x = x
5	4, 2	cab 2157	. 2 class {x | x = x}
6	1, 5	wceq 1615	1 wff _V = {x | x = x}

This definition is referenced by:  visset 2572  int0 3446  fo1st 5178  fo2nd 5179  ruv 5980  foo3 13004  domep 14740  elnev 17489

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