Metamath Proof Explorer


Definition df-tskm

Description: A function that maps a set x to the smallest Tarski class that contains the set. (Contributed by FL, 30-Dec-2010)

Ref Expression
Assertion df-tskm tarskiMap = x V y Tarski | x y

Detailed syntax breakdown

Step Hyp Ref Expression
0 ctskm class tarskiMap
1 vx setvar x
2 cvv class V
3 vy setvar y
4 ctsk class Tarski
5 1 cv setvar x
6 3 cv setvar y
7 5 6 wcel wff x y
8 7 3 4 crab class y Tarski | x y
9 8 cint class y Tarski | x y
10 1 2 9 cmpt class x V y Tarski | x y
11 0 10 wceq wff tarskiMap = x V y Tarski | x y