Definition df-cntr 17751

Description: Define the center of a magma, which is the elements that commute with all others. (Contributed by Stefan O'Rear, 5-Sep-2015.)

Assertion

Ref	Expression
df-cntr	|- Cntr = ( m e. _V |-> ( (Cntz ` m ) ` ( Base ` m ) ) )

Detailed syntax breakdown of Definition df-cntr

Step	Hyp	Ref	Expression
1		ccntr 17749	. 2 class Cntr
2		vm	. . 3 setvar m
3		cvv 3200	. . 3 class _V
4	2	cv 1482	. . . . 5 class m
5		cbs 15857	. . . . 5 class Base
6	4, 5	cfv 5888	. . . 4 class ( Base ` m )
7		ccntz 17748	. . . . 5 class Cntz
8	4, 7	cfv 5888	. . . 4 class (Cntz ` m )
9	6, 8	cfv 5888	. . 3 class ( (Cntz ` m ) ` ( Base ` m ) )
10	2, 3, 9	cmpt 4729	. 2 class ( m e. _V |-> ( (Cntz ` m ) ` ( Base ` m ) ) )
11	1, 10	wceq 1483	1 wff Cntr = ( m e. _V |-> ( (Cntz ` m ) ` ( Base ` m ) ) )

This definition is referenced by:  cntrval  17752