Definition df-cco 12780

Description: Define the composition operation of a category. (Contributed by Mario Carneiro, 2-Jan-2017.)

Assertion

Ref	Expression
df-cco	⊢ comp = Slot ;15

Detailed syntax breakdown of Definition df-cco

Step	Hyp	Ref	Expression
1		cco 12767	. 2 class comp
2		c1 7880	. . . 4 class 1
3		c5 9044	. . . 4 class 5
4	2, 3	cdc 9457	. . 3 class ;15
5	4	cslot 12677	. 2 class Slot ;15
6	1, 5	wceq 1364	1 wff comp = Slot ;15

This definition is referenced by:  ccoid  12908  ccoslid  12909