Definition df-cco 13433

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 13420	. 2 class comp
2		c1 8170	. . . 4 class 1
3		c5 9337	. . . 4 class 5
4	2, 3	cdc 9756	. . 3 class ;15
5	4	cslot 13329	. 2 class Slot ;15
6	1, 5	wceq 1402	1 wff comp = Slot ;15

This definition is referenced by:  ccondx  13567  ccoid  13568  ccoslid  13569