Definition df-cco 13505

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 13492	. 2 class comp
2		c1 8180	. . . 4 class 1
3		c5 9360	. . . 4 class 5
4	2, 3	cdc 9781	. . 3 class ;15
5	4	cslot 13400	. 2 class Slot ;15
6	1, 5	wceq 1402	1 wff comp = Slot ;15

This definition is used by:  ccondx  13639  ccoid  13640  ccoslid  13641