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| Mirrors > Home > ILE Home > Th. List > df-cco | Unicode version | ||
| Description: Define the composition operation of a category. (Contributed by Mario Carneiro, 2-Jan-2017.) |
| Ref | Expression |
|---|---|
| df-cco |
 comp  Slot ;  |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cco 13492 |
. 2
comp | |
| 2 | c1 8180 |
. . . 4
| |
| 3 | c5 9360 |
. . . 4
| |
| 4 | 2, 3 | cdc 9781 |
. . 3
; |
| 5 | 4 | cslot 13400 |
. 2
Slot ; |
| 6 | 1, 5 | wceq 1402 |
1
 comp Slot ; |
| Colors of variables: wff set class |
| This definition is used by: ccondx 13639 ccoid 13640 ccoslid 13641 |
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