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| Mirrors > Home > MPE Home > Th. List > df-cco | Structured version Visualization version 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 15202 |
. 2
comp | |
| 2 | c1 9540 |
. . . 4
| |
| 3 | c5 10662 |
. . . 4
| |
| 4 | 2, 3 | cdc 11051 |
. . 3
; |
| 5 | 4 | cslot 15120 |
. 2
Slot ; |
| 6 | 1, 5 | wceq 1444 |
1
 comp Slot ; |
| Colors of variables: wff setvar class |
| This definition is referenced by: ccondx 15314 ccoid 15315 ressco 15317 catcoppccl 16003 catcfuccl 16004 catcxpccl 16092 |
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