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| Mirrors > Home > MPE Home > Th. List > fconstmpt | Structured version Visualization version Unicode version | ||
| Description: Representation of a
constant function using the mapping operation.
(Note that |
| Ref | Expression |
|---|---|
| fconstmpt |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | velsn 4193 |
. . . 4
| |
| 2 | 1 | anbi2i 730 |
. . 3
|
| 3 | 2 | opabbii 4717 |
. 2
|
| 4 | df-xp 5120 |
. 2
| |
| 5 | df-mpt 4730 |
. 2
| |
| 6 | 3, 4, 5 | 3eqtr4i 2654 |
1
|
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