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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 cannot appear free in .) (Contributed by NM, 12-Oct-1999.) (Revised by Mario Carneiro, 16-Nov-2013.) |
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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