Description: Domain and codomain of the mapping operation; deduction form. (Contributed by Mario Carneiro, 13-Jan-2013)
Ref | Expression | ||
---|---|---|---|
Hypotheses | fmptd.1 | |
|
fmptd.2 | |
||
Assertion | fmptd | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fmptd.1 | |
|
2 | fmptd.2 | |
|
3 | 1 | ralrimiva | |
4 | 2 | fmpt | |
5 | 3 4 | sylib | |