Description: The intersection of an image set, as an indexed intersection of function values. (Contributed by Thierry Arnoux, 15-Jun-2024)
Ref | Expression | ||
---|---|---|---|
Assertion | intimafv | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | dfimafn | |
|
2 | 1 | inteqd | |
3 | fvex | |
|
4 | 3 | rgenw | |
5 | iinabrex | |
|
6 | 4 5 | ax-mp | |
7 | eqcom | |
|
8 | 7 | rexbii | |
9 | 8 | abbii | |
10 | 9 | inteqi | |
11 | 6 10 | eqtr4i | |
12 | 2 11 | eqtr4di | |