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Mirrors > Home > MPE Home > Th. List > df-fi | Unicode version |
Description: Function whose value is the class of all the finite intersections of the elements of . (Contributed by FL, 27-Apr-2008.) |
Ref | Expression |
---|---|
df-fi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cfi 7890 | . 2 | |
2 | vx | . . 3 | |
3 | cvv 3109 | . . 3 | |
4 | vz | . . . . . . 7 | |
5 | 4 | cv 1394 | . . . . . 6 |
6 | vy | . . . . . . . 8 | |
7 | 6 | cv 1394 | . . . . . . 7 |
8 | 7 | cint 4286 | . . . . . 6 |
9 | 5, 8 | wceq 1395 | . . . . 5 |
10 | 2 | cv 1394 | . . . . . . 7 |
11 | 10 | cpw 4012 | . . . . . 6 |
12 | cfn 7536 | . . . . . 6 | |
13 | 11, 12 | cin 3474 | . . . . 5 |
14 | 9, 6, 13 | wrex 2808 | . . . 4 |
15 | 14, 4 | cab 2442 | . . 3 |
16 | 2, 3, 15 | cmpt 4510 | . 2 |
17 | 1, 16 | wceq 1395 | 1 |
Colors of variables: wff setvar class |
This definition is referenced by: fival 7892 |
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