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Mirrors > Home > MPE Home > Th. List > df-mopn | Structured version Visualization version Unicode version |
Description: Define a function whose value is the family of open sets of a metric space. See elmopn 22247 for its main property. (Contributed by NM, 1-Sep-2006.) |
Ref | Expression |
---|---|
df-mopn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cmopn 19736 | . 2 | |
2 | vd | . . 3 | |
3 | cxmt 19731 | . . . . 5 | |
4 | 3 | crn 5115 | . . . 4 |
5 | 4 | cuni 4436 | . . 3 |
6 | 2 | cv 1482 | . . . . . 6 |
7 | cbl 19733 | . . . . . 6 | |
8 | 6, 7 | cfv 5888 | . . . . 5 |
9 | 8 | crn 5115 | . . . 4 |
10 | ctg 16098 | . . . 4 | |
11 | 9, 10 | cfv 5888 | . . 3 |
12 | 2, 5, 11 | cmpt 4729 | . 2 |
13 | 1, 12 | wceq 1483 | 1 |
Colors of variables: wff setvar class |
This definition is referenced by: mopnval 22243 isxms2 22253 setsmstopn 22283 tngtopn 22454 |
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