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Mirrors > Home > MPE Home > Th. List > df-ucn | Structured version Visualization version Unicode version |
Description: Define a function on two uniform structures which value is the set of uniformly continuous functions from the first uniform structure to the second. A function is uniformly continuous if, roughly speaking, it is possible to guarantee that and be as close to each other as we please by requiring only that and are sufficiently close to each other; unlike ordinary continuity, the maximum distance between and cannot depend on and themselves. This formulation is the definition 1 of [BourbakiTop1] p. II.6. (Contributed by Thierry Arnoux, 16-Nov-2017.) |
Ref | Expression |
---|---|
df-ucn | Cnu UnifOn UnifOn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cucn 22079 | . 2 Cnu | |
2 | vu | . . 3 | |
3 | vv | . . 3 | |
4 | cust 22003 | . . . . 5 UnifOn | |
5 | 4 | crn 5115 | . . . 4 UnifOn |
6 | 5 | cuni 4436 | . . 3 UnifOn |
7 | vx | . . . . . . . . . . 11 | |
8 | 7 | cv 1482 | . . . . . . . . . 10 |
9 | vy | . . . . . . . . . . 11 | |
10 | 9 | cv 1482 | . . . . . . . . . 10 |
11 | vr | . . . . . . . . . . 11 | |
12 | 11 | cv 1482 | . . . . . . . . . 10 |
13 | 8, 10, 12 | wbr 4653 | . . . . . . . . 9 |
14 | vf | . . . . . . . . . . . 12 | |
15 | 14 | cv 1482 | . . . . . . . . . . 11 |
16 | 8, 15 | cfv 5888 | . . . . . . . . . 10 |
17 | 10, 15 | cfv 5888 | . . . . . . . . . 10 |
18 | vs | . . . . . . . . . . 11 | |
19 | 18 | cv 1482 | . . . . . . . . . 10 |
20 | 16, 17, 19 | wbr 4653 | . . . . . . . . 9 |
21 | 13, 20 | wi 4 | . . . . . . . 8 |
22 | 2 | cv 1482 | . . . . . . . . . 10 |
23 | 22 | cuni 4436 | . . . . . . . . 9 |
24 | 23 | cdm 5114 | . . . . . . . 8 |
25 | 21, 9, 24 | wral 2912 | . . . . . . 7 |
26 | 25, 7, 24 | wral 2912 | . . . . . 6 |
27 | 26, 11, 22 | wrex 2913 | . . . . 5 |
28 | 3 | cv 1482 | . . . . 5 |
29 | 27, 18, 28 | wral 2912 | . . . 4 |
30 | 28 | cuni 4436 | . . . . . 6 |
31 | 30 | cdm 5114 | . . . . 5 |
32 | cmap 7857 | . . . . 5 | |
33 | 31, 24, 32 | co 6650 | . . . 4 |
34 | 29, 14, 33 | crab 2916 | . . 3 |
35 | 2, 3, 6, 6, 34 | cmpt2 6652 | . 2 UnifOn UnifOn |
36 | 1, 35 | wceq 1483 | 1 Cnu UnifOn UnifOn |
Colors of variables: wff setvar class |
This definition is referenced by: ucnval 22081 |
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