Description: An alternative expression for J e. Locally A when A passes to open subspaces: A space is locally A if every point is contained in an open neighborhood with property A . (Contributed by Mario Carneiro, 2-Mar-2015)
Ref | Expression | ||
---|---|---|---|
Hypotheses | restlly.1 | |
|
islly2.2 | |
||
Assertion | islly2 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | restlly.1 | |
|
2 | islly2.2 | |
|
3 | llytop | |
|
4 | 3 | adantl | |
5 | simplr | |
|
6 | 4 | adantr | |
7 | 2 | topopn | |
8 | 6 7 | syl | |
9 | simpr | |
|
10 | llyi | |
|
11 | 5 8 9 10 | syl3anc | |
12 | 3simpc | |
|
13 | 12 | reximi | |
14 | 11 13 | syl | |
15 | 14 | ralrimiva | |
16 | 4 15 | jca | |
17 | simprl | |
|
18 | elssuni | |
|
19 | 18 2 | sseqtrrdi | |
20 | 19 | adantl | |
21 | ssralv | |
|
22 | 20 21 | syl | |
23 | simpllr | |
|
24 | simplrl | |
|
25 | simprl | |
|
26 | inopn | |
|
27 | 23 24 25 26 | syl3anc | |
28 | vex | |
|
29 | inss1 | |
|
30 | 28 29 | elpwi2 | |
31 | 30 | a1i | |
32 | 27 31 | elind | |
33 | simplrr | |
|
34 | simprrl | |
|
35 | 33 34 | elind | |
36 | inss2 | |
|
37 | 36 | a1i | |
38 | restabs | |
|
39 | 23 37 25 38 | syl3anc | |
40 | oveq2 | |
|
41 | 40 | eleq1d | |
42 | oveq1 | |
|
43 | 42 | eleq1d | |
44 | 43 | raleqbi1dv | |
45 | 1 | ralrimivva | |
46 | 45 | ad3antrrr | |
47 | simprrr | |
|
48 | 44 46 47 | rspcdva | |
49 | elrestr | |
|
50 | 23 25 24 49 | syl3anc | |
51 | 41 48 50 | rspcdva | |
52 | 39 51 | eqeltrrd | |
53 | eleq2 | |
|
54 | oveq2 | |
|
55 | 54 | eleq1d | |
56 | 53 55 | anbi12d | |
57 | 56 | rspcev | |
58 | 32 35 52 57 | syl12anc | |
59 | 58 | rexlimdvaa | |
60 | 59 | anassrs | |
61 | 60 | ralimdva | |
62 | 22 61 | syld | |
63 | 62 | ralrimdva | |
64 | 63 | impr | |
65 | islly | |
|
66 | 17 64 65 | sylanbrc | |
67 | 16 66 | impbida | |