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| Mirrors > Home > ILE Home > Th. List > neipsm | Unicode version | ||
| Description: A neighborhood of a set is a neighborhood of every point in the set. Proposition 1 of [BourbakiTop1] p. I.2. (Contributed by FL, 16-Nov-2006.) (Revised by Jim Kingdon, 22-Mar-2023.) |
| Ref | Expression |
|---|---|
| neips.1 |
|
| Ref | Expression |
|---|---|
| neipsm |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snssi 3859 |
. . . . . 6
| |
| 2 | neiss 15251 |
. . . . . 6
| |
| 3 | 1, 2 | syl3an3 1313 |
. . . . 5
|
| 4 | 3 | 3exp 1233 |
. . . 4
|
| 5 | 4 | ralrimdv 2629 |
. . 3
|
| 6 | 5 | 3ad2ant1 1049 |
. 2
|
| 7 | eleq1w 2299 |
. . . . . . 7
| |
| 8 | 7 | cbvexv 1974 |
. . . . . 6
|
| 9 | r19.28mv 3620 |
. . . . . 6
| |
| 10 | 8, 9 | sylbir 135 |
. . . . 5
|
| 11 | 10 | 3ad2ant3 1051 |
. . . 4
|
| 12 | ssrab2 3333 |
. . . . . . . . . 10
| |
| 13 | uniopn 15102 |
. . . . . . . . . 10
| |
| 14 | 12, 13 | mpan2 429 |
. . . . . . . . 9
|
| 15 | 14 | ad2antrr 492 |
. . . . . . . 8
|
| 16 | sseq1 3271 |
. . . . . . . . . . . . . . . 16
| |
| 17 | 16 | elrab 2982 |
. . . . . . . . . . . . . . 15
|
| 18 | elunii 3940 |
. . . . . . . . . . . . . . 15
| |
| 19 | 17, 18 | sylan2br 288 |
. . . . . . . . . . . . . 14
|
| 20 | 19 | an12s 571 |
. . . . . . . . . . . . 13
|
| 21 | 20 | rexlimiva 2663 |
. . . . . . . . . . . 12
|
| 22 | 21 | ralimi 2613 |
. . . . . . . . . . 11
|
| 23 | dfss3 3236 |
. . . . . . . . . . 11
| |
| 24 | 22, 23 | sylibr 134 |
. . . . . . . . . 10
|
| 25 | 24 | adantl 277 |
. . . . . . . . 9
|
| 26 | unissb 3965 |
. . . . . . . . . 10
| |
| 27 | sseq1 3271 |
. . . . . . . . . . . 12
| |
| 28 | 27 | elrab 2982 |
. . . . . . . . . . 11
|
| 29 | 28 | simprbi 275 |
. . . . . . . . . 10
|
| 30 | 26, 29 | mprgbir 2608 |
. . . . . . . . 9
|
| 31 | 25, 30 | jctir 313 |
. . . . . . . 8
|
| 32 | sseq2 3272 |
. . . . . . . . . 10
| |
| 33 | sseq1 3271 |
. . . . . . . . . 10
| |
| 34 | 32, 33 | anbi12d 477 |
. . . . . . . . 9
|
| 35 | 34 | rspcev 2929 |
. . . . . . . 8
|
| 36 | 15, 31, 35 | syl2anc 415 |
. . . . . . 7
|
| 37 | 36 | ex 115 |
. . . . . 6
|
| 38 | 37 | anim2d 337 |
. . . . 5
|
| 39 | 38 | 3adant3 1048 |
. . . 4
|
| 40 | 11, 39 | sylbid 150 |
. . 3
|
| 41 | ssel2 3243 |
. . . . . . 7
| |
| 42 | neips.1 |
. . . . . . . 8
| |
| 43 | 42 | isneip 15247 |
. . . . . . 7
|
| 44 | 41, 43 | sylan2 286 |
. . . . . 6
|
| 45 | 44 | anassrs 404 |
. . . . 5
|
| 46 | 45 | ralbidva 2546 |
. . . 4
|
| 47 | 46 | 3adant3 1048 |
. . 3
|
| 48 | 42 | isnei 15245 |
. . . 4
|
| 49 | 48 | 3adant3 1048 |
. . 3
|
| 50 | 40, 47, 49 | 3imtr4d 203 |
. 2
|
| 51 | 6, 50 | impbid 129 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-coll 4246 ax-sep 4249 ax-pow 4311 ax-pr 4346 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-reu 2535 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-iun 4014 df-br 4131 df-opab 4193 df-mpt 4194 df-id 4438 df-xp 4780 df-rel 4781 df-cnv 4782 df-co 4783 df-dm 4784 df-rn 4785 df-res 4786 df-ima 4787 df-iota 5337 df-fun 5379 df-fn 5380 df-f 5381 df-f1 5382 df-fo 5383 df-f1o 5384 df-fv 5385 df-top 15099 df-nei 15240 |
| This theorem is used by: (None) |
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