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| Mirrors > Home > MPE Home > Th. List > neissex | Structured version Visualization version Unicode version | ||
| Description: For any neighborhood |
| Ref | Expression |
|---|---|
| neissex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | neii2 20912 |
. 2
| |
| 2 | opnneiss 20922 |
. . . . . . . 8
| |
| 3 | 2 | 3expb 1266 |
. . . . . . 7
|
| 4 | 3 | adantrrr 761 |
. . . . . 6
|
| 5 | 4 | adantlr 751 |
. . . . 5
|
| 6 | simplll 798 |
. . . . . . . . 9
| |
| 7 | simpll 790 |
. . . . . . . . . . . . 13
| |
| 8 | simpr 477 |
. . . . . . . . . . . . 13
| |
| 9 | eqid 2622 |
. . . . . . . . . . . . . . 15
| |
| 10 | 9 | neii1 20910 |
. . . . . . . . . . . . . 14
|
| 11 | 10 | adantr 481 |
. . . . . . . . . . . . 13
|
| 12 | 9 | opnssneib 20919 |
. . . . . . . . . . . . 13
|
| 13 | 7, 8, 11, 12 | syl3anc 1326 |
. . . . . . . . . . . 12
|
| 14 | 13 | biimpa 501 |
. . . . . . . . . . 11
|
| 15 | 14 | anasss 679 |
. . . . . . . . . 10
|
| 16 | 15 | adantr 481 |
. . . . . . . . 9
|
| 17 | simpr 477 |
. . . . . . . . 9
| |
| 18 | neiss 20913 |
. . . . . . . . 9
| |
| 19 | 6, 16, 17, 18 | syl3anc 1326 |
. . . . . . . 8
|
| 20 | 19 | ex 450 |
. . . . . . 7
|
| 21 | 20 | adantrrl 760 |
. . . . . 6
|
| 22 | 21 | alrimiv 1855 |
. . . . 5
|
| 23 | 5, 22 | jca 554 |
. . . 4
|
| 24 | 23 | ex 450 |
. . 3
|
| 25 | 24 | reximdv2 3014 |
. 2
|
| 26 | 1, 25 | mpd 15 |
1
|
| Colors of variables: wff setvar class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 |
| This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 df-top 20699 df-nei 20902 |
| This theorem is referenced by: (None) |
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