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| Description: A version of the Axiom of Regularity with no distinct variable conditions. |
| Ref | Expression |
|---|---|
| axregnd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hbnae 1507 |
. . . . . 6
| |
| 2 | hbnae 1507 |
. . . . . 6
| |
| 3 | 1, 2 | hban 1356 |
. . . . 5
|
| 4 | hbnae 1507 |
. . . . . . . 8
| |
| 5 | hbnae 1507 |
. . . . . . . 8
| |
| 6 | 4, 5 | hban 1356 |
. . . . . . 7
|
| 7 | dveel2 1748 |
. . . . . . . . 9
| |
| 8 | 7 | adantr 425 |
. . . . . . . 8
|
| 9 | dveel2 1748 |
. . . . . . . . . 10
| |
| 10 | 9 | adantl 424 |
. . . . . . . . 9
|
| 11 | 6, 10 | hbnd 1467 |
. . . . . . . 8
|
| 12 | 6, 8, 11 | hbimd 1468 |
. . . . . . 7
|
| 13 | elequ1 1496 |
. . . . . . . . 9
| |
| 14 | elequ1 1496 |
. . . . . . . . . 10
| |
| 15 | 14 | notbid 673 |
. . . . . . . . 9
|
| 16 | 13, 15 | imbi12d 688 |
. . . . . . . 8
|
| 17 | 16 | a1i 8 |
. . . . . . 7
|
| 18 | 6, 12, 17 | cbvald 1702 |
. . . . . 6
|
| 19 | 18 | anbi2d 678 |
. . . . 5
|
| 20 | 3, 19 | exbid 1460 |
. . . 4
|
| 21 | axregndlem2 6107 |
. . . 4
| |
| 22 | 20, 21 | syl5bi 225 |
. . 3
|
| 23 | 22 | ex 402 |
. 2
|
| 24 | axregndlem1 6106 |
. . 3
| |
| 25 | 24 | alequcoms 1503 |
. 2
|
| 26 | hbae 1505 |
. . . 4
| |
| 27 | elirrv 5700 |
. . . . . . . . . 10
| |
| 28 | elequ2 1497 |
. . . . . . . . . 10
| |
| 29 | 27, 28 | mtbii 784 |
. . . . . . . . 9
|
| 30 | 29 | a4s 1330 |
. . . . . . . 8
|
| 31 | 30 | a1d 15 |
. . . . . . 7
|
| 32 | 31 | a5i 1335 |
. . . . . 6
|
| 33 | 32 | anim2i 362 |
. . . . 5
|
| 34 | 33 | expcom 403 |
. . . 4
|
| 35 | 26, 34 | eximd 1410 |
. . 3
|
| 36 | 19.8a 1376 |
. . 3
| |
| 37 | 35, 36 | syl5 20 |
. 2
|
| 38 | 23, 25, 37 | pm2.61ii 144 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: zfcndreg 6121 axregprim 13789 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-13 1311 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-15 1751 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-reg 5695 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-ral 2109 df-rex 2110 df-v 2294 df-dif 2597 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 |