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| Description: A version of the Axiom of Union with no distinct variable conditions. |
| Ref | Expression |
|---|---|
| axunnd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axunndlem1 6099 |
. . . 4
| |
| 2 | hbnae 1507 |
. . . . . 6
| |
| 3 | hbnae 1507 |
. . . . . 6
| |
| 4 | 2, 3 | hban 1356 |
. . . . 5
|
| 5 | hbnae 1507 |
. . . . . . 7
| |
| 6 | hbnae 1507 |
. . . . . . 7
| |
| 7 | 5, 6 | hban 1356 |
. . . . . 6
|
| 8 | ax-17 1317 |
. . . . . . . 8
| |
| 9 | dveel1 1747 |
. . . . . . . . . 10
| |
| 10 | 9 | adantr 425 |
. . . . . . . . 9
|
| 11 | dveel2 1748 |
. . . . . . . . . 10
| |
| 12 | 11 | adantl 424 |
. . . . . . . . 9
|
| 13 | 10, 12 | hband 1469 |
. . . . . . . 8
|
| 14 | 8, 13 | hbexd 1472 |
. . . . . . 7
|
| 15 | 4, 14, 10 | hbimd 1468 |
. . . . . 6
|
| 16 | 7, 15 | hbald 1471 |
. . . . 5
|
| 17 | nd5 6094 |
. . . . . . . . 9
| |
| 18 | 17 | adantr 425 |
. . . . . . . 8
|
| 19 | 18 | imdistani 491 |
. . . . . . 7
|
| 20 | hba1 1350 |
. . . . . . . . 9
| |
| 21 | 7, 20 | hban 1356 |
. . . . . . . 8
|
| 22 | elequ2 1497 |
. . . . . . . . . . . . 13
| |
| 23 | elequ1 1496 |
. . . . . . . . . . . . 13
| |
| 24 | 22, 23 | anbi12d 690 |
. . . . . . . . . . . 12
|
| 25 | 24 | a1i 8 |
. . . . . . . . . . 11
|
| 26 | 4, 13, 25 | cbvexd 1704 |
. . . . . . . . . 10
|
| 27 | 26 | adantr 425 |
. . . . . . . . 9
|
| 28 | 22 | a4s 1330 |
. . . . . . . . . 10
|
| 29 | 28 | adantl 424 |
. . . . . . . . 9
|
| 30 | 27, 29 | imbi12d 688 |
. . . . . . . 8
|
| 31 | 21, 30 | albid 1459 |
. . . . . . 7
|
| 32 | 19, 31 | syl 12 |
. . . . . 6
|
| 33 | 32 | ex 402 |
. . . . 5
|
| 34 | 4, 16, 33 | cbvexd 1704 |
. . . 4
|
| 35 | 1, 34 | mpbii 210 |
. . 3
|
| 36 | 35 | ex 402 |
. 2
|
| 37 | hbae 1505 |
. . . 4
| |
| 38 | hbae 1505 |
. . . . . 6
| |
| 39 | elirrv 5700 |
. . . . . . . 8
| |
| 40 | elequ2 1497 |
. . . . . . . . 9
| |
| 41 | simpl 346 |
. . . . . . . . 9
| |
| 42 | 40, 41 | syl5bi 225 |
. . . . . . . 8
|
| 43 | 39, 42 | mtoi 122 |
. . . . . . 7
|
| 44 | 43 | a4s 1330 |
. . . . . 6
|
| 45 | 38, 44 | nexd 1457 |
. . . . 5
|
| 46 | 45 | pm2.21d 94 |
. . . 4
|
| 47 | 37, 46 | 19.21ai 1345 |
. . 3
|
| 48 | 19.8a 1376 |
. . 3
| |
| 49 | 47, 48 | syl 12 |
. 2
|
| 50 | hbae 1505 |
. . . 4
| |
| 51 | hbae 1505 |
. . . . . 6
| |
| 52 | elirrv 5700 |
. . . . . . . 8
| |
| 53 | elequ1 1496 |
. . . . . . . . 9
| |
| 54 | simpr 350 |
. . . . . . . . 9
| |
| 55 | 53, 54 | syl5bi 225 |
. . . . . . . 8
|
| 56 | 52, 55 | mtoi 122 |
. . . . . . 7
|
| 57 | 56 | a4s 1330 |
. . . . . 6
|
| 58 | 51, 57 | nexd 1457 |
. . . . 5
|
| 59 | 58 | pm2.21d 94 |
. . . 4
|
| 60 | 50, 59 | 19.21ai 1345 |
. . 3
|
| 61 | 60, 48 | syl 12 |
. 2
|
| 62 | 36, 49, 61 | pm2.61ii 144 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: zfcndun 6119 axunprim 13787 |
| 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-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 ax-un 3790 ax-reg 5695 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-3an 860 df-ex 1327 df-sb 1536 df-eu 1775 df-mo 1776 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-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-br 3339 df-opab 3396 df-eprel 3583 df-fr 3625 |