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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 1143 |
. . . . . 6
| |
| 2 | hbnae 1143 |
. . . . . 6
| |
| 3 | 1, 2 | hban 1006 |
. . . . 5
|
| 4 | hbnae 1143 |
. . . . . . . 8
| |
| 5 | hbnae 1143 |
. . . . . . . 8
| |
| 6 | 4, 5 | hban 1006 |
. . . . . . 7
|
| 7 | dveel2 1350 |
. . . . . . . . 9
| |
| 8 | 7 | adantr 389 |
. . . . . . . 8
|
| 9 | dveel2 1350 |
. . . . . . . . . 10
| |
| 10 | 9 | adantl 388 |
. . . . . . . . 9
|
| 11 | 6, 10 | hbnd 1105 |
. . . . . . . 8
|
| 12 | 6, 8, 11 | hbimd 1106 |
. . . . . . 7
|
| 13 | elequ1 1132 |
. . . . . . . . 9
| |
| 14 | elequ1 1132 |
. . . . . . . . . 10
| |
| 15 | 14 | negbid 609 |
. . . . . . . . 9
|
| 16 | 13, 15 | imbi12d 624 |
. . . . . . . 8
|
| 17 | 16 | a1i 8 |
. . . . . . 7
|
| 18 | 6, 12, 17 | cbvald 1315 |
. . . . . 6
|
| 19 | 18 | anbi2d 614 |
. . . . 5
|
| 20 | 3, 19 | exbid 1101 |
. . . 4
|
| 21 | axregndlem2 4927 |
. . . 4
| |
| 22 | 20, 21 | syl5bi 208 |
. . 3
|
| 23 | 22 | ex 373 |
. 2
|
| 24 | axregndlem1 4926 |
. . 3
| |
| 25 | 24 | alequcoms 1139 |
. 2
|
| 26 | hbae 1141 |
. . . 4
| |
| 27 | elirrv 4570 |
. . . . . . . . . 10
| |
| 28 | elequ2 1133 |
. . . . . . . . . 10
| |
| 29 | 27, 28 | mtbii 714 |
. . . . . . . . 9
|
| 30 | 29 | a4s 981 |
. . . . . . . 8
|
| 31 | 30 | a1d 12 |
. . . . . . 7
|
| 32 | 31 | a5i 986 |
. . . . . 6
|
| 33 | 32 | anim2i 335 |
. . . . 5
|
| 34 | 33 | expcom 374 |
. . . 4
|
| 35 | 26, 34 | 19.22d 1058 |
. . 3
|
| 36 | 19.8a 1025 |
. . 3
| |
| 37 | 35, 36 | syl5 21 |
. 2
|
| 38 | 23, 25, 37 | pm2.61ii 130 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: zfcndreg 4941 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-15 1353 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-reg 4565 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-ral 1641 df-rex 1642 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 |