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| Description: Equivalence of ordered pair abstraction subclass and implication. |
| Ref | Expression |
|---|---|
| ssopab2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hbopab1 3562 |
. . . 4
| |
| 2 | hbopab1 3562 |
. . . 4
| |
| 3 | 1, 2 | hbss 2614 |
. . 3
|
| 4 | hbopab2 3563 |
. . . . 5
| |
| 5 | hbopab2 3563 |
. . . . 5
| |
| 6 | 4, 5 | hbss 2614 |
. . . 4
|
| 7 | opex 3527 |
. . . . . 6
| |
| 8 | 7 | isseti 2297 |
. . . . 5
|
| 9 | copsexg 3537 |
. . . . . . . . 9
| |
| 10 | copsexg 3537 |
. . . . . . . . 9
| |
| 11 | 9, 10 | imbi12d 688 |
. . . . . . . 8
|
| 12 | ss2ab 2675 |
. . . . . . . . 9
| |
| 13 | ax-4 1319 |
. . . . . . . . 9
| |
| 14 | 12, 13 | sylbi 216 |
. . . . . . . 8
|
| 15 | 11, 14 | syl5bir 227 |
. . . . . . 7
|
| 16 | df-opab 3396 |
. . . . . . . 8
| |
| 17 | df-opab 3396 |
. . . . . . . 8
| |
| 18 | 16, 17 | sseq12i 2643 |
. . . . . . 7
|
| 19 | 15, 18 | syl5ib 223 |
. . . . . 6
|
| 20 | 19 | 19.23aiv 1674 |
. . . . 5
|
| 21 | 8, 20 | ax-mp 7 |
. . . 4
|
| 22 | 6, 21 | 19.21ai 1345 |
. . 3
|
| 23 | 3, 22 | 19.21ai 1345 |
. 2
|
| 24 | hba1 1350 |
. . . . 5
| |
| 25 | hba1 1350 |
. . . . . . 7
| |
| 26 | ax-4 1319 |
. . . . . . . 8
| |
| 27 | 26 | anim2d 620 |
. . . . . . 7
|
| 28 | 25, 27 | eximd 1410 |
. . . . . 6
|
| 29 | 28 | a4s 1330 |
. . . . 5
|
| 30 | 24, 29 | eximd 1410 |
. . . 4
|
| 31 | 30 | ss2abdv 2680 |
. . 3
|
| 32 | 31, 16, 17 | 3sstr4g 2658 |
. 2
|
| 33 | 23, 32 | impbii 174 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssopab2i 3574 cnvss 4134 cotrOLD 4303 cnvsymOLD 4305 dffun2 4431 sfvlim 10296 ssoprab2g 14333 inclrel 14444 heiborlem27 15981 |
| 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-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 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 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-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-opab 3396 |