| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| Description: Equivalence of abstraction subclass and implication. |
| Ref | Expression |
|---|---|
| ssopab2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hbopab1 2112 |
. . . 4
| |
| 2 | hbopab1 2112 |
. . . 4
| |
| 3 | 1, 2 | hbss 1501 |
. . 3
|
| 4 | hbopab2 2113 |
. . . . 5
| |
| 5 | hbopab2 2113 |
. . . . 5
| |
| 6 | 4, 5 | hbss 1501 |
. . . 4
|
| 7 | opex 1893 |
. . . . . 6
| |
| 8 | 7 | isseti 1352 |
. . . . 5
|
| 9 | copsexg 1902 |
. . . . . . . . 9
| |
| 10 | copsexg 1902 |
. . . . . . . . 9
| |
| 11 | 9, 10 | imbi12d 474 |
. . . . . . . 8
|
| 12 | ss2ab 1551 |
. . . . . . . . 9
| |
| 13 | ax-4 673 |
. . . . . . . . 9
| |
| 14 | 12, 13 | sylbi 174 |
. . . . . . . 8
|
| 15 | 11, 14 | syl5bir 184 |
. . . . . . 7
|
| 16 | df-opab 2098 |
. . . . . . . 8
| |
| 17 | df-opab 2098 |
. . . . . . . 8
| |
| 18 | 16, 17 | sseq12i 1526 |
. . . . . . 7
|
| 19 | 15, 18 | syl5ib 181 |
. . . . . 6
|
| 20 | 19 | 19.23aiv 952 |
. . . . 5
|
| 21 | 8, 20 | ax-mp 6 |
. . . 4
|
| 22 | 6, 21 | 19.21ai 740 |
. . 3
|
| 23 | 3, 22 | 19.21ai 740 |
. 2
|
| 24 | hba1 698 |
. . . . . 6
| |
| 25 | hba1 698 |
. . . . . . . 8
| |
| 26 | ax-4 673 |
. . . . . . . . 9
| |
| 27 | 26 | anim2d 433 |
. . . . . . . 8
|
| 28 | 25, 27 | 19.22d 744 |
. . . . . . 7
|
| 29 | 28 | a4s 682 |
. . . . . 6
|
| 30 | 24, 29 | 19.22d 744 |
. . . . 5
|
| 31 | 30 | 19.21aiv 943 |
. . . 4
|
| 32 | 31, 12 | sylibr 175 |
. . 3
|
| 33 | 32, 16, 17 | 3sstr4g 1541 |
. 2
|
| 34 | 23, 33 | impbi 139 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: ssopab2i 2120 cnvss 2512 cotr 2625 cnvsym 2626 dffun2 2674 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-13 804 ax-14 805 ax-16 922 ax-17 925 ax-ext 1074 ax-rep 1075 ax-pow 1077 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-dif 1489 df-un 1490 df-in 1491 df-ss 1492 df-nul 1708 df-pw 1799 df-sn 1811 df-pr 1812 df-op 1815 df-opab 2098 |