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| Mirrors > Home > ILE Home > Th. List > ssoprab2 | Unicode version | ||
| Description: Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2 4012. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.) |
| Ref | Expression |
|---|---|
| ssoprab2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | id 19 |
. . . . . . . . . 10
| |
| 2 | 1 | anim2d 320 |
. . . . . . . . 9
|
| 3 | 2 | alimi 1344 |
. . . . . . . 8
|
| 4 | exim 1490 |
. . . . . . . 8
| |
| 5 | 3, 4 | syl 14 |
. . . . . . 7
|
| 6 | 5 | alimi 1344 |
. . . . . 6
|
| 7 | exim 1490 |
. . . . . 6
| |
| 8 | 6, 7 | syl 14 |
. . . . 5
|
| 9 | 8 | alimi 1344 |
. . . 4
|
| 10 | exim 1490 |
. . . 4
| |
| 11 | 9, 10 | syl 14 |
. . 3
|
| 12 | 11 | ss2abdv 3013 |
. 2
|
| 13 | df-oprab 5516 |
. 2
| |
| 14 | df-oprab 5516 |
. 2
| |
| 15 | 12, 13, 14 | 3sstr4g 2986 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 |
| This theorem depends on definitions: df-bi 110 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-in 2924 df-ss 2931 df-oprab 5516 |
| This theorem is referenced by: ssoprab2b 5562 |
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