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| Mirrors > Home > ILE Home > Th. List > ssoprab2b | Unicode version | ||
| Description: Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2b 4377. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.) |
| Ref | Expression |
|---|---|
| ssoprab2b |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nfoprab1 6080 |
. . . 4
| |
| 2 | nfoprab1 6080 |
. . . 4
| |
| 3 | 1, 2 | nfss 3221 |
. . 3
|
| 4 | nfoprab2 6081 |
. . . . 5
| |
| 5 | nfoprab2 6081 |
. . . . 5
| |
| 6 | 4, 5 | nfss 3221 |
. . . 4
|
| 7 | nfoprab3 6082 |
. . . . . 6
| |
| 8 | nfoprab3 6082 |
. . . . . 6
| |
| 9 | 7, 8 | nfss 3221 |
. . . . 5
|
| 10 | ssel 3222 |
. . . . . 6
| |
| 11 | oprabid 6060 |
. . . . . 6
| |
| 12 | oprabid 6060 |
. . . . . 6
| |
| 13 | 10, 11, 12 | 3imtr3g 204 |
. . . . 5
|
| 14 | 9, 13 | alrimi 1571 |
. . . 4
|
| 15 | 6, 14 | alrimi 1571 |
. . 3
|
| 16 | 3, 15 | alrimi 1571 |
. 2
|
| 17 | ssoprab2 6087 |
. 2
| |
| 18 | 16, 17 | impbii 126 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-setind 4641 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-ral 2516 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-oprab 6032 |
| This theorem is referenced by: eqoprab2b 6089 |
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