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| Mirrors > Home > ILE Home > Th. List > ssrelrel | Unicode version | ||
| Description: A subclass relationship determined by ordered triples. Use relrelss 5206 to express the antecedent in terms of the relation predicate. (Contributed by NM, 17-Dec-2008.) (Proof shortened by Andrew Salmon, 27-Aug-2011.) |
| Ref | Expression |
|---|---|
| ssrelrel |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3186 |
. . . 4
| |
| 2 | 1 | alrimiv 1896 |
. . 3
|
| 3 | 2 | alrimivv 1897 |
. 2
|
| 4 | elvvv 4736 |
. . . . . . . 8
| |
| 5 | eleq1 2267 |
. . . . . . . . . . . . . 14
| |
| 6 | eleq1 2267 |
. . . . . . . . . . . . . 14
| |
| 7 | 5, 6 | imbi12d 234 |
. . . . . . . . . . . . 13
|
| 8 | 7 | biimprcd 160 |
. . . . . . . . . . . 12
|
| 9 | 8 | alimi 1477 |
. . . . . . . . . . 11
|
| 10 | 19.23v 1905 |
. . . . . . . . . . 11
| |
| 11 | 9, 10 | sylib 122 |
. . . . . . . . . 10
|
| 12 | 11 | 2alimi 1478 |
. . . . . . . . 9
|
| 13 | 19.23vv 1906 |
. . . . . . . . 9
| |
| 14 | 12, 13 | sylib 122 |
. . . . . . . 8
|
| 15 | 4, 14 | biimtrid 152 |
. . . . . . 7
|
| 16 | 15 | com23 78 |
. . . . . 6
|
| 17 | 16 | a2d 26 |
. . . . 5
|
| 18 | 17 | alimdv 1901 |
. . . 4
|
| 19 | ssalel 3180 |
. . . 4
| |
| 20 | ssalel 3180 |
. . . 4
| |
| 21 | 18, 19, 20 | 3imtr4g 205 |
. . 3
|
| 22 | 21 | com12 30 |
. 2
|
| 23 | 3, 22 | impbid2 143 |
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-io 710 ax-5 1469 ax-7 1470 ax-gen 1471 ax-ie1 1515 ax-ie2 1516 ax-8 1526 ax-10 1527 ax-11 1528 ax-i12 1529 ax-bndl 1531 ax-4 1532 ax-17 1548 ax-i9 1552 ax-ial 1556 ax-i5r 1557 ax-14 2178 ax-ext 2186 ax-sep 4161 ax-pow 4217 ax-pr 4252 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1375 df-nf 1483 df-sb 1785 df-clab 2191 df-cleq 2197 df-clel 2200 df-nfc 2336 df-v 2773 df-un 3169 df-in 3171 df-ss 3178 df-pw 3617 df-sn 3638 df-pr 3639 df-op 3641 df-opab 4105 df-xp 4679 |
| This theorem is referenced by: eqrelrel 4774 |
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