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| Mirrors > Home > ILE Home > Th. List > ssrel2 | Unicode version | ||
| Description: A subclass relationship depends only on a relation's ordered pairs. This version of ssrel 4762 is restricted to the relation's domain. (Contributed by Thierry Arnoux, 25-Jan-2018.) |
| Ref | Expression |
|---|---|
| ssrel2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3186 |
. . . 4
| |
| 2 | 1 | a1d 22 |
. . 3
|
| 3 | 2 | ralrimivv 2586 |
. 2
|
| 4 | eleq1 2267 |
. . . . . . . . . . . 12
| |
| 5 | eleq1 2267 |
. . . . . . . . . . . 12
| |
| 6 | 4, 5 | imbi12d 234 |
. . . . . . . . . . 11
|
| 7 | 6 | biimprcd 160 |
. . . . . . . . . 10
|
| 8 | 7 | ralimi 2568 |
. . . . . . . . 9
|
| 9 | 8 | ralimi 2568 |
. . . . . . . 8
|
| 10 | r19.23v 2614 |
. . . . . . . . . 10
| |
| 11 | 10 | ralbii 2511 |
. . . . . . . . 9
|
| 12 | r19.23v 2614 |
. . . . . . . . 9
| |
| 13 | 11, 12 | bitri 184 |
. . . . . . . 8
|
| 14 | 9, 13 | sylib 122 |
. . . . . . 7
|
| 15 | 14 | com23 78 |
. . . . . 6
|
| 16 | 15 | a2d 26 |
. . . . 5
|
| 17 | 16 | alimdv 1901 |
. . . 4
|
| 18 | ssalel 3180 |
. . . . 5
| |
| 19 | elxp2 4692 |
. . . . . . 7
| |
| 20 | 19 | imbi2i 226 |
. . . . . 6
|
| 21 | 20 | albii 1492 |
. . . . 5
|
| 22 | 18, 21 | bitri 184 |
. . . 4
|
| 23 | ssalel 3180 |
. . . 4
| |
| 24 | 17, 22, 23 | 3imtr4g 205 |
. . 3
|
| 25 | 24 | com12 30 |
. 2
|
| 26 | 3, 25 | 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-ral 2488 df-rex 2489 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 4680 |
| This theorem is referenced by: (None) |
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