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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 4781 is restricted to the relation's domain. (Contributed by Thierry Arnoux, 25-Jan-2018.) |
| Ref | Expression |
|---|---|
| ssrel2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssel 3195 |
. . . 4
| |
| 2 | 1 | a1d 22 |
. . 3
|
| 3 | 2 | ralrimivv 2589 |
. 2
|
| 4 | eleq1 2270 |
. . . . . . . . . . . 12
| |
| 5 | eleq1 2270 |
. . . . . . . . . . . 12
| |
| 6 | 4, 5 | imbi12d 234 |
. . . . . . . . . . 11
|
| 7 | 6 | biimprcd 160 |
. . . . . . . . . 10
|
| 8 | 7 | ralimi 2571 |
. . . . . . . . 9
|
| 9 | 8 | ralimi 2571 |
. . . . . . . 8
|
| 10 | r19.23v 2617 |
. . . . . . . . . 10
| |
| 11 | 10 | ralbii 2514 |
. . . . . . . . 9
|
| 12 | r19.23v 2617 |
. . . . . . . . 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 1903 |
. . . 4
|
| 18 | ssalel 3189 |
. . . . 5
| |
| 19 | elxp2 4711 |
. . . . . . 7
| |
| 20 | 19 | imbi2i 226 |
. . . . . 6
|
| 21 | 20 | albii 1494 |
. . . . 5
|
| 22 | 18, 21 | bitri 184 |
. . . 4
|
| 23 | ssalel 3189 |
. . . 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-14 2181 ax-ext 2189 ax-sep 4178 ax-pow 4234 ax-pr 4269 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-clab 2194 df-cleq 2200 df-clel 2203 df-nfc 2339 df-ral 2491 df-rex 2492 df-v 2778 df-un 3178 df-in 3180 df-ss 3187 df-pw 3628 df-sn 3649 df-pr 3650 df-op 3652 df-opab 4122 df-xp 4699 |
| This theorem is referenced by: (None) |
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