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| Mirrors > Home > ILE Home > Th. List > ssrelrel | Unicode version | ||
| Description: A subclass relationship determined by ordered triples. Use relrelss 4844 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 2939 |
. . . 4
| |
| 2 | 1 | alrimiv 1754 |
. . 3
|
| 3 | 2 | alrimivv 1755 |
. 2
|
| 4 | elvvv 4403 |
. . . . . . . 8
| |
| 5 | eleq1 2100 |
. . . . . . . . . . . . . 14
| |
| 6 | eleq1 2100 |
. . . . . . . . . . . . . 14
| |
| 7 | 5, 6 | imbi12d 223 |
. . . . . . . . . . . . 13
|
| 8 | 7 | biimprcd 149 |
. . . . . . . . . . . 12
|
| 9 | 8 | alimi 1344 |
. . . . . . . . . . 11
|
| 10 | 19.23v 1763 |
. . . . . . . . . . 11
| |
| 11 | 9, 10 | sylib 127 |
. . . . . . . . . 10
|
| 12 | 11 | 2alimi 1345 |
. . . . . . . . 9
|
| 13 | 19.23vv 1764 |
. . . . . . . . 9
| |
| 14 | 12, 13 | sylib 127 |
. . . . . . . 8
|
| 15 | 4, 14 | syl5bi 141 |
. . . . . . 7
|
| 16 | 15 | com23 72 |
. . . . . 6
|
| 17 | 16 | a2d 23 |
. . . . 5
|
| 18 | 17 | alimdv 1759 |
. . . 4
|
| 19 | dfss2 2934 |
. . . 4
| |
| 20 | dfss2 2934 |
. . . 4
| |
| 21 | 18, 19, 20 | 3imtr4g 194 |
. . 3
|
| 22 | 21 | com12 27 |
. 2
|
| 23 | 3, 22 | impbid2 131 |
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-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 |
| This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-opab 3819 df-xp 4351 |
| This theorem is referenced by: eqrelrel 4441 |
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