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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 4428 is restricted to the relation's domain. (Contributed by Thierry Arnoux, 25-Jan-2018.) |
Ref | Expression |
---|---|
ssrel2 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 2939 | . . . 4 | |
2 | 1 | a1d 22 | . . 3 |
3 | 2 | ralrimivv 2400 | . 2 |
4 | eleq1 2100 | . . . . . . . . . . . 12 | |
5 | eleq1 2100 | . . . . . . . . . . . 12 | |
6 | 4, 5 | imbi12d 223 | . . . . . . . . . . 11 |
7 | 6 | biimprcd 149 | . . . . . . . . . 10 |
8 | 7 | ralimi 2384 | . . . . . . . . 9 |
9 | 8 | ralimi 2384 | . . . . . . . 8 |
10 | r19.23v 2425 | . . . . . . . . . 10 | |
11 | 10 | ralbii 2330 | . . . . . . . . 9 |
12 | r19.23v 2425 | . . . . . . . . 9 | |
13 | 11, 12 | bitri 173 | . . . . . . . 8 |
14 | 9, 13 | sylib 127 | . . . . . . 7 |
15 | 14 | com23 72 | . . . . . 6 |
16 | 15 | a2d 23 | . . . . 5 |
17 | 16 | alimdv 1759 | . . . 4 |
18 | dfss2 2934 | . . . . 5 | |
19 | elxp2 4363 | . . . . . . 7 | |
20 | 19 | imbi2i 215 | . . . . . 6 |
21 | 20 | albii 1359 | . . . . 5 |
22 | 18, 21 | bitri 173 | . . . 4 |
23 | dfss2 2934 | . . . 4 | |
24 | 17, 22, 23 | 3imtr4g 194 | . . 3 |
25 | 24 | com12 27 | . 2 |
26 | 3, 25 | impbid2 131 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 97 wb 98 wal 1241 wceq 1243 wcel 1393 wral 2306 wrex 2307 wss 2917 cop 3378 cxp 4343 |
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-ral 2311 df-rex 2312 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: (None) |
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