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Mirrors > Home > ILE Home > Th. List > dmss | Unicode version |
Description: Subset theorem for domain. (Contributed by NM, 11-Aug-1994.) |
Ref | Expression |
---|---|
dmss |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 2993 | . . . 4 | |
2 | 1 | eximdv 1801 | . . 3 |
3 | vex 2604 | . . . 4 | |
4 | 3 | eldm2 4551 | . . 3 |
5 | 3 | eldm2 4551 | . . 3 |
6 | 2, 4, 5 | 3imtr4g 203 | . 2 |
7 | 6 | ssrdv 3005 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wex 1421 wcel 1433 wss 2973 cop 3401 cdm 4363 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-sn 3404 df-pr 3405 df-op 3407 df-br 3786 df-dm 4373 |
This theorem is referenced by: dmeq 4553 dmv 4569 rnss 4582 dmiin 4598 ssxpbm 4776 ssxp1 4777 relrelss 4864 funssxp 5080 fvun1 5260 fndmdif 5293 fneqeql2 5297 tposss 5884 smores 5930 smores2 5932 tfrlemibfn 5965 tfrlemiubacc 5967 frecuzrdgfn 9414 |
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