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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 3091 | . . . 4 | |
2 | 1 | eximdv 1852 | . . 3 |
3 | vex 2689 | . . . 4 | |
4 | 3 | eldm2 4737 | . . 3 |
5 | 3 | eldm2 4737 | . . 3 |
6 | 2, 4, 5 | 3imtr4g 204 | . 2 |
7 | 6 | ssrdv 3103 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wex 1468 wcel 1480 wss 3071 cop 3530 cdm 4539 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2121 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-nf 1437 df-sb 1736 df-clab 2126 df-cleq 2132 df-clel 2135 df-nfc 2270 df-v 2688 df-un 3075 df-in 3077 df-ss 3084 df-sn 3533 df-pr 3534 df-op 3536 df-br 3930 df-dm 4549 |
This theorem is referenced by: dmeq 4739 dmv 4755 rnss 4769 dmiin 4785 dmxpss2 4971 ssxpbm 4974 ssxp1 4975 cocnvres 5063 relrelss 5065 funssxp 5292 fvun1 5487 fndmdif 5525 fneqeql2 5529 tposss 6143 smores 6189 smores2 6191 tfrlemibfn 6225 tfrlemiubacc 6227 tfr1onlembfn 6241 tfr1onlemubacc 6243 tfr1onlemres 6246 tfrcllembfn 6254 tfrcllemubacc 6256 tfrcllemres 6259 frecuzrdgtcl 10185 frecuzrdgdomlem 10190 ennnfonelemex 11927 strleund 12047 strleun 12048 dvbssntrcntop 12822 |
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