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Mirrors > Home > ILE Home > Th. List > dmexg | Unicode version |
Description: The domain of a set is a set. Corollary 6.8(2) of [TakeutiZaring] p. 26. (Contributed by NM, 7-Apr-1995.) |
Ref | Expression |
---|---|
dmexg |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | uniexg 4417 | . 2 | |
2 | uniexg 4417 | . 2 | |
3 | ssun1 3285 | . . . 4 | |
4 | dmrnssfld 4867 | . . . 4 | |
5 | 3, 4 | sstri 3151 | . . 3 |
6 | ssexg 4121 | . . 3 | |
7 | 5, 6 | mpan 421 | . 2 |
8 | 1, 2, 7 | 3syl 17 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wcel 2136 cvv 2726 cun 3114 wss 3116 cuni 3789 cdm 4604 crn 4605 |
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 699 ax-5 1435 ax-7 1436 ax-gen 1437 ax-ie1 1481 ax-ie2 1482 ax-8 1492 ax-10 1493 ax-11 1494 ax-i12 1495 ax-bndl 1497 ax-4 1498 ax-17 1514 ax-i9 1518 ax-ial 1522 ax-i5r 1523 ax-13 2138 ax-14 2139 ax-ext 2147 ax-sep 4100 ax-pow 4153 ax-pr 4187 ax-un 4411 |
This theorem depends on definitions: df-bi 116 df-3an 970 df-tru 1346 df-nf 1449 df-sb 1751 df-eu 2017 df-mo 2018 df-clab 2152 df-cleq 2158 df-clel 2161 df-nfc 2297 df-rex 2450 df-v 2728 df-un 3120 df-in 3122 df-ss 3129 df-pw 3561 df-sn 3582 df-pr 3583 df-op 3585 df-uni 3790 df-br 3983 df-opab 4044 df-cnv 4612 df-dm 4614 df-rn 4615 |
This theorem is referenced by: dmex 4870 iprc 4872 exse2 4978 xpexr2m 5045 elxp4 5091 cnvexg 5141 coexg 5148 dmfex 5377 cofunexg 6077 offval3 6102 1stvalg 6110 tposexg 6226 erexb 6526 f1vrnfibi 6910 shftfvalg 10760 ennnfonelemp1 12339 xmetunirn 12998 |
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