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| Mirrors > Home > ILE Home > Th. List > dmex | Unicode version | ||
| Description: The domain of a set is a set. Corollary 6.8(2) of [TakeutiZaring] p. 26. (Contributed by NM, 7-Jul-2008.) |
| Ref | Expression |
|---|---|
| dmex.1 |
|
| Ref | Expression |
|---|---|
| dmex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmex.1 |
. 2
| |
| 2 | dmexg 5048 |
. 2
| |
| 3 | 1, 2 | ax-mp 5 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-opab 4194 df-cnv 4784 df-dm 4786 df-rn 4787 |
| This theorem is used by: ofmres 6373 fo1st 6395 tfrlem8 6593 rdgtfr 6649 rdgruledefgg 6650 rdgon 6661 mapprc 6930 ixpprc 7005 ixpssmap2g 7013 ixpssmapg 7014 bren 7034 brdomg 7036 fundmen 7098 xpassen 7132 mapen 7150 ssenen 7156 hashfacen 11306 shftfval 11608 prdsvallem 13680 prdsval 14280 blfn 14997 metuex 15001 |
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