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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 4930 | 
. 2
 | |
| 3 | 1, 2 | ax-mp 5 | 
1
 | 
| Colors of variables: wff set class | 
| Syntax hints:     | 
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-cnv 4671 df-dm 4673 df-rn 4674 | 
| This theorem is referenced by: ofmres 6193 fo1st 6215 tfrlem8 6376 rdgtfr 6432 rdgruledefgg 6433 rdgon 6444 mapprc 6711 ixpprc 6778 ixpssmap2g 6786 ixpssmapg 6787 bren 6806 brdomg 6807 fundmen 6865 xpassen 6889 mapen 6907 ssenen 6912 hashfacen 10928 shftfval 10986 blfn 14107 metuex 14111 | 
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