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| Mirrors > Home > ILE Home > Th. List > dmex | GIF 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 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| dmex | ⊢ dom 𝐴 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmex.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | dmexg 5041 | . 2 ⊢ (𝐴 ∈ V → dom 𝐴 ∈ V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ dom 𝐴 ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2209 Vcvv 2821 dom cdm 4769 |
| 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 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 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 |
| This theorem 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 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-cnv 4777 df-dm 4779 df-rn 4780 |
| This theorem is referenced by: ofmres 6359 fo1st 6381 tfrlem8 6579 rdgtfr 6635 rdgruledefgg 6636 rdgon 6647 mapprc 6916 ixpprc 6991 ixpssmap2g 6999 ixpssmapg 7000 bren 7020 brdomg 7022 fundmen 7084 xpassen 7118 mapen 7136 ssenen 7142 hashfacen 11262 shftfval 11564 prdsvallem 13598 prdsval 14150 blfn 14860 metuex 14864 |
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