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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 4951 | . 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 2177 Vcvv 2773 dom cdm 4683 |
| 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 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4170 ax-pow 4226 ax-pr 4261 ax-un 4488 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-rex 2491 df-v 2775 df-un 3174 df-in 3176 df-ss 3183 df-pw 3623 df-sn 3644 df-pr 3645 df-op 3647 df-uni 3857 df-br 4052 df-opab 4114 df-cnv 4691 df-dm 4693 df-rn 4694 |
| This theorem is referenced by: ofmres 6234 fo1st 6256 tfrlem8 6417 rdgtfr 6473 rdgruledefgg 6474 rdgon 6485 mapprc 6752 ixpprc 6819 ixpssmap2g 6827 ixpssmapg 6828 bren 6848 brdomg 6850 fundmen 6912 xpassen 6940 mapen 6958 ssenen 6963 hashfacen 11003 shftfval 11207 prdsvallem 13179 prdsval 13180 blfn 14388 metuex 14392 |
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