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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 4994 | . 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 2200 Vcvv 2800 dom cdm 4723 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-cnv 4731 df-dm 4733 df-rn 4734 |
| This theorem is referenced by: ofmres 6293 fo1st 6315 tfrlem8 6479 rdgtfr 6535 rdgruledefgg 6536 rdgon 6547 mapprc 6816 ixpprc 6883 ixpssmap2g 6891 ixpssmapg 6892 bren 6912 brdomg 6914 fundmen 6976 xpassen 7009 mapen 7027 ssenen 7032 hashfacen 11090 shftfval 11372 prdsvallem 13345 prdsval 13346 blfn 14555 metuex 14559 |
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