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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 4987 | . 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 2799 dom cdm 4718 |
| 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 4201 ax-pow 4257 ax-pr 4292 ax-un 4523 |
| 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 2801 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3888 df-br 4083 df-opab 4145 df-cnv 4726 df-dm 4728 df-rn 4729 |
| This theorem is referenced by: ofmres 6279 fo1st 6301 tfrlem8 6462 rdgtfr 6518 rdgruledefgg 6519 rdgon 6530 mapprc 6797 ixpprc 6864 ixpssmap2g 6872 ixpssmapg 6873 bren 6893 brdomg 6895 fundmen 6957 xpassen 6985 mapen 7003 ssenen 7008 hashfacen 11053 shftfval 11327 prdsvallem 13300 prdsval 13301 blfn 14509 metuex 14513 |
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