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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 5026 | . 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 2205 Vcvv 2815 dom cdm 4754 |
| 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-rex 2528 df-v 2817 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-cnv 4762 df-dm 4764 df-rn 4765 |
| This theorem is referenced by: ofmres 6342 fo1st 6364 tfrlem8 6562 rdgtfr 6618 rdgruledefgg 6619 rdgon 6630 mapprc 6899 ixpprc 6967 ixpssmap2g 6975 ixpssmapg 6976 bren 6996 brdomg 6998 fundmen 7060 xpassen 7094 mapen 7112 ssenen 7118 hashfacen 11233 shftfval 11531 prdsvallem 13564 prdsval 14115 blfn 14825 metuex 14829 |
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