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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 4843 | . 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 2125 Vcvv 2709 dom cdm 4579 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-13 2127 ax-14 2128 ax-ext 2136 ax-sep 4078 ax-pow 4130 ax-pr 4164 ax-un 4388 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-rex 2438 df-v 2711 df-un 3102 df-in 3104 df-ss 3111 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-br 3962 df-opab 4022 df-cnv 4587 df-dm 4589 df-rn 4590 |
This theorem is referenced by: ofmres 6074 fo1st 6095 tfrlem8 6255 rdgtfr 6311 rdgruledefgg 6312 rdgon 6323 mapprc 6586 ixpprc 6653 ixpssmap2g 6661 ixpssmapg 6662 bren 6681 brdomg 6682 fundmen 6740 xpassen 6764 mapen 6780 ssenen 6785 hashfacen 10684 shftfval 10698 |
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