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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 4927 | . 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 2164 Vcvv 2760 dom cdm 4660 |
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 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4148 ax-pow 4204 ax-pr 4239 ax-un 4465 |
This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-rex 2478 df-v 2762 df-un 3158 df-in 3160 df-ss 3167 df-pw 3604 df-sn 3625 df-pr 3626 df-op 3628 df-uni 3837 df-br 4031 df-opab 4092 df-cnv 4668 df-dm 4670 df-rn 4671 |
This theorem is referenced by: ofmres 6190 fo1st 6212 tfrlem8 6373 rdgtfr 6429 rdgruledefgg 6430 rdgon 6441 mapprc 6708 ixpprc 6775 ixpssmap2g 6783 ixpssmapg 6784 bren 6803 brdomg 6804 fundmen 6862 xpassen 6886 mapen 6904 ssenen 6909 hashfacen 10910 shftfval 10968 blfn 14050 metuex 14054 |
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