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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 4539 | . 2 ⊢ (A ∈ V → dom A ∈ V) | |
3 | 1, 2 | ax-mp 7 | 1 ⊢ dom A ∈ V |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1390 Vcvv 2551 dom cdm 4288 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-io 629 ax-5 1333 ax-7 1334 ax-gen 1335 ax-ie1 1379 ax-ie2 1380 ax-8 1392 ax-10 1393 ax-11 1394 ax-i12 1395 ax-bndl 1396 ax-4 1397 ax-13 1401 ax-14 1402 ax-17 1416 ax-i9 1420 ax-ial 1424 ax-i5r 1425 ax-ext 2019 ax-sep 3866 ax-pow 3918 ax-pr 3935 ax-un 4136 |
This theorem depends on definitions: df-bi 110 df-3an 886 df-tru 1245 df-nf 1347 df-sb 1643 df-eu 1900 df-mo 1901 df-clab 2024 df-cleq 2030 df-clel 2033 df-nfc 2164 df-rex 2306 df-v 2553 df-un 2916 df-in 2918 df-ss 2925 df-pw 3353 df-sn 3373 df-pr 3374 df-op 3376 df-uni 3572 df-br 3756 df-opab 3810 df-cnv 4296 df-dm 4298 df-rn 4299 |
This theorem is referenced by: ofmres 5705 fo1st 5726 tfrlem8 5875 rdgtfr 5901 rdgruledefgg 5902 bren 6164 brdomg 6165 fundmen 6222 xpassen 6240 |
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