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| Mirrors > Home > MPE Home > Th. List > dmexd | Structured version Visualization version GIF version | ||
| Description: The domain of a set is a set. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| dmexd.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| Ref | Expression |
|---|---|
| dmexd | ⊢ (𝜑 → dom 𝐴 ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmexd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 2 | dmexg 7900 | . 2 ⊢ (𝐴 ∈ 𝑉 → dom 𝐴 ∈ V) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝜑 → dom 𝐴 ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 Vcvv 3457 dom cdm 5663 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2737 ax-sep 5259 ax-pr 5406 ax-un 7738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2744 df-cleq 2757 df-clel 2840 df-rab 3419 df-v 3459 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-cnv 5671 df-dm 5673 df-rn 5674 |
| This theorem is used by: fndmexd 7903 unxpwdom2 9553 wemapwe 9669 imadomg 10529 fpwwe2lem11 10637 fpwwe2lem12 10638 hashdmpropge2 14534 prdsplusg 17529 prdsmulr 17530 prdsvsca 17531 prdshom 17538 ssclem 17894 subsubc 17928 efgrcl 19809 dprdgrp 20101 dprdf 20102 dprdssv 20112 f1lindf 22002 decpmatval0 22951 pmatcollpw3lem 22970 ordtrest2lem 23390 ordtrest2 23391 mbfmulc2re 25838 mbfneg 25840 dvnf 26117 dvnbss 26118 dchrptlem3 27461 gsummpt2d 33409 gsumfs2d 33421 cycpmco2lem5 33490 cycpmconjslem2 33515 trclubgNEW 44377 omecl 47250 sssmf 47485 mbfresmf 47486 smfpimltxr 47494 smfpimgtxr 47527 smfres 47537 smfco 47549 iinfssc 49868 |
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