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| Mirrors > Home > MPE Home > Th. List > eldm | Structured version Visualization version GIF version | ||
| Description: Membership in a domain. Theorem 4 of [Suppes] p. 59. (Contributed by NM, 2-Apr-2004.) |
| Ref | Expression |
|---|---|
| eldm.1 | ⊢ 𝐴 ∈ V |
| Ref | Expression |
|---|---|
| eldm | ⊢ (𝐴 ∈ dom 𝐵 ↔ ∃𝑦 𝐴𝐵𝑦) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eldm.1 | . 2 ⊢ 𝐴 ∈ V | |
| 2 | eldmg 5842 | . 2 ⊢ (𝐴 ∈ V → (𝐴 ∈ dom 𝐵 ↔ ∃𝑦 𝐴𝐵𝑦)) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 ∈ dom 𝐵 ↔ ∃𝑦 𝐴𝐵𝑦) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 206 ∃wex 1781 ∈ wcel 2114 Vcvv 3427 class class class wbr 5074 dom cdm 5620 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2707 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2714 df-cleq 2727 df-clel 2810 df-rab 3388 df-v 3429 df-dif 3888 df-un 3890 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-op 4564 df-br 5075 df-dm 5630 |
| This theorem is referenced by: dmi 5865 dmep 5867 dmxp 5873 dmcoss 5919 dmcossOLD 5920 dmcosseq 5922 dmcosseqOLD 5923 dmcosseqOLDOLD 5924 dminss 6106 dmsnn0 6160 dffun7 6514 dffun8 6515 fnres 6614 opabiota 6911 fndmdif 6983 dff3 7041 frxp 8065 suppvalbr 8103 reldmtpos 8173 dmtpos 8177 aceq3lem 10031 axdc2lem 10359 axdclem2 10431 fpwwe2lem11 10553 nqerf 10842 shftdm 15022 bcthlem4 25282 dchrisumlem3 27442 eulerpath 30299 fundmpss 35937 elfix 36071 fnsingle 36087 fnimage 36097 funpartlem 36112 dfrecs2 36120 dfrdg4 36121 knoppcnlem9 36749 prtlem16 39303 undmrnresiss 44019 isoval2 49498 termolmd 50133 |
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