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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 5886 | . 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 |
| This proof depends on syntax axioms: ↔ wb 209 ∃wex 1812 ∈ wcel 2147 Vcvv 3454 class class class wbr 5106 dom cdm 5655 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-br 5107 df-dm 5665 |
| This theorem is used by: dmi 5909 dmep 5911 dmxp 5917 dmcoss 5963 dmcossOLD 5964 dmcosseq 5966 dmcosseqOLD 5967 dminss 6154 dmsnn0 6220 idresdmsscocnv1 6274 dffun7 6584 dffun8 6585 fnres 6685 opabiota 6987 fndmdif 7061 dff3 7121 frxp 8162 suppvalbr 8205 suppvalbrOLD 8206 reldmtpos 8276 dmtpos 8280 aceq3lem 10223 axdc2lem 10550 axdclem2 10622 fpwwe2lem11 10750 nqerf 11039 shftdm 15250 bcthlem4 25675 dchrisumlem3 27845 eulerpath 30869 fundmpss 36709 elfix 36842 fnsingle 36858 fnimage 36868 funpartlem 36883 dfrecs2 36891 dfrdg4 36892 knoppcnlem9 37544 prtlem16 40117 undmrnresiss 44794 isoval2 50352 termolmd 51056 |
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