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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 2145 Vcvv 3453 class class class wbr 5107 dom cdm 5659 |
| 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 2147 ax-9 2155 ax-ext 2734 |
| 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 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-br 5108 df-dm 5669 |
| This theorem is used by: dmi 5909 dmep 5911 dmxp 5917 dmcoss 5963 dmcossOLD 5964 dmcosseq 5966 dmcosseqOLD 5967 dminss 6148 dmsnn0 6207 dffun7 6564 dffun8 6565 fnres 6663 opabiota 6964 fndmdif 7038 dff3 7096 frxp 8127 suppvalbr 8165 reldmtpos 8235 dmtpos 8239 aceq3lem 10126 axdc2lem 10453 axdclem2 10525 fpwwe2lem11 10653 nqerf 10942 shftdm 15146 bcthlem4 25556 dchrisumlem3 27725 eulerpath 30707 fundmpss 36333 elfix 36467 fnsingle 36483 fnimage 36493 funpartlem 36508 dfrecs2 36516 dfrdg4 36517 knoppcnlem9 37185 prtlem16 39729 undmrnresiss 44431 isoval2 49948 termolmd 50583 |
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