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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 5879 | . 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 1811 ∈ wcel 2144 Vcvv 3450 class class class wbr 5102 dom cdm 5650 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-un 4151 df-nul 4279 df-if 4482 df-sn 4584 df-pr 4586 df-op 4590 df-br 5103 df-dm 5660 |
| This theorem is used by: dmi 5902 dmep 5904 dmxp 5910 dmcoss 5956 dmcossOLD 5957 dmcosseq 5959 dmcosseqOLD 5960 dminss 6142 dmsnn0 6208 dffun7 6567 dffun8 6568 fnres 6666 opabiota 6967 fndmdif 7041 dff3 7100 frxp 8138 suppvalbr 8181 reldmtpos 8251 dmtpos 8255 aceq3lem 10199 axdc2lem 10526 axdclem2 10598 fpwwe2lem11 10726 nqerf 11015 shftdm 15224 bcthlem4 25648 dchrisumlem3 27818 eulerpath 30842 fundmpss 36532 elfix 36665 fnsingle 36681 fnimage 36691 funpartlem 36706 dfrecs2 36714 dfrdg4 36715 knoppcnlem9 37367 prtlem16 39927 undmrnresiss 44604 isoval2 50143 termolmd 50778 |
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