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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 5877 | . 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 3450 class class class wbr 5103 dom cdm 5648 |
| 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 2732 |
| 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 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-br 5104 df-dm 5658 |
| This theorem is used by: dmi 5900 dmep 5902 dmxp 5908 dmcoss 5954 dmcossOLD 5955 dmcosseq 5957 dmcosseqOLD 5958 dminss 6139 dmsnn0 6198 dffun7 6556 dffun8 6557 fnres 6655 opabiota 6956 fndmdif 7030 dff3 7089 frxp 8122 suppvalbr 8160 reldmtpos 8230 dmtpos 8234 aceq3lem 10156 axdc2lem 10483 axdclem2 10555 fpwwe2lem11 10683 nqerf 10972 shftdm 15177 bcthlem4 25595 dchrisumlem3 27767 eulerpath 30761 fundmpss 36447 elfix 36581 fnsingle 36597 fnimage 36607 funpartlem 36622 dfrecs2 36630 dfrdg4 36631 knoppcnlem9 37283 prtlem16 39840 undmrnresiss 44542 isoval2 50059 termolmd 50694 |
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