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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 5887 | . 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 1808 ∈ wcel 2142 Vcvv 3454 class class class wbr 5108 dom cdm 5660 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-ext 2734 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3416 df-v 3456 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-br 5109 df-dm 5670 |
| This theorem is used by: dmi 5910 dmep 5912 dmxp 5918 dmcoss 5964 dmcossOLD 5965 dmcosseq 5967 dmcosseqOLD 5968 dminss 6149 dmsnn0 6207 dffun7 6563 dffun8 6564 fnres 6662 opabiota 6963 fndmdif 7037 dff3 7095 frxp 8120 suppvalbr 8158 reldmtpos 8228 dmtpos 8232 aceq3lem 10111 axdc2lem 10438 axdclem2 10510 fpwwe2lem11 10632 nqerf 10921 shftdm 15115 bcthlem4 25497 dchrisumlem3 27666 eulerpath 30603 fundmpss 36267 elfix 36401 fnsingle 36417 fnimage 36427 funpartlem 36442 dfrecs2 36450 dfrdg4 36451 knoppcnlem9 37118 prtlem16 39671 undmrnresiss 44358 isoval2 49841 termolmd 50476 |
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