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| Description: Membership in a domain. Theorem 4 of [Suppes] p. 59. |
| Ref | Expression |
|---|---|
| eldm.1 |
|
| Ref | Expression |
|---|---|
| eldm2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eldm.1 |
. . 3
| |
| 2 | 1 | eldm 2527 |
. 2
|
| 3 | df-br 2063 |
. . 3
| |
| 4 | 3 | biex 733 |
. 2
|
| 5 | 2, 4 | bitr 151 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eldmg 2529 dmss 2530 opeldm 2534 dmun 2536 dmin 2537 dmuni 2538 reldm0 2550 dmcosseq 2572 dmres 2584 iss 2599 relssdr 2668 dmco2 2673 dffun7 2688 funssres 2698 fn0 2739 dmfco 2864 tfrlem8 2956 tfrlem9 2957 1st2val 3097 tz9.12lem3 3505 |
| This theorem was proved from axioms: ax-1 3 ax-2 4 ax-3 5 ax-mp 6 ax-4 673 ax-5 674 ax-6 675 ax-7 676 ax-gen 677 ax-8 798 ax-9 799 ax-10 800 ax-11 801 ax-12 802 ax-16 922 ax-17 925 ax-ext 1074 |
| This theorem depends on definitions: df-bi 128 df-or 197 df-an 198 df-ex 679 df-sb 853 df-clab 1093 df-cleq 1097 df-clel 1099 df-v 1349 df-un 1490 df-sn 1811 df-pr 1812 df-op 1815 df-br 2063 df-dm 2428 |