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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 3303 |
. 2
|
| 3 | df-br 2616 |
. . 3
| |
| 4 | 3 | exbii 1050 |
. 2
|
| 5 | 2, 4 | bitr 173 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: eldm2g 3305 dmss 3306 opeldm 3310 dmun 3313 dmin 3314 dmuni 3315 reldm0 3327 dmrnssfld 3353 dmcosseq 3361 dmres 3376 iss 3393 relssdr 3509 dffun7 3536 funssres 3548 fn0 3601 dmfco 3768 tfrlem9 3914 1st2val 4088 tz9.12lem3 4644 cnlnssadj 9969 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 961 ax-gen 962 ax-8 963 ax-10 965 ax-12 967 ax-17 970 ax-4 972 ax-5o 974 ax-6o 977 ax-9o 1122 ax-10o 1139 ax-16 1209 ax-11o 1217 ax-ext 1458 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 980 df-sb 1171 df-clab 1463 df-cleq 1468 df-clel 1471 df-v 1809 df-un 2047 df-sn 2409 df-pr 2410 df-op 2413 df-br 2616 df-dm 3184 |