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| Description: Membership in universal class of ordered pairs. |
| Ref | Expression |
|---|---|
| elvv |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elxp 4018 |
. 2
| |
| 2 | visset 2295 |
. . . . 5
| |
| 3 | visset 2295 |
. . . . 5
| |
| 4 | 2, 3 | pm3.2i 307 |
. . . 4
|
| 5 | 4 | biantru 793 |
. . 3
|
| 6 | 5 | 2exbii 1399 |
. 2
|
| 7 | 1, 6 | bitr4i 193 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: elvvv 4054 elvvuni 4055 xpss 4056 onxpdisjOLD 4069 ssrel 4075 ssrelOLD 4076 elrel 4086 relop 4113 elreldm 4185 dmsnn0 4362 1stval2 5030 2ndval2 5031 1st2val 5038 2nd2val 5039 dfopab2 5053 dfoprab3 5054 fundmen 5487 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1304 ax-gen 1305 ax-8 1306 ax-9 1307 ax-10 1308 ax-11 1309 ax-12 1310 ax-14 1312 ax-17 1317 ax-4 1319 ax-5o 1321 ax-6o 1324 ax-9o 1481 ax-10o 1500 ax-16 1580 ax-11o 1588 ax-ext 1865 ax-sep 3438 ax-nul 3445 ax-pow 3481 ax-pr 3524 |
| This theorem depends on definitions: df-bi 164 df-or 241 df-an 242 df-ex 1327 df-sb 1536 df-clab 1872 df-cleq 1877 df-clel 1880 df-ne 2019 df-v 2294 df-dif 2597 df-un 2600 df-in 2603 df-ss 2605 df-nul 2876 df-pw 3035 df-sn 3049 df-pr 3050 df-op 3053 df-opab 3396 df-xp 4000 |