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| Description: Ordered pair membership in a cross product. |
| Ref | Expression |
|---|---|
| opelxp.1 |
|
| Ref | Expression |
|---|---|
| opelxp |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | opelxp1 3205 |
. 2
| |
| 2 | pm3.26 319 |
. 2
| |
| 3 | opeq1 2487 |
. . . 4
| |
| 4 | 3 | eleq1d 1540 |
. . 3
|
| 5 | eleq1 1534 |
. . . 4
| |
| 6 | 5 | anbi1d 617 |
. . 3
|
| 7 | eqcom 1477 |
. . . . . . . . . . 11
| |
| 8 | visset 1813 |
. . . . . . . . . . . 12
| |
| 9 | visset 1813 |
. . . . . . . . . . . 12
| |
| 10 | opelxp.1 |
. . . . . . . . . . . 12
| |
| 11 | 8, 9, 10 | opth 2787 |
. . . . . . . . . . 11
|
| 12 | 7, 11 | bitr 173 |
. . . . . . . . . 10
|
| 13 | 12 | anbi1i 481 |
. . . . . . . . 9
|
| 14 | an4 506 |
. . . . . . . . 9
| |
| 15 | 13, 14 | bitr 173 |
. . . . . . . 8
|
| 16 | 15 | exbii 1051 |
. . . . . . 7
|
| 17 | 19.42v 1308 |
. . . . . . 7
| |
| 18 | 16, 17 | bitr 173 |
. . . . . 6
|
| 19 | 18 | exbii 1051 |
. . . . 5
|
| 20 | 19.41v 1305 |
. . . . 5
| |
| 21 | 19, 20 | bitr 173 |
. . . 4
|
| 22 | elxp 3202 |
. . . 4
| |
| 23 | df-clel 1472 |
. . . . 5
| |
| 24 | df-clel 1472 |
. . . . 5
| |
| 25 | 23, 24 | anbi12i 482 |
. . . 4
|
| 26 | 21, 22, 25 | 3bitr4 183 |
. . 3
|
| 27 | 4, 6, 26 | vtoclbg 1848 |
. 2
|
| 28 | 1, 2, 27 | pm5.21nii 679 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: brxp 3215 opelxpg 3216 ralxp 3218 opthprc 3221 elxp3 3224 optocl 3235 relsn 3254 ssxp 3256 xpsspw 3257 inxp 3269 opelres 3372 resiexg 3396 dfima2 3405 cnvxp 3464 xpnz 3466 ssrnres 3481 relssdr 3513 opelf 3640 dff2 3817 dff3 3818 resoprab 4009 oprssdm 4042 curry1 4098 df1st2 4126 df2nd2 4127 brecop 4306 brecop2 4307 ecopoprdm 4309 eceqopreq 4313 xpdom2 4442 xpmapenlem4 4499 xpmapenlem5 4500 mapunen 4502 aceq5lem2 4736 ltpiord 5015 opelcn 5248 opelreal 5249 ruclem13 7522 infxpidmlem5 7556 infxpidmlem7 7558 xplmi 7973 bcthlem32 8030 nvvop 8228 stcat 10457 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-opab 2667 df-xp 3184 |