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| Description: Membership in a cross product requiring no quantifiers or dummy variables. Provides a slightly shorter version of elxp4 3445 when the double intersection does not create class existence problems (caused by int0 2542). |
| Ref | Expression |
|---|---|
| elxp5 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elxp 3197 |
. 2
| |
| 2 | sneq 2413 |
. . . . . . . . . . . 12
| |
| 3 | 2 | rneqd 3336 |
. . . . . . . . . . 11
|
| 4 | 3 | unieqd 2507 |
. . . . . . . . . 10
|
| 5 | visset 1809 |
. . . . . . . . . . 11
| |
| 6 | visset 1809 |
. . . . . . . . . . 11
| |
| 7 | 5, 6 | op2nda 3444 |
. . . . . . . . . 10
|
| 8 | 4, 7 | syl6req 1521 |
. . . . . . . . 9
|
| 9 | 8 | pm4.71ri 637 |
. . . . . . . 8
|
| 10 | 9 | anbi1i 481 |
. . . . . . 7
|
| 11 | anass 439 |
. . . . . . 7
| |
| 12 | 10, 11 | bitr 173 |
. . . . . 6
|
| 13 | 12 | exbii 1049 |
. . . . 5
|
| 14 | snex 2745 |
. . . . . . . 8
| |
| 15 | rnexg 3353 |
. . . . . . . 8
| |
| 16 | 14, 15 | ax-mp 7 |
. . . . . . 7
|
| 17 | 16 | uniex 2865 |
. . . . . 6
|
| 18 | opeq2 2484 |
. . . . . . . 8
| |
| 19 | 18 | eqeq2d 1483 |
. . . . . . 7
|
| 20 | eleq1 1531 |
. . . . . . . 8
| |
| 21 | 20 | anbi2d 615 |
. . . . . . 7
|
| 22 | 19, 21 | anbi12d 627 |
. . . . . 6
|
| 23 | 17, 22 | ceqsexv 1831 |
. . . . 5
|
| 24 | 13, 23 | bitr 173 |
. . . 4
|
| 25 | inteq 2531 |
. . . . . . . 8
| |
| 26 | 25 | inteqd 2533 |
. . . . . . 7
|
| 27 | 5 | op1stb 2908 |
. . . . . . 7
|
| 28 | 26, 27 | syl6req 1521 |
. . . . . 6
|
| 29 | 28 | pm4.71ri 637 |
. . . . 5
|
| 30 | 29 | anbi1i 481 |
. . . 4
|
| 31 | anass 439 |
. . . 4
| |
| 32 | 24, 30, 31 | 3bitr 177 |
. . 3
|
| 33 | 32 | exbii 1049 |
. 2
|
| 34 | eleq1 1531 |
. . . . . 6
| |
| 35 | 5, 34 | mpbii 193 |
. . . . 5
|
| 36 | 35 | adantr 389 |
. . . 4
|
| 37 | 36 | 19.23aiv 1293 |
. . 3
|
| 38 | elisset 1813 |
. . . 4
| |
| 39 | 38 | ad2antrl 406 |
. . 3
|
| 40 | opeq1 2483 |
. . . . . 6
| |
| 41 | 40 | eqeq2d 1483 |
. . . . 5
|
| 42 | eleq1 1531 |
. . . . . 6
| |
| 43 | 42 | anbi1d 616 |
. . . . 5
|
| 44 | 41, 43 | anbi12d 627 |
. . . 4
|
| 45 | 44 | ceqsexgv 1884 |
. . 3
|
| 46 | 37, 39, 45 | pm5.21nii 678 |
. 2
|
| 47 | 1, 33, 46 | 3bitr 177 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: mapunen 4488 xpnnen 7449 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-nul 2705 ax-pow 2737 ax-pr 2774 ax-un 2861 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-ral 1646 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-int 2529 df-br 2615 df-opab 2662 df-xp 3179 df-rel 3180 df-cnv 3181 df-dm 3183 df-rn 3184 |