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Related theorems Unicode version |
| Description: Membership in a cross product. This version requires no quantifiers or dummy variables. See also elxp5 3460, elxp6 4108, and elxp7 4109. |
| Ref | Expression |
|---|---|
| elxp4 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elxp 3208 |
. 2
| |
| 2 | sneq 2421 |
. . . . . . . . . . . 12
| |
| 3 | 2 | rneqd 3347 |
. . . . . . . . . . 11
|
| 4 | 3 | unieqd 2516 |
. . . . . . . . . 10
|
| 5 | visset 1816 |
. . . . . . . . . . 11
| |
| 6 | visset 1816 |
. . . . . . . . . . 11
| |
| 7 | 5, 6 | op2nda 3458 |
. . . . . . . . . 10
|
| 8 | 4, 7 | syl6req 1527 |
. . . . . . . . 9
|
| 9 | 8 | pm4.71ri 640 |
. . . . . . . 8
|
| 10 | 9 | anbi1i 483 |
. . . . . . 7
|
| 11 | anass 441 |
. . . . . . 7
| |
| 12 | 10, 11 | bitr 173 |
. . . . . 6
|
| 13 | 12 | exbii 1053 |
. . . . 5
|
| 14 | snex 2756 |
. . . . . . . 8
| |
| 15 | 14 | rnex 3367 |
. . . . . . 7
|
| 16 | 15 | uniex 2876 |
. . . . . 6
|
| 17 | opeq2 2492 |
. . . . . . . 8
| |
| 18 | 17 | eqeq2d 1489 |
. . . . . . 7
|
| 19 | eleq1 1537 |
. . . . . . . 8
| |
| 20 | 19 | anbi2d 618 |
. . . . . . 7
|
| 21 | 18, 20 | anbi12d 630 |
. . . . . 6
|
| 22 | 16, 21 | ceqsexv 1838 |
. . . . 5
|
| 23 | 13, 22 | bitr 173 |
. . . 4
|
| 24 | sneq 2421 |
. . . . . . . . 9
| |
| 25 | 24 | dmeqd 3319 |
. . . . . . . 8
|
| 26 | 25 | unieqd 2516 |
. . . . . . 7
|
| 27 | 5 | op1sta 3454 |
. . . . . . 7
|
| 28 | 26, 27 | syl6req 1527 |
. . . . . 6
|
| 29 | 28 | pm4.71ri 640 |
. . . . 5
|
| 30 | 29 | anbi1i 483 |
. . . 4
|
| 31 | anass 441 |
. . . 4
| |
| 32 | 23, 30, 31 | 3bitr 177 |
. . 3
|
| 33 | 32 | exbii 1053 |
. 2
|
| 34 | 14 | dmex 3366 |
. . . 4
|
| 35 | 34 | uniex 2876 |
. . 3
|
| 36 | opeq1 2491 |
. . . . 5
| |
| 37 | 36 | eqeq2d 1489 |
. . . 4
|
| 38 | eleq1 1537 |
. . . . 5
| |
| 39 | 38 | anbi1d 619 |
. . . 4
|
| 40 | 37, 39 | anbi12d 630 |
. . 3
|
| 41 | 35, 40 | ceqsexv 1838 |
. 2
|
| 42 | 1, 33, 41 | 3bitr 177 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: elxp6 4108 xpdom2 4448 xpmapenlem3 4504 xpmapenlem5 4506 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-nul 2715 ax-pow 2748 ax-pr 2785 ax-un 2872 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-v 1815 df-dif 2052 df-un 2053 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 df-pr 2417 df-op 2420 df-uni 2508 df-br 2625 df-opab 2672 df-xp 3190 df-rel 3191 df-cnv 3192 df-dm 3194 df-rn 3195 |