| Metamath Proof Explorer |
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Related theorems Unicode version |
| Description: A cross product is included in the power of the power of the union of its arguments. |
| Ref | Expression |
|---|---|
| xpsspw |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relxp 3255 |
. 2
| |
| 2 | visset 1813 |
. . . 4
| |
| 3 | 2 | opelxp 3214 |
. . 3
|
| 4 | snssi 2466 |
. . . . . . . 8
| |
| 5 | ssun3 2195 |
. . . . . . . 8
| |
| 6 | 4, 5 | syl 10 |
. . . . . . 7
|
| 7 | snex 2750 |
. . . . . . . 8
| |
| 8 | 7 | elpw 2404 |
. . . . . . 7
|
| 9 | 6, 8 | sylibr 200 |
. . . . . 6
|
| 10 | 9 | adantr 389 |
. . . . 5
|
| 11 | snssi 2466 |
. . . . . . . . . 10
| |
| 12 | ssun4 2196 |
. . . . . . . . . 10
| |
| 13 | 11, 12 | syl 10 |
. . . . . . . . 9
|
| 14 | 6, 13 | anim12i 333 |
. . . . . . . 8
|
| 15 | unss 2204 |
. . . . . . . 8
| |
| 16 | 14, 15 | sylib 198 |
. . . . . . 7
|
| 17 | df-pr 2413 |
. . . . . . 7
| |
| 18 | 16, 17 | syl5ss 2105 |
. . . . . 6
|
| 19 | zfpair2 2780 |
. . . . . . 7
| |
| 20 | 19 | elpw 2404 |
. . . . . 6
|
| 21 | 18, 20 | sylibr 200 |
. . . . 5
|
| 22 | 10, 21 | jca 288 |
. . . 4
|
| 23 | prex 2781 |
. . . . . 6
| |
| 24 | 23 | elpw 2404 |
. . . . 5
|
| 25 | df-op 2416 |
. . . . . 6
| |
| 26 | 25 | eleq1i 1537 |
. . . . 5
|
| 27 | 7, 19 | prss 2471 |
. . . . 5
|
| 28 | 24, 26, 27 | 3bitr4r 184 |
. . . 4
|
| 29 | 22, 28 | sylib 198 |
. . 3
|
| 30 | 3, 29 | sylbi 199 |
. 2
|
| 31 | 1, 30 | relssi 3248 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: unixpss 3258 xpexg 3259 rankxpu 4711 |
| 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 df-rel 3185 |