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| Mirrors > Home > ILE Home > Th. List > xpexg | Unicode version | ||
| Description: The cross product of two sets is a set. Proposition 6.2 of [TakeutiZaring] p. 23. (Contributed by NM, 14-Aug-1994.) |
| Ref | Expression |
|---|---|
| xpexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpsspw 4836 |
. 2
| |
| 2 | unexg 4538 |
. . 3
| |
| 3 | pwexg 4268 |
. . 3
| |
| 4 | pwexg 4268 |
. . 3
| |
| 5 | 2, 3, 4 | 3syl 17 |
. 2
|
| 6 | ssexg 4226 |
. 2
| |
| 7 | 1, 5, 6 | sylancr 414 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-rex 2514 df-v 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-opab 4149 df-xp 4729 |
| This theorem is referenced by: xpexd 4839 xpex 4840 sqxpexg 4841 resiexg 5056 cnvexg 5272 coexg 5279 fex2 5500 fabexg 5521 resfunexgALT 6265 cofunexg 6266 fnexALT 6268 funexw 6269 opabex3d 6278 opabex3 6279 oprabexd 6284 ofmresex 6294 mpoexxg 6370 tposexg 6419 erex 6721 pmex 6817 mapex 6818 pmvalg 6823 elpmg 6828 fvdiagfn 6857 ixpexgg 6886 ixpsnf1o 6900 map1 6982 xpdom2 7010 xpdom3m 7013 xpen 7026 mapxpen 7029 xpfi 7117 djuex 7233 djuassen 7422 cc2lem 7475 shftfvalg 11369 climconst2 11842 prdsval 13346 prdsbaslemss 13347 pwsval 13364 pwsbas 13365 mulgnngsum 13704 releqgg 13797 eqgex 13798 eqgfval 13799 dvdsrvald 14097 dvdsrex 14102 aprval 14286 aprap 14290 psrval 14670 psrbasg 14678 psrplusgg 14682 lmfval 14907 txbasex 14971 txopn 14979 txcn 14989 txrest 14990 blfvalps 15099 xmetxp 15221 limccnp2lem 15390 limccnp2cntop 15391 dvfvalap 15395 |
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