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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 4882 |
. 2
| |
| 2 | unexg 4584 |
. . 3
| |
| 3 | pwexg 4312 |
. . 3
| |
| 4 | pwexg 4312 |
. . 3
| |
| 5 | 2, 3, 4 | 3syl 17 |
. 2
|
| 6 | ssexg 4267 |
. 2
| |
| 7 | 1, 5, 6 | sylancr 418 |
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 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 |
| This theorem depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-opab 4188 df-xp 4775 |
| This theorem is referenced by: xpexd 4885 xpex 4886 sqxpexg 4888 resiexg 5103 cnvexg 5320 coexg 5327 fex2 5551 fabexg 5574 resfunexgALT 6327 cofunexg 6328 fnexALT 6330 funexw 6331 opabex3d 6340 opabex3 6341 oprabexd 6350 ofmresex 6360 mpoexxg 6436 tposexg 6519 erex 6821 pmex 6917 mapex 6918 pmvalg 6923 elpmg 6928 fvdiagfn 6965 ixpexgg 6994 ixpsnf1o 7008 map1 7091 xpdom2 7119 xpdom3m 7122 xpen 7135 mapxpen 7138 xpfi 7229 djuex 7373 djuassen 7563 cc2lem 7622 shftfvalg 11561 climconst2 12035 mulgnngzsum 13907 releqgg 14000 eqgex 14001 eqgfval 14002 prdsval 14150 prdsbaslemss 14151 pwsval 14181 pwsbas 14182 dvdsrvald 14373 dvdsrex 14378 aprval 14564 aprap 14571 psrval 14973 psrbasg 14988 psrplusgg 14992 lmfval 15217 txbasex 15281 txopn 15289 txcn 15299 txrest 15300 blfvalps 15409 xmetxp 15531 limccnp2lem 15700 limccnp2cntop 15701 dvfvalap 15705 |
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