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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 4862 |
. 2
| |
| 2 | unexg 4564 |
. . 3
| |
| 3 | pwexg 4293 |
. . 3
| |
| 4 | pwexg 4293 |
. . 3
| |
| 5 | 2, 3, 4 | 3syl 17 |
. 2
|
| 6 | ssexg 4249 |
. 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 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2205 ax-14 2206 ax-ext 2214 ax-sep 4228 ax-pow 4287 ax-pr 4322 ax-un 4554 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-rex 2526 df-v 2815 df-un 3215 df-in 3217 df-ss 3224 df-pw 3671 df-sn 3695 df-pr 3696 df-op 3698 df-uni 3915 df-opab 4172 df-xp 4755 |
| This theorem is referenced by: xpexd 4865 xpex 4866 sqxpexg 4868 resiexg 5083 cnvexg 5300 coexg 5307 fex2 5531 fabexg 5554 resfunexgALT 6301 cofunexg 6302 fnexALT 6304 funexw 6305 opabex3d 6314 opabex3 6315 oprabexd 6320 ofmresex 6330 mpoexxg 6406 tposexg 6489 erex 6791 pmex 6887 mapex 6888 pmvalg 6893 elpmg 6898 fvdiagfn 6928 ixpexgg 6957 ixpsnf1o 6971 map1 7054 xpdom2 7082 xpdom3m 7085 xpen 7098 mapxpen 7101 xpfi 7192 djuex 7334 djuassen 7524 cc2lem 7580 shftfvalg 11503 climconst2 11976 prdsval 13486 prdsbaslemss 13487 pwsval 13504 pwsbas 13505 mulgnngsum 13844 releqgg 13937 eqgex 13938 eqgfval 13939 dvdsrvald 14238 dvdsrex 14243 aprval 14428 aprap 14432 psrval 14814 psrbasg 14829 psrplusgg 14833 lmfval 15058 txbasex 15122 txopn 15130 txcn 15140 txrest 15141 blfvalps 15250 xmetxp 15372 limccnp2lem 15541 limccnp2cntop 15542 dvfvalap 15546 |
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