| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 4889 |
. 2
| |
| 2 | unexg 4591 |
. . 3
| |
| 3 | pwexg 4319 |
. . 3
| |
| 4 | pwexg 4319 |
. . 3
| |
| 5 | 2, 3, 4 | 3syl 17 |
. 2
|
| 6 | ssexg 4274 |
. 2
| |
| 7 | 1, 5, 6 | sylancr 418 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on 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 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 |
| This proof 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 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-opab 4194 df-xp 4782 |
| This theorem is used by: xpexd 4892 xpex 4893 sqxpexg 4895 resiexg 5111 cnvexg 5328 coexg 5335 fex2 5559 fabexg 5582 resfunexgALT 6341 cofunexg 6342 fnexALT 6344 funexw 6345 opabex3d 6354 opabex3 6355 oprabexd 6364 ofmresex 6374 mpoexxg 6450 tposexg 6534 erex 6836 pmex 6932 mapex 6933 pmvalg 6938 elpmg 6943 fvdiagfn 6981 ixpexgg 7010 ixpsnf1o 7024 map1 7107 xpdom2 7135 xpdom3m 7138 xpen 7151 mapxpen 7154 xpfi 7245 djuex 7389 djuassen 7579 cc2lem 7638 shftfvalg 11604 climconst2 12081 mulgnngzsum 13988 releqgg 14081 eqgex 14082 eqgfval 14083 prdsval 14279 prdsbaslemss 14280 pwsval 14310 pwsbas 14311 dvdsrvald 14508 dvdsrex 14513 aprval 14699 aprap 14706 psrval 15160 psrbasg 15187 psrplusgg 15191 psrlidmfi 15208 lmfval 15436 txbasex 15500 txopn 15508 txcn 15518 txrest 15519 blfvalps 15628 xmetxp 15750 limccnp2lem 15919 limccnp2cntop 15920 dvfvalap 15924 |
| Copyright terms: Public domain | W3C validator |