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 4468 | . 2 | |
2 | unexg 4196 | . . 3 | |
3 | pwexg 3954 | . . 3 | |
4 | pwexg 3954 | . . 3 | |
5 | 2, 3, 4 | 3syl 17 | . 2 |
6 | ssexg 3917 | . 2 | |
7 | 1, 5, 6 | sylancr 405 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 102 wcel 1433 cvv 2601 cun 2971 wss 2973 cpw 3382 cxp 4361 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-rex 2354 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-opab 3840 df-xp 4369 |
This theorem is referenced by: xpex 4471 resiexg 4673 cnvexg 4875 coexg 4882 fex2 5079 fabexg 5097 resfunexgALT 5757 cofunexg 5758 fnexALT 5760 opabex3d 5768 opabex3 5769 oprabexd 5774 ofmresex 5784 mpt2exxg 5853 tposexg 5896 erex 6153 xpdom2 6328 xpdom3m 6331 shftfvalg 9706 climconst2 10130 |
Copyright terms: Public domain | W3C validator |