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| Description: The cross product of two sets is a set. Proposition 6.2 of [TakeutiZaring] p. 23. |
| Ref | Expression |
|---|---|
| xpex.1 |
|
| xpex.2 |
|
| Ref | Expression |
|---|---|
| xpex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpex.1 |
. 2
| |
| 2 | xpex.2 |
. 2
| |
| 3 | xpexg 3249 |
. 2
| |
| 4 | 1, 2, 3 | mp2an 695 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: oprabex 4004 oprabex3 4007 oprvalex 4026 elpm 4320 map0 4328 map1 4411 xpsnen 4415 endisj 4417 xpcomen 4419 xpassen 4421 xpdom2 4422 xpdom3 4425 xpen 4468 mapxpen 4475 xpmapenlem5 4480 rankxpl 4682 rankxplim 4684 rankxplim2 4685 rankxplim3 4686 rankxpsuc 4687 aceq3 4705 aceq5lem2 4708 aceq5lem3 4709 weth 4759 unxpdomlem 4815 unxpdom2 4817 sucxpdom 4818 uncdadom 4893 cdaassen 4902 xpcdaen 4903 mapcdaen 4904 cdadom1 4905 enqex 5020 nqex 5021 enrex 5150 srex 5151 axcnex 5239 addex 5289 mulex 5290 exp1t 6505 expp1t 6506 serz0 6991 serzcmp0 6993 climconst2 7032 climconst3 7033 climuz0 7045 climaddc1 7054 climmulc2 7065 climsubc2 7067 climcmpc1 7075 iserzcmp0 7079 ser1const 7107 acdc3lem 7428 acdclem 7436 xpnnen 7441 xpomen 7442 qnnen 7446 ruclem9 7461 infxpidmlem1 7495 infxpidmlem9 7503 infxpidmlem10 7504 infxpidmlem12 7506 infmap1 7516 iunctb 7517 infmap2lem2 7522 infmap2 7523 ismeti 7741 metxp 7774 lmclim 7898 metelcls 7900 bcthlem12 7944 bcthlem15 7947 bcthlem30 7962 isgrpi 7976 isgrp2i 8011 vcoprne 8136 sspval 8316 0ofval 8379 ajfval 8400 hvmulex 8802 hlim0 9026 hlimcau 9028 hlimuni 9030 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 959 ax-gen 960 ax-8 961 ax-10 963 ax-11 964 ax-12 965 ax-13 966 ax-14 967 ax-17 968 ax-4 970 ax-5o 972 ax-6o 975 ax-9o 1119 ax-10o 1136 ax-16 1206 ax-11o 1213 ax-ext 1452 ax-sep 2693 ax-pow 2732 ax-pr 2769 ax-un 2857 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 978 df-sb 1168 df-eu 1375 df-mo 1376 df-clab 1457 df-cleq 1462 df-clel 1465 df-ne 1579 df-v 1803 df-dif 2039 df-un 2040 df-in 2041 df-ss 2043 df-nul 2271 df-pw 2392 df-sn 2402 df-pr 2403 df-op 2406 df-uni 2494 df-opab 2657 df-xp 3174 df-rel 3175 |