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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 3254 |
. 2
| |
| 4 | 1, 2, 3 | mp2an 696 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: oprabex 4010 oprabex3 4013 oprvalex 4032 elpm 4326 map0 4334 map1 4417 xpsnen 4421 endisj 4423 xpcomen 4425 xpassen 4427 xpdom2 4428 xpdom3 4431 xpen 4474 mapxpen 4481 xpmapenlem5 4486 rankxpl 4690 rankxplim 4692 rankxplim2 4693 rankxplim3 4694 rankxpsuc 4695 aceq3 4713 aceq5lem2 4716 aceq5lem3 4717 weth 4767 unxpdomlem 4823 unxpdom2 4825 sucxpdom 4826 uncdadom 4901 cdaassen 4910 xpcdaen 4911 mapcdaen 4912 cdadom1 4913 enqex 5028 nqex 5029 enrex 5158 srex 5159 axcnex 5247 addex 5297 mulex 5298 exp1t 6513 expp1t 6514 serz0 6999 serzcmp0 7001 climconst2 7040 climconst3 7041 climuz0 7053 climaddc1 7062 climmulc2 7073 climsubc2 7075 climcmpc1 7083 iserzcmp0 7087 ser1const 7115 acdc3lem 7436 acdclem 7444 xpnnen 7449 xpomen 7450 qnnen 7454 ruclem9 7469 infxpidmlem1 7503 infxpidmlem9 7511 infxpidmlem10 7512 infxpidmlem12 7514 infmap1 7524 iunctb 7525 infmap2lem2 7530 infmap2 7531 ismeti 7752 metxp 7786 lmclim 7914 metelcls 7916 bcthlem12 7960 bcthlem15 7963 bcthlem30 7978 isgrpi 7992 isgrp2i 8026 vcoprne 8150 sspval 8329 0ofval 8392 ajfval 8413 hvmulex 8820 hlim0 9044 hlimcau 9046 hlimuni 9048 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 ax-pr 2774 ax-un 2861 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-opab 2662 df-xp 3179 df-rel 3180 |