| Metamath Proof Explorer |
< Previous
Next >
Related theorems Unicode version |
| 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 3259 |
. 2
| |
| 4 | 1, 2, 3 | mp2an 697 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: oprabex 4019 oprabex3 4022 oprvalex 4041 elpm 4336 map0 4344 map1 4430 xpsnen 4435 endisj 4437 xpcomen 4439 xpassen 4441 xpdom2 4442 xpdom3 4445 xpen 4488 mapxpen 4495 xpmapenlem5 4500 rankxpl 4710 rankxplim 4712 rankxplim2 4713 rankxplim3 4714 rankxpsuc 4715 aceq3 4733 aceq5lem2 4736 aceq5lem3 4737 weth 4787 unxpdomlem 4843 unxpdom2 4845 sucxpdom 4846 uncdadom 4921 cdaassen 4930 xpcdaen 4931 mapcdaen 4932 cdadom1 4933 enqex 5048 nqex 5049 enrex 5178 srex 5179 axcnex 5267 addex 5317 mulex 5318 exp1t 6573 expp1t 6574 serz0 7053 serzcmp0 7055 climconst2 7095 climconst3 7096 climuz0 7108 climaddc1 7118 climmulc2 7129 climsubc2 7131 climcmpc1 7139 iserzcmp0 7143 ser1const 7171 acdc3lem 7486 acdclem 7494 xpnnen 7499 xpomen 7500 qnnen 7503 ruclem9 7518 infxpidmlem1 7552 infxpidmlem9 7560 infxpidmlem10 7561 infxpidmlem12 7563 infmap1 7573 iunctb 7575 infmap2lem2 7580 infmap2 7581 ismeti 7802 metxp 7834 lmclim 7963 metelcls 7965 bcthlem12 8010 bcthlem15 8013 bcthlem30 8028 isgrpi 8042 isgrp2i 8076 vcoprne 8198 sspval 8382 0ofval 8447 ajfval 8469 hvmulex 8881 hlim0 9105 hlimcau 9107 hlimuni 9109 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-sep 2703 ax-pow 2742 ax-pr 2779 ax-un 2866 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-opab 2667 df-xp 3184 df-rel 3185 |