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| Mirrors > Home > MPE Home > Th. List > xpexd | Structured version Visualization version GIF version | ||
| Description: The Cartesian product of two sets is a set. (Contributed by Glauco Siliprandi, 26-Jun-2021.) |
| Ref | Expression |
|---|---|
| xpexd.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| xpexd.2 | ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
| Ref | Expression |
|---|---|
| xpexd | ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpexd.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 2 | xpexd.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ 𝑊) | |
| 3 | xpexg 7764 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
| 4 | 1, 2, 3 | syl2anc 596 | 1 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2144 Vcvv 3450 × cxp 5648 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 ax-un 7751 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-opab 5167 df-xp 5656 df-rel 5657 |
| This theorem is used by: cnvexg 7936 fabexd 7949 cofunexg 7961 oprabexd 7987 ofmresex 7997 opabex2 8068 offval22 8099 sexp2 8165 sexp3 8172 tposexg 8260 mapunen 9168 marypha1 9429 wdom2d 9577 ixpiunwdom 9587 ttrclexg 9727 fnct 10623 fnctOLD 10624 fpwwe2lem2 10720 fpwwe2lem4 10722 fpwwe2lem11 10729 fpwwelem 10733 canthwe 10739 pwxpndom 10754 gchhar 10767 trclexlem 15152 isacs1i 17836 brcic 17978 rescval2 18008 reschom 18010 rescabs 18013 setccofval 18262 estrccofval 18308 sylow2a 19838 gsumxp 20195 gsumxp2 20199 opsrval 22360 opsrtoslem2 22370 evlslem4 22390 evlsevl 22446 matbas2d 22743 tsmsxp 24479 ustssel 24530 ustfilxp 24537 trust 24553 restutop 24561 trcfilu 24617 cfiluweak 24618 imasdsf1olem 24697 metustfbas 24881 restmetu 24894 rrxsca 25722 madeval 28223 perpln1 29190 perpln2 29191 isperp 29192 suppovss 33321 fsuppcurry1 33362 fsuppcurry2 33363 hashxpe 33445 gsumpart 33670 gsumwrd2dccat 33685 elrgspnlem2 33850 elrgspnsubrunlem2 33855 erlval 33865 rlocval 33866 rlocbas 33875 rlocaddval 33876 rlocmulval 33877 fedgmullem1 34307 fedgmullem2 34308 fedgmul 34309 metidval 34568 esumiun 34772 weexenwe 35812 j0ltalephlem 35946 filnetlem3 37260 numiunnum 37350 bj-imdirvallem 38194 bj-imdirval2 38197 bj-imdirco 38204 bj-iminvval2 38208 isrngod 38925 isgrpda 38982 iscringd 39025 aks6d1c6lem2 43314 wdom2d2 44135 unxpwdom3 44190 trclubgNEW 44711 relexpxpmin 44810 rfovd 45094 rfovcnvf1od 45097 fsovrfovd 45102 dvsinax 47016 sge0xp 47532 hoicvr 47651 gpgvtx 49234 gpgiedg 49235 imasubclem1 50313 fucofvalg 50533 |
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