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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 7749 | . 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 2145 Vcvv 3450 × cxp 5653 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2732 ax-sep 5251 ax-pow 5330 ax-pr 5398 ax-un 7736 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-opab 5168 df-xp 5661 df-rel 5662 |
| This theorem is used by: cnvexg 7921 fabexd 7934 cofunexg 7946 oprabexd 7972 ofmresex 7982 opabex2 8054 offval22 8085 sexp2 8144 sexp3 8151 tposexg 8238 mapunen 9144 marypha1 9404 wdom2d 9552 ixpiunwdom 9562 ttrclexg 9702 fnct 10544 fnctOLD 10545 fpwwe2lem2 10641 fpwwe2lem4 10643 fpwwe2lem11 10650 fpwwelem 10654 canthwe 10660 pwxpndom 10675 gchhar 10688 trclexlem 15067 isacs1i 17745 brcic 17887 rescval2 17917 reschom 17919 rescabs 17922 setccofval 18171 estrccofval 18217 sylow2a 19746 gsumxp 20103 gsumxp2 20107 opsrval 22262 opsrtoslem2 22272 evlslem4 22292 evlsevl 22348 matbas2d 22645 tsmsxp 24381 ustssel 24432 ustfilxp 24439 trust 24455 restutop 24463 trcfilu 24519 cfiluweak 24520 imasdsf1olem 24599 metustfbas 24783 restmetu 24796 rrxsca 25624 madeval 28097 perpln1 29064 perpln2 29065 isperp 29066 suppovss 33153 fsuppcurry1 33195 fsuppcurry2 33196 hashxpe 33278 gsumpart 33503 gsumwrd2dccat 33518 elrgspnlem2 33683 elrgspnsubrunlem2 33688 erlval 33698 rlocval 33699 rlocbas 33708 rlocaddval 33709 rlocmulval 33710 fedgmullem1 34139 fedgmullem2 34140 fedgmul 34141 metidval 34400 esumiun 34604 filnetlem3 36999 numiunnum 37089 bj-imdirvallem 37932 bj-imdirval2 37935 bj-imdirco 37942 bj-iminvval2 37946 isrngod 38648 isgrpda 38705 iscringd 38748 aks6d1c6lem2 43037 wdom2d2 43876 unxpwdom3 43936 trclubgNEW 44458 relexpxpmin 44557 rfovd 44841 rfovcnvf1od 44844 fsovrfovd 44849 dvsinax 46741 sge0xp 47257 hoicvr 47376 gpgvtx 48959 gpgiedg 48960 imasubclem1 50030 fucofvalg 50244 |
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