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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 7753 | . 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 3453 × cxp 5657 |
| 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 2734 ax-sep 5255 ax-pow 5334 ax-pr 5402 ax-un 7740 |
| 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 2741 df-cleq 2754 df-clel 2837 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-opab 5172 df-xp 5665 df-rel 5666 |
| This theorem is used by: cnvexg 7925 fabexd 7938 cofunexg 7950 oprabexd 7976 ofmresex 7986 opabex2 8058 offval22 8089 sexp2 8148 sexp3 8155 tposexg 8242 mapunen 9148 marypha1 9408 wdom2d 9556 ixpiunwdom 9566 ttrclexg 9706 fnct 10548 fnctOLD 10549 fpwwe2lem2 10645 fpwwe2lem4 10647 fpwwe2lem11 10654 fpwwelem 10658 canthwe 10664 pwxpndom 10679 gchhar 10692 trclexlem 15071 isacs1i 17751 brcic 17893 rescval2 17923 reschom 17925 rescabs 17928 setccofval 18177 estrccofval 18223 sylow2a 19752 gsumxp 20109 gsumxp2 20113 opsrval 22268 opsrtoslem2 22278 evlslem4 22298 evlsevl 22354 matbas2d 22651 tsmsxp 24387 ustssel 24438 ustfilxp 24445 trust 24461 restutop 24469 trcfilu 24525 cfiluweak 24526 imasdsf1olem 24605 metustfbas 24789 restmetu 24802 rrxsca 25630 madeval 28105 perpln1 29072 perpln2 29073 isperp 29074 suppovss 33161 fsuppcurry1 33203 fsuppcurry2 33204 hashxpe 33286 gsumpart 33511 gsumwrd2dccat 33526 elrgspnlem2 33691 elrgspnsubrunlem2 33696 erlval 33706 rlocval 33707 rlocbas 33716 rlocaddval 33717 rlocmulval 33718 fedgmullem1 34147 fedgmullem2 34148 fedgmul 34149 metidval 34408 esumiun 34612 filnetlem3 37007 numiunnum 37097 bj-imdirvallem 37940 bj-imdirval2 37943 bj-imdirco 37950 bj-iminvval2 37954 isrngod 38656 isgrpda 38713 iscringd 38756 aks6d1c6lem2 43045 wdom2d2 43884 unxpwdom3 43944 trclubgNEW 44466 relexpxpmin 44565 rfovd 44849 rfovcnvf1od 44852 fsovrfovd 44857 dvsinax 46749 sge0xp 47265 hoicvr 47384 gpgvtx 48967 gpgiedg 48968 imasubclem1 50038 fucofvalg 50252 |
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