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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 7758 | . 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 2146 Vcvv 3458 × cxp 5664 |
| 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 2148 ax-9 2156 ax-ext 2738 ax-sep 5262 ax-pow 5341 ax-pr 5409 ax-un 7745 |
| 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 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-opab 5179 df-xp 5672 df-rel 5673 |
| This theorem is used by: cnvexg 7930 fabexd 7943 cofunexg 7955 oprabexd 7981 ofmresex 7991 opabex2 8063 offval22 8092 sexp2 8151 sexp3 8158 tposexg 8245 mapunen 9144 marypha1 9404 wdom2d 9552 ixpiunwdom 9562 ttrclexg 9702 fnct 10539 fpwwe2lem2 10635 fpwwe2lem4 10637 fpwwe2lem11 10644 fpwwelem 10648 canthwe 10654 pwxpndom 10669 gchhar 10682 trclexlem 15057 isacs1i 17738 brcic 17880 rescval2 17910 reschom 17912 rescabs 17915 setccofval 18164 estrccofval 18210 sylow2a 19720 gsumxp 20077 gsumxp2 20081 opsrval 22234 opsrtoslem2 22244 evlslem4 22264 evlsevl 22320 matbas2d 22617 tsmsxp 24349 ustssel 24400 ustfilxp 24407 trust 24423 restutop 24431 trcfilu 24487 cfiluweak 24488 imasdsf1olem 24567 metustfbas 24751 restmetu 24764 rrxsca 25592 madeval 28062 perpln1 29027 perpln2 29028 isperp 29029 suppovss 33063 fsuppcurry1 33106 fsuppcurry2 33107 hashxpe 33189 gsumpart 33414 gsumwrd2dccat 33429 elrgspnlem2 33594 elrgspnsubrunlem2 33599 erlval 33609 rlocval 33610 rlocbas 33619 rlocaddval 33620 rlocmulval 33621 fedgmullem1 34050 fedgmullem2 34051 fedgmul 34052 metidval 34311 esumiun 34515 filnetlem3 36931 numiunnum 37021 bj-imdirvallem 37864 bj-imdirval2 37867 bj-imdirco 37874 bj-iminvval2 37878 isrngod 38589 isgrpda 38646 iscringd 38689 aks6d1c6lem2 42978 wdom2d2 43802 unxpwdom3 43862 trclubgNEW 44384 relexpxpmin 44483 rfovd 44767 rfovcnvf1od 44770 fsovrfovd 44775 dvsinax 46667 sge0xp 47183 hoicvr 47302 gpgvtx 48848 gpgiedg 48849 imasubclem1 49922 fucofvalg 50136 |
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