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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 3451 × cxp 5649 |
| 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 2733 ax-sep 5249 ax-pow 5327 ax-pr 5391 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 2740 df-cleq 2753 df-clel 2836 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 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 5657 df-rel 5658 |
| This theorem is used by: cnvexg 7925 fabexd 7938 cofunexg 7950 oprabexd 7976 ofmresex 7986 opabex2 8057 offval22 8088 sexp2 8147 sexp3 8154 tposexg 8241 mapunen 9149 marypha1 9410 wdom2d 9558 ixpiunwdom 9568 ttrclexg 9708 fnct 10601 fnctOLD 10602 fpwwe2lem2 10698 fpwwe2lem4 10700 fpwwe2lem11 10707 fpwwelem 10711 canthwe 10717 pwxpndom 10732 gchhar 10745 trclexlem 15127 isacs1i 17811 brcic 17953 rescval2 17983 reschom 17985 rescabs 17988 setccofval 18237 estrccofval 18283 sylow2a 19813 gsumxp 20170 gsumxp2 20174 opsrval 22335 opsrtoslem2 22345 evlslem4 22365 evlsevl 22421 matbas2d 22718 tsmsxp 24454 ustssel 24505 ustfilxp 24512 trust 24528 restutop 24536 trcfilu 24592 cfiluweak 24593 imasdsf1olem 24672 metustfbas 24856 restmetu 24869 rrxsca 25697 madeval 28200 perpln1 29167 perpln2 29168 isperp 29169 suppovss 33256 fsuppcurry1 33298 fsuppcurry2 33299 hashxpe 33381 gsumpart 33606 gsumwrd2dccat 33621 elrgspnlem2 33786 elrgspnsubrunlem2 33791 erlval 33801 rlocval 33802 rlocbas 33811 rlocaddval 33812 rlocmulval 33813 fedgmullem1 34243 fedgmullem2 34244 fedgmul 34245 metidval 34504 esumiun 34708 filnetlem3 37138 numiunnum 37228 bj-imdirvallem 38069 bj-imdirval2 38072 bj-imdirco 38079 bj-iminvval2 38083 isrngod 38800 isgrpda 38857 iscringd 38900 aks6d1c6lem2 43189 wdom2d2 43995 unxpwdom3 44055 trclubgNEW 44577 relexpxpmin 44676 rfovd 44960 rfovcnvf1od 44963 fsovrfovd 44968 dvsinax 46867 sge0xp 47383 hoicvr 47502 gpgvtx 49085 gpgiedg 49086 imasubclem1 50156 fucofvalg 50370 |
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