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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 7473 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
4 | 1, 2, 3 | syl2anc 586 | 1 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 Vcvv 3494 × cxp 5553 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4839 df-opab 5129 df-xp 5561 df-rel 5562 |
This theorem is referenced by: cnvexg 7629 cofunexg 7650 oprabexd 7676 ofmresex 7686 opabex2 7755 offval22 7783 tposexg 7906 marypha1 8898 wdom2d 9044 ixpiunwdom 9055 fnct 9959 fpwwe2lem2 10054 fpwwe2lem5 10056 fpwwe2lem12 10063 fpwwelem 10067 canthwe 10073 pwxpndom 10088 gchhar 10101 trclexlem 14354 isacs1i 16928 brcic 17068 rescval2 17098 reschom 17100 rescabs 17103 setccofval 17342 estrccofval 17379 sylow2a 18744 lsmhash 18831 gsumxp 19096 gsumxp2 19100 opsrval 20255 opsrtoslem2 20265 evlslem4 20288 matbas2d 21032 tsmsxp 22763 ustssel 22814 ustfilxp 22821 trust 22838 restutop 22846 trcfilu 22903 cfiluweak 22904 imasdsf1olem 22983 metustfbas 23167 restmetu 23180 rrxsca 23999 perpln1 26496 perpln2 26497 isperp 26498 suppovss 30426 fsuppcurry1 30461 fsuppcurry2 30462 hashxpe 30529 fedgmullem1 31025 fedgmullem2 31026 fedgmul 31027 metidval 31130 esumiun 31353 madeval 33289 filnetlem3 33728 bj-imdirval 34475 bj-imdirval2 34476 isrngod 35191 isgrpda 35248 iscringd 35291 wdom2d2 39652 unxpwdom3 39715 trclubgNEW 39998 relexpxpmin 40082 rfovd 40367 rfovcnvf1od 40370 fsovrfovd 40375 dvsinax 42217 sge0xp 42731 |
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