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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 7453 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑊) → (𝐴 × 𝐵) ∈ V) | |
4 | 1, 2, 3 | syl2anc 587 | 1 ⊢ (𝜑 → (𝐴 × 𝐵) ∈ V) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2111 Vcvv 3441 × cxp 5517 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ral 3111 df-rex 3112 df-rab 3115 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-op 4532 df-uni 4801 df-opab 5093 df-xp 5525 df-rel 5526 |
This theorem is referenced by: cnvexg 7611 cofunexg 7632 oprabexd 7658 ofmresex 7668 opabex2 7737 offval22 7766 tposexg 7889 marypha1 8882 wdom2d 9028 ixpiunwdom 9038 fnct 9948 fpwwe2lem2 10043 fpwwe2lem5 10045 fpwwe2lem12 10052 fpwwelem 10056 canthwe 10062 pwxpndom 10077 gchhar 10090 trclexlem 14345 isacs1i 16920 brcic 17060 rescval2 17090 reschom 17092 rescabs 17095 setccofval 17334 estrccofval 17371 sylow2a 18736 lsmhash 18823 gsumxp 19089 gsumxp2 19093 opsrval 20714 opsrtoslem2 20724 evlslem4 20747 matbas2d 21028 tsmsxp 22760 ustssel 22811 ustfilxp 22818 trust 22835 restutop 22843 trcfilu 22900 cfiluweak 22901 imasdsf1olem 22980 metustfbas 23164 restmetu 23177 rrxsca 24000 perpln1 26504 perpln2 26505 isperp 26506 suppovss 30443 fsuppcurry1 30487 fsuppcurry2 30488 hashxpe 30555 gsumpart 30740 fedgmullem1 31113 fedgmullem2 31114 fedgmul 31115 metidval 31243 esumiun 31463 madeval 33402 filnetlem3 33841 bj-imdirvallem 34595 bj-imdirval2 34598 bj-imdirco 34605 bj-iminvval2 34609 isrngod 35336 isgrpda 35393 iscringd 35436 wdom2d2 39976 unxpwdom3 40039 trclubgNEW 40318 relexpxpmin 40418 rfovd 40702 rfovcnvf1od 40705 fsovrfovd 40710 dvsinax 42555 sge0xp 43068 |
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