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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 7791 | . 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 2147 Vcvv 3454 × cxp 5654 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5253 ax-pow 5332 ax-pr 5396 ax-un 7778 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-opab 5172 df-xp 5662 df-rel 5663 |
| This theorem is used by: cnvexg 7963 fabexd 7976 cofunexg 7988 oprabexd 8014 ofmresex 8024 opabex2 8096 offval22 8127 sexp2 8193 sexp3 8200 tposexg 8288 mapunen 9196 marypha1 9456 wdom2d 9604 ixpiunwdom 9614 ttrclexg 9754 fnct 10650 fnctOLD 10651 fpwwe2lem2 10747 fpwwe2lem4 10749 fpwwe2lem11 10756 fpwwelem 10760 canthwe 10766 pwxpndom 10781 gchhar 10794 trclexlem 15179 isacs1i 17863 brcic 18005 rescval2 18035 reschom 18037 rescabs 18040 setccofval 18289 estrccofval 18335 sylow2a 19866 gsumxp 20223 gsumxp2 20227 opsrval 22388 opsrtoslem2 22398 evlslem4 22418 evlsevl 22474 matbas2d 22771 tsmsxp 24507 ustssel 24558 ustfilxp 24565 trust 24581 restutop 24589 trcfilu 24645 cfiluweak 24646 imasdsf1olem 24725 metustfbas 24909 restmetu 24922 rrxsca 25750 madeval 28251 perpln1 29218 perpln2 29219 isperp 29220 suppovss 33348 fsuppcurry1 33389 fsuppcurry2 33390 hashxpe 33472 gsumpart 33700 gsumwrd2dccat 33715 elrgspnlem2 33880 elrgspnsubrunlem2 33885 erlval 33895 rlocval 33896 rlocbas 33905 rlocaddval 33906 rlocmulval 33907 fedgmullem1 34344 fedgmullem2 34345 fedgmul 34346 metidval 34605 esumiun 34809 weexenwe 35861 j0ltalephlem 36020 filnetlem3 37359 numiunnum 37449 bj-imdirvallem 38306 bj-imdirval2 38309 bj-imdirco 38316 bj-iminvval2 38320 isrngod 39035 isgrpda 39092 iscringd 39135 aks6d1c6lem2 43424 wdom2d2 44246 unxpwdom3 44301 trclubgNEW 44821 relexpxpmin 44920 rfovd 45204 rfovcnvf1od 45207 fsovrfovd 45212 dvsinax 47138 sge0xp 47654 hoicvr 47773 gpgvtx 49356 gpgiedg 49357 imasubclem1 50435 fucofvalg 50655 |
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