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| Mirrors > Home > MPE Home > Th. List > sqxpexg | Structured version Visualization version GIF version | ||
| Description: The Cartesian square of a set is a set. (Contributed by AV, 13-Jan-2020.) |
| Ref | Expression |
|---|---|
| sqxpexg | ⊢ (𝐴 ∈ 𝑉 → (𝐴 × 𝐴) ∈ V) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | xpexg 7791 | . 2 ⊢ ((𝐴 ∈ 𝑉 ∧ 𝐴 ∈ 𝑉) → (𝐴 × 𝐴) ∈ V) | |
| 2 | 1 | anidms 577 | 1 ⊢ (𝐴 ∈ 𝑉 → (𝐴 × 𝐴) ∈ 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: resiexg 7951 erex 8773 hartogslem2 9567 harwdom 9615 dfac8b 10140 ac10ct 10143 canthwe 10766 cicer 18013 ssclem 18026 ipolerval 18738 dfrngc2 20913 dfringc2 20942 rngcresringcat 20954 mat0op 22767 matecl 22773 matlmod 22777 mattposvs 22803 ustval 24555 isust 24556 restutopopn 24590 ressuss 24614 ispsmet 24656 ismet 24675 isxmet 24676 abweex 35814 satef 36361 satefvfmla0 36363 satefvfmla1 36370 fin2so 38735 rtrclexlem 44819 isclintop 49519 isassintop 49522 rngccofvalALTV 49582 ringccofvalALTV 49616 2arymaptf 49979 relcic 50374 veronesematbasd 51292 veroquaddetzerod 51298 |
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