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| Mirrors > Home > MPE Home > Th. List > tpex | Structured version Visualization version GIF version | ||
| Description: An unordered triple of classes exists. (Contributed by NM, 10-Apr-1994.) |
| Ref | Expression |
|---|---|
| tpex | ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-tp 4573 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5375 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5376 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7691 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2833 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 Vcvv 3430 ∪ cun 3888 {csn 4568 {cpr 4570 {ctp 4572 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5231 ax-pr 5370 ax-un 7682 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3432 df-un 3895 df-ss 3907 df-sn 4569 df-pr 4571 df-tp 4573 df-uni 4852 |
| This theorem is referenced by: fr3nr 7719 en3lp 9526 prdsval 17409 imasval 17466 fnfuc 17906 fucval 17919 setcval 18035 catcval 18058 estrcval 18081 estrreslem1 18094 estrres 18096 fnxpc 18133 xpcval 18134 efmnd 18829 cnfldex 21347 xrsex 21374 psrval 21905 om1val 25007 rlocbas 33343 rlocaddval 33344 rlocmulval 33345 idlsrgval 33578 evl1deg2 33652 signswbase 34714 signswplusg 34715 ldualset 39585 erngset 41260 erngset-rN 41268 dvaset 41465 dvhset 41541 hlhilset 42394 rabren3dioph 43261 mendval 43625 clsk1indlem4 44489 clsk1indlem1 44490 grtrimap 48436 usgrgrtrirex 48438 grlimgrtri 48491 rngcvalALTV 48753 ringcvalALTV 48777 lmod1zrnlvec 48982 mndtcval 50066 |
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