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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 4130 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
2 | prex 4836 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
3 | snex 4835 | . . 3 ⊢ {𝐶} ∈ V | |
4 | 2, 3 | unex 6854 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
5 | 1, 4 | eqeltri 2684 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 1977 Vcvv 3173 ∪ cun 3538 {csn 4125 {cpr 4127 {ctp 4129 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-rex 2902 df-v 3175 df-dif 3543 df-un 3545 df-nul 3875 df-sn 4126 df-pr 4128 df-tp 4130 df-uni 4373 |
This theorem is referenced by: fr3nr 6871 en3lp 8396 prdsval 15938 imasval 15994 fnfuc 16428 fucval 16441 setcval 16550 catcval 16569 estrcval 16587 estrreslem1 16600 estrres 16602 fnxpc 16639 xpcval 16640 symgval 17622 psrval 19183 xrsex 19580 om1val 22638 wlkntrl 26092 constr2trl 26129 constr2spth 26130 constr2pth 26131 2pthon 26132 2pthon3v 26134 usgra2adedgwlkon 26143 usg2wlk 26145 usg2wlkon 26146 constr3lem1 26173 constr3cyclpe 26191 3v3e3cycl2 26192 signswbase 29957 signswplusg 29958 ldualset 33430 erngset 35106 erngset-rN 35114 dvaset 35311 dvhset 35388 hlhilset 36244 rabren3dioph 36397 mendval 36772 clsk1indlem4 37362 clsk1indlem1 37363 rngcvalALTV 41753 ringcvalALTV 41799 lmod1zrnlvec 42077 |
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