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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 4595 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5411 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5412 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7744 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2859 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2143 Vcvv 3455 ∪ cun 3904 {csn 4590 {cpr 4592 {ctp 4594 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 ax-sep 5258 ax-pr 5406 ax-un 7734 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-tru 1573 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-v 3457 df-un 3911 df-ss 3923 df-sn 4591 df-pr 4593 df-tp 4595 df-uni 4874 |
| This theorem is referenced by: fr3nr 7772 en3lp 9584 prdsval 17509 imasval 17566 fnfuc 18006 fucval 18019 setcval 18135 catcval 18158 estrcval 18181 estrreslem1 18194 estrres 18196 fnxpc 18233 xpcval 18234 efmnd 18930 cnfldex 21506 xrsex 21520 psrval 22046 om1val 25170 rlocbas 33566 rlocaddval 33567 rlocmulval 33568 idlsrgval 33771 evl1deg2 33845 signswbase 34919 signswplusg 34920 ldualset 39877 erngset 41552 erngset-rN 41560 dvaset 41757 dvhset 41833 hlhilset 42686 rabren3dioph 43522 mendval 43886 clsk1indlem4 44750 clsk1indlem1 44751 grtrimap 48690 usgrgrtrirex 48692 grlimgrtri 48745 rngcvalALTV 49007 ringcvalALTV 49031 lmod1zrnlvec 49251 mndtcval 50334 |
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