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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 4590 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5399 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5400 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7731 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2861 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2145 Vcvv 3457 ∪ cun 3905 {csn 4585 {cpr 4587 {ctp 4589 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 ax-sep 5250 ax-pr 5394 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-tru 1566 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-v 3459 df-un 3912 df-ss 3924 df-sn 4586 df-pr 4588 df-tp 4590 df-uni 4868 |
| This theorem is referenced by: fr3nr 7759 en3lp 9571 prdsval 17496 imasval 17553 fnfuc 17993 fucval 18006 setcval 18122 catcval 18145 estrcval 18168 estrreslem1 18181 estrres 18183 fnxpc 18220 xpcval 18221 efmnd 18917 cnfldex 21482 xrsex 21496 psrval 22022 om1val 25146 rlocbas 33496 rlocaddval 33497 rlocmulval 33498 idlsrgval 33705 evl1deg2 33779 signswbase 34853 signswplusg 34854 ldualset 39756 erngset 41431 erngset-rN 41439 dvaset 41636 dvhset 41712 hlhilset 42565 rabren3dioph 43399 mendval 43763 clsk1indlem4 44627 clsk1indlem1 44628 grtrimap 48569 usgrgrtrirex 48571 grlimgrtri 48624 rngcvalALTV 48886 ringcvalALTV 48910 lmod1zrnlvec 49126 mndtcval 50209 |
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