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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 4567 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5374 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5375 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7694 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2836 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2119 Vcvv 3432 ∪ cun 3888 {csn 4562 {cpr 4564 {ctp 4566 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2712 ax-sep 5225 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-tru 1550 df-ex 1787 df-sb 2074 df-clab 2719 df-cleq 2732 df-clel 2815 df-v 3434 df-un 3895 df-ss 3907 df-sn 4563 df-pr 4565 df-tp 4567 df-uni 4846 |
| This theorem is referenced by: fr3nr 7722 en3lp 9533 prdsval 17416 imasval 17473 fnfuc 17913 fucval 17926 setcval 18042 catcval 18065 estrcval 18088 estrreslem1 18101 estrres 18103 fnxpc 18140 xpcval 18141 efmnd 18836 cnfldex 21357 xrsex 21371 psrval 21897 om1val 25022 rlocbas 33355 rlocaddval 33356 rlocmulval 33357 idlsrgval 33593 evl1deg2 33667 signswbase 34745 signswplusg 34746 ldualset 39624 erngset 41299 erngset-rN 41307 dvaset 41504 dvhset 41580 hlhilset 42433 rabren3dioph 43267 mendval 43631 clsk1indlem4 44495 clsk1indlem1 44496 grtrimap 48446 usgrgrtrirex 48448 grlimgrtri 48501 rngcvalALTV 48763 ringcvalALTV 48787 lmod1zrnlvec 48992 mndtcval 50076 |
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