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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 4572 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5380 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5381 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7698 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2832 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 Vcvv 3429 ∪ cun 3887 {csn 4567 {cpr 4569 {ctp 4571 |
| 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 2708 ax-sep 5231 ax-pr 5375 ax-un 7689 |
| 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 2715 df-cleq 2728 df-clel 2811 df-v 3431 df-un 3894 df-ss 3906 df-sn 4568 df-pr 4570 df-tp 4572 df-uni 4851 |
| This theorem is referenced by: fr3nr 7726 en3lp 9535 prdsval 17418 imasval 17475 fnfuc 17915 fucval 17928 setcval 18044 catcval 18067 estrcval 18090 estrreslem1 18103 estrres 18105 fnxpc 18142 xpcval 18143 efmnd 18838 cnfldex 21355 xrsex 21369 psrval 21895 om1val 24997 rlocbas 33328 rlocaddval 33329 rlocmulval 33330 idlsrgval 33563 evl1deg2 33637 signswbase 34698 signswplusg 34699 ldualset 39571 erngset 41246 erngset-rN 41254 dvaset 41451 dvhset 41527 hlhilset 42380 rabren3dioph 43243 mendval 43607 clsk1indlem4 44471 clsk1indlem1 44472 grtrimap 48424 usgrgrtrirex 48426 grlimgrtri 48479 rngcvalALTV 48741 ringcvalALTV 48765 lmod1zrnlvec 48970 mndtcval 50054 |
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