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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 4586 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5394 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5395 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7723 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2857 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 Vcvv 3453 ∪ cun 3902 {csn 4581 {cpr 4583 {ctp 4585 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-sep 5245 ax-pr 5389 ax-un 7714 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-tru 1562 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-v 3455 df-un 3909 df-ss 3921 df-sn 4582 df-pr 4584 df-tp 4586 df-uni 4865 |
| This theorem is referenced by: fr3nr 7751 en3lp 9566 prdsval 17467 imasval 17524 fnfuc 17964 fucval 17977 setcval 18093 catcval 18116 estrcval 18139 estrreslem1 18152 estrres 18154 fnxpc 18191 xpcval 18192 efmnd 18887 cnfldex 21407 xrsex 21421 psrval 21947 om1val 25072 rlocbas 33410 rlocaddval 33411 rlocmulval 33412 idlsrgval 33660 evl1deg2 33734 signswbase 34812 signswplusg 34813 ldualset 39713 erngset 41388 erngset-rN 41396 dvaset 41593 dvhset 41669 hlhilset 42522 rabren3dioph 43356 mendval 43720 clsk1indlem4 44584 clsk1indlem1 44585 grtrimap 48534 usgrgrtrirex 48536 grlimgrtri 48589 rngcvalALTV 48851 ringcvalALTV 48875 lmod1zrnlvec 49080 mndtcval 50164 |
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