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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 4582 | . 2 ⊢ {𝐴, 𝐵, 𝐶} = ({𝐴, 𝐵} ∪ {𝐶}) | |
| 2 | prex 5376 | . . 3 ⊢ {𝐴, 𝐵} ∈ V | |
| 3 | snex 5375 | . . 3 ⊢ {𝐶} ∈ V | |
| 4 | 2, 3 | unex 7680 | . 2 ⊢ ({𝐴, 𝐵} ∪ {𝐶}) ∈ V |
| 5 | 1, 4 | eqeltri 2824 | 1 ⊢ {𝐴, 𝐵, 𝐶} ∈ V |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2109 Vcvv 3436 ∪ cun 3901 {csn 4577 {cpr 4579 {ctp 4581 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2701 ax-sep 5235 ax-nul 5245 ax-pr 5371 ax-un 7671 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2708 df-cleq 2721 df-clel 2803 df-v 3438 df-dif 3906 df-un 3908 df-ss 3920 df-nul 4285 df-sn 4578 df-pr 4580 df-tp 4582 df-uni 4859 |
| This theorem is referenced by: fr3nr 7708 en3lp 9510 prdsval 17359 imasval 17415 fnfuc 17855 fucval 17868 setcval 17984 catcval 18007 estrcval 18030 estrreslem1 18043 estrres 18045 fnxpc 18082 xpcval 18083 efmnd 18744 cnfldex 21264 xrsex 21291 psrval 21822 om1val 24928 rlocbas 33208 rlocaddval 33209 rlocmulval 33210 idlsrgval 33441 evl1deg2 33513 signswbase 34528 signswplusg 34529 ldualset 39114 erngset 40789 erngset-rN 40797 dvaset 40994 dvhset 41070 hlhilset 41923 rabren3dioph 42798 mendval 43162 clsk1indlem4 44027 clsk1indlem1 44028 grtrimap 47942 usgrgrtrirex 47944 grlimgrtri 47997 rngcvalALTV 48259 ringcvalALTV 48283 lmod1zrnlvec 48489 mndtcval 49574 |
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