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| Mirrors > Home > MPE Home > Th. List > otex | Structured version Visualization version GIF version | ||
| Description: An ordered triple of classes is a set. (Contributed by NM, 3-Apr-2015.) |
| Ref | Expression |
|---|---|
| otex | ⊢ 〈𝐴, 𝐵, 𝐶〉 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ot 4593 | . 2 ⊢ 〈𝐴, 𝐵, 𝐶〉 = 〈〈𝐴, 𝐵〉, 𝐶〉 | |
| 2 | opex 5432 | . 2 ⊢ 〈〈𝐴, 𝐵〉, 𝐶〉 ∈ V | |
| 3 | 1, 2 | eqeltri 2857 | 1 ⊢ 〈𝐴, 𝐵, 𝐶〉 ∈ V |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2145 Vcvv 3451 〈cop 4590 〈cotp 4592 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-ext 2733 ax-sep 5249 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3453 df-un 3904 df-in 3906 df-ss 3916 df-sn 4585 df-pr 4587 df-op 4591 df-ot 4593 |
| This theorem is used by: euotd 5486 ralxp3f 8154 xpord3lem 8166 xpord3pred 8169 splval 14900 splcl 14901 idaval 18233 idaf 18238 eldmcoa 18240 coaval 18243 mamufval 22707 msrval 36303 msrf 36307 mapdhval 42781 mndtcco 50692 |
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