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| Mirrors > Home > MPE Home > Th. List > Mathboxes > ovsn2 | Structured version Visualization version GIF version | ||
| Description: The operation value of a singleton of an ordered triple is the last member. (Contributed by Zhi Wang, 22-Oct-2025.) |
| Ref | Expression |
|---|---|
| ovsn.1 | ⊢ 𝐶 ∈ V |
| Ref | Expression |
|---|---|
| ovsn2 | ⊢ (𝐴{〈𝐴, 𝐵, 𝐶〉}𝐵) = 𝐶 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ovsn.1 | . 2 ⊢ 𝐶 ∈ V | |
| 2 | ovsng2 50077 | . 2 ⊢ (𝐶 ∈ V → (𝐴{〈𝐴, 𝐵, 𝐶〉}𝐵) = 𝐶) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴{〈𝐴, 𝐵, 𝐶〉}𝐵) = 𝐶 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1569 ∈ wcel 2144 Vcvv 3450 {csn 4584 〈cotp 4857 (class class class)co 7422 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-ot 4858 df-uni 4867 df-br 5103 df-opab 5167 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-iota 6496 df-fun 6543 df-fv 6549 df-ov 7425 |
| This theorem is used by: isinito2lem 50740 isinito3 50742 mndtchom 50829 incat 50846 setc1onsubc 50847 |
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