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Mirrors > Home > MPE Home > Th. List > oteqex2 | Structured version Visualization version GIF version |
Description: Equivalence of existence implied by equality of ordered triples. (Contributed by NM, 26-Apr-2015.) |
Ref | Expression |
---|---|
oteqex2 | ⊢ (〈〈𝐴, 𝐵〉, 𝐶〉 = 〈〈𝑅, 𝑆〉, 𝑇〉 → (𝐶 ∈ V ↔ 𝑇 ∈ V)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | opeqex 5353 | . 2 ⊢ (〈〈𝐴, 𝐵〉, 𝐶〉 = 〈〈𝑅, 𝑆〉, 𝑇〉 → ((〈𝐴, 𝐵〉 ∈ V ∧ 𝐶 ∈ V) ↔ (〈𝑅, 𝑆〉 ∈ V ∧ 𝑇 ∈ V))) | |
2 | opex 5321 | . . 3 ⊢ 〈𝐴, 𝐵〉 ∈ V | |
3 | 2 | biantrur 534 | . 2 ⊢ (𝐶 ∈ V ↔ (〈𝐴, 𝐵〉 ∈ V ∧ 𝐶 ∈ V)) |
4 | opex 5321 | . . 3 ⊢ 〈𝑅, 𝑆〉 ∈ V | |
5 | 4 | biantrur 534 | . 2 ⊢ (𝑇 ∈ V ↔ (〈𝑅, 𝑆〉 ∈ V ∧ 𝑇 ∈ V)) |
6 | 1, 3, 5 | 3bitr4g 317 | 1 ⊢ (〈〈𝐴, 𝐵〉, 𝐶〉 = 〈〈𝑅, 𝑆〉, 𝑇〉 → (𝐶 ∈ V ↔ 𝑇 ∈ V)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1538 ∈ wcel 2111 Vcvv 3441 〈cop 4531 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-if 4426 df-sn 4526 df-pr 4528 df-op 4532 |
This theorem is referenced by: oteqex 5355 |
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