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Mirrors > Home > MPE Home > Th. List > fvtp2 | Structured version Visualization version GIF version |
Description: The second value of a function with a domain of three elements. (Contributed by NM, 14-Sep-2011.) |
Ref | Expression |
---|---|
fvtp2.1 | ⊢ 𝐵 ∈ V |
fvtp2.4 | ⊢ 𝐸 ∈ V |
Ref | Expression |
---|---|
fvtp2 | ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) → ({⟨𝐴, 𝐷⟩, ⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩}‘𝐵) = 𝐸) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | tprot 4754 | . . 3 ⊢ {⟨𝐴, 𝐷⟩, ⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩} = {⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩, ⟨𝐴, 𝐷⟩} | |
2 | 1 | fveq1i 6898 | . 2 ⊢ ({⟨𝐴, 𝐷⟩, ⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩}‘𝐵) = ({⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩, ⟨𝐴, 𝐷⟩}‘𝐵) |
3 | necom 2991 | . . 3 ⊢ (𝐴 ≠ 𝐵 ↔ 𝐵 ≠ 𝐴) | |
4 | fvtp2.1 | . . . . 5 ⊢ 𝐵 ∈ V | |
5 | fvtp2.4 | . . . . 5 ⊢ 𝐸 ∈ V | |
6 | 4, 5 | fvtp1 7207 | . . . 4 ⊢ ((𝐵 ≠ 𝐶 ∧ 𝐵 ≠ 𝐴) → ({⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩, ⟨𝐴, 𝐷⟩}‘𝐵) = 𝐸) |
7 | 6 | ancoms 458 | . . 3 ⊢ ((𝐵 ≠ 𝐴 ∧ 𝐵 ≠ 𝐶) → ({⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩, ⟨𝐴, 𝐷⟩}‘𝐵) = 𝐸) |
8 | 3, 7 | sylanb 580 | . 2 ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) → ({⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩, ⟨𝐴, 𝐷⟩}‘𝐵) = 𝐸) |
9 | 2, 8 | eqtrid 2780 | 1 ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐵 ≠ 𝐶) → ({⟨𝐴, 𝐷⟩, ⟨𝐵, 𝐸⟩, ⟨𝐶, 𝐹⟩}‘𝐵) = 𝐸) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1534 ∈ wcel 2099 ≠ wne 2937 Vcvv 3471 {ctp 4633 ⟨cop 4635 ‘cfv 6548 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1790 ax-4 1804 ax-5 1906 ax-6 1964 ax-7 2004 ax-8 2101 ax-9 2109 ax-10 2130 ax-11 2147 ax-12 2167 ax-ext 2699 ax-sep 5299 ax-nul 5306 ax-pr 5429 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 847 df-3or 1086 df-3an 1087 df-tru 1537 df-fal 1547 df-ex 1775 df-nf 1779 df-sb 2061 df-mo 2530 df-eu 2559 df-clab 2706 df-cleq 2720 df-clel 2806 df-ne 2938 df-ral 3059 df-rex 3068 df-rab 3430 df-v 3473 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-nul 4324 df-if 4530 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4909 df-br 5149 df-opab 5211 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-res 5690 df-iota 6500 df-fun 6550 df-fv 6556 |
This theorem is referenced by: fvtp3 7209 fntpb 7221 rabren3dioph 42235 nnsum4primesodd 47136 nnsum4primesoddALTV 47137 |
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