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| Mirrors > Home > MPE Home > Th. List > fvtp3 | Structured version Visualization version GIF version | ||
| Description: The third value of a function with a domain of three elements. (Contributed by NM, 14-Sep-2011.) |
| Ref | Expression |
|---|---|
| fvtp3.1 | ⊢ 𝐶 ∈ V |
| fvtp3.4 | ⊢ 𝐹 ∈ V |
| Ref | Expression |
|---|---|
| fvtp3 | ⊢ ((𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → ({〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉}‘𝐶) = 𝐹) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | tprot 4683 | . . 3 ⊢ {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} = {〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉, 〈𝐴, 𝐷〉} | |
| 2 | 1 | fveq1i 6830 | . 2 ⊢ ({〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉}‘𝐶) = ({〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉, 〈𝐴, 𝐷〉}‘𝐶) |
| 3 | necom 2983 | . . . 4 ⊢ (𝐴 ≠ 𝐶 ↔ 𝐶 ≠ 𝐴) | |
| 4 | fvtp3.1 | . . . . 5 ⊢ 𝐶 ∈ V | |
| 5 | fvtp3.4 | . . . . 5 ⊢ 𝐹 ∈ V | |
| 6 | 4, 5 | fvtp2 7140 | . . . 4 ⊢ ((𝐵 ≠ 𝐶 ∧ 𝐶 ≠ 𝐴) → ({〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉, 〈𝐴, 𝐷〉}‘𝐶) = 𝐹) |
| 7 | 3, 6 | sylan2b 595 | . . 3 ⊢ ((𝐵 ≠ 𝐶 ∧ 𝐴 ≠ 𝐶) → ({〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉, 〈𝐴, 𝐷〉}‘𝐶) = 𝐹) |
| 8 | 7 | ancoms 458 | . 2 ⊢ ((𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → ({〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉, 〈𝐴, 𝐷〉}‘𝐶) = 𝐹) |
| 9 | 2, 8 | eqtrid 2782 | 1 ⊢ ((𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → ({〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉}‘𝐶) = 𝐹) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ≠ wne 2930 Vcvv 3427 {ctp 4561 〈cop 4563 ‘cfv 6487 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-12 2184 ax-ext 2707 ax-sep 5220 ax-nul 5230 ax-pr 5364 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-ne 2931 df-ral 3050 df-rex 3060 df-rab 3388 df-v 3429 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4264 df-if 4457 df-sn 4558 df-pr 4560 df-tp 4562 df-op 4564 df-uni 4841 df-br 5075 df-opab 5137 df-id 5515 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-res 5632 df-iota 6443 df-fun 6489 df-fv 6495 |
| This theorem is referenced by: fntpb 7153 rabren3dioph 43231 nnsum4primesodd 48260 nnsum4primesoddALTV 48261 |
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