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| Mirrors > Home > MPE Home > Th. List > ftp | Structured version Visualization version GIF version | ||
| Description: A function with a domain of three elements. (Contributed by Stefan O'Rear, 17-Oct-2014.) (Proof shortened by Alexander van der Vekens, 23-Jan-2018.) |
| Ref | Expression |
|---|---|
| ftp.a | ⊢ 𝐴 ∈ V |
| ftp.b | ⊢ 𝐵 ∈ V |
| ftp.c | ⊢ 𝐶 ∈ V |
| ftp.d | ⊢ 𝑋 ∈ V |
| ftp.e | ⊢ 𝑌 ∈ V |
| ftp.f | ⊢ 𝑍 ∈ V |
| ftp.g | ⊢ 𝐴 ≠ 𝐵 |
| ftp.h | ⊢ 𝐴 ≠ 𝐶 |
| ftp.i | ⊢ 𝐵 ≠ 𝐶 |
| Ref | Expression |
|---|---|
| ftp | ⊢ {〈𝐴, 𝑋〉, 〈𝐵, 𝑌〉, 〈𝐶, 𝑍〉}:{𝐴, 𝐵, 𝐶}⟶{𝑋, 𝑌, 𝑍} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ftp.a | . . 3 ⊢ 𝐴 ∈ V | |
| 2 | ftp.b | . . 3 ⊢ 𝐵 ∈ V | |
| 3 | ftp.c | . . 3 ⊢ 𝐶 ∈ V | |
| 4 | 1, 2, 3 | 3pm3.2i 1358 | . 2 ⊢ (𝐴 ∈ V ∧ 𝐵 ∈ V ∧ 𝐶 ∈ V) |
| 5 | ftp.d | . . 3 ⊢ 𝑋 ∈ V | |
| 6 | ftp.e | . . 3 ⊢ 𝑌 ∈ V | |
| 7 | ftp.f | . . 3 ⊢ 𝑍 ∈ V | |
| 8 | 5, 6, 7 | 3pm3.2i 1358 | . 2 ⊢ (𝑋 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ V) |
| 9 | ftp.g | . . 3 ⊢ 𝐴 ≠ 𝐵 | |
| 10 | ftp.h | . . 3 ⊢ 𝐴 ≠ 𝐶 | |
| 11 | ftp.i | . . 3 ⊢ 𝐵 ≠ 𝐶 | |
| 12 | 9, 10, 11 | 3pm3.2i 1358 | . 2 ⊢ (𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) |
| 13 | ftpg 7153 | . 2 ⊢ (((𝐴 ∈ V ∧ 𝐵 ∈ V ∧ 𝐶 ∈ V) ∧ (𝑋 ∈ V ∧ 𝑌 ∈ V ∧ 𝑍 ∈ V) ∧ (𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶)) → {〈𝐴, 𝑋〉, 〈𝐵, 𝑌〉, 〈𝐶, 𝑍〉}:{𝐴, 𝐵, 𝐶}⟶{𝑋, 𝑌, 𝑍}) | |
| 14 | 4, 8, 12, 13 | mp3an 1490 | 1 ⊢ {〈𝐴, 𝑋〉, 〈𝐵, 𝑌〉, 〈𝐶, 𝑍〉}:{𝐴, 𝐵, 𝐶}⟶{𝑋, 𝑌, 𝑍} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∧ w3a 1103 ∈ wcel 2145 ≠ wne 2955 Vcvv 3450 {ctp 4588 〈cop 4590 ⟶wf 6529 |
| 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-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-tp 4589 df-op 4591 df-br 5104 df-opab 5168 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 |
| This theorem is used by: rabren3dioph 43656 nnsum4primesodd 48712 nnsum4primesoddALTV 48713 |
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