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Mirrors > Home > ILE Home > Th. List > ftp | 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 1176 | . 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 1176 | . 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 1176 | . 2 ⊢ (𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) |
13 | ftpg 5713 | . 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 1347 | 1 ⊢ {〈𝐴, 𝑋〉, 〈𝐵, 𝑌〉, 〈𝐶, 𝑍〉}:{𝐴, 𝐵, 𝐶}⟶{𝑋, 𝑌, 𝑍} |
Colors of variables: wff set class |
Syntax hints: ∧ w3a 979 ∈ wcel 2158 ≠ wne 2357 Vcvv 2749 {ctp 3606 〈cop 3607 ⟶wf 5224 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1457 ax-7 1458 ax-gen 1459 ax-ie1 1503 ax-ie2 1504 ax-8 1514 ax-10 1515 ax-11 1516 ax-i12 1517 ax-bndl 1519 ax-4 1520 ax-17 1536 ax-i9 1540 ax-ial 1544 ax-i5r 1545 ax-14 2161 ax-ext 2169 ax-sep 4133 ax-pow 4186 ax-pr 4221 |
This theorem depends on definitions: df-bi 117 df-3an 981 df-tru 1366 df-fal 1369 df-nf 1471 df-sb 1773 df-eu 2039 df-mo 2040 df-clab 2174 df-cleq 2180 df-clel 2183 df-nfc 2318 df-ne 2358 df-ral 2470 df-rex 2471 df-reu 2472 df-v 2751 df-dif 3143 df-un 3145 df-in 3147 df-ss 3154 df-nul 3435 df-pw 3589 df-sn 3610 df-pr 3611 df-tp 3612 df-op 3613 df-br 4016 df-opab 4077 df-id 4305 df-xp 4644 df-rel 4645 df-cnv 4646 df-co 4647 df-dm 4648 df-rn 4649 df-fun 5230 df-fn 5231 df-f 5232 df-f1 5233 df-fo 5234 df-f1o 5235 |
This theorem is referenced by: (None) |
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