| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > fntp | GIF version | ||
| Description: A function with a domain of three elements. (Contributed by NM, 14-Sep-2011.) (Revised by Mario Carneiro, 26-Apr-2015.) |
| Ref | Expression |
|---|---|
| fntp.1 | ⊢ 𝐴 ∈ V |
| fntp.2 | ⊢ 𝐵 ∈ V |
| fntp.3 | ⊢ 𝐶 ∈ V |
| fntp.4 | ⊢ 𝐷 ∈ V |
| fntp.5 | ⊢ 𝐸 ∈ V |
| fntp.6 | ⊢ 𝐹 ∈ V |
| Ref | Expression |
|---|---|
| fntp | ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} Fn {𝐴, 𝐵, 𝐶}) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fntp.1 | . . 3 ⊢ 𝐴 ∈ V | |
| 2 | fntp.2 | . . 3 ⊢ 𝐵 ∈ V | |
| 3 | fntp.3 | . . 3 ⊢ 𝐶 ∈ V | |
| 4 | fntp.4 | . . 3 ⊢ 𝐷 ∈ V | |
| 5 | fntp.5 | . . 3 ⊢ 𝐸 ∈ V | |
| 6 | fntp.6 | . . 3 ⊢ 𝐹 ∈ V | |
| 7 | 1, 2, 3, 4, 5, 6 | funtp 5408 | . 2 ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → Fun {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉}) |
| 8 | 4, 5, 6 | dmtpop 5237 | . . 3 ⊢ dom {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} = {𝐴, 𝐵, 𝐶} |
| 9 | 8 | a1i 9 | . 2 ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → dom {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} = {𝐴, 𝐵, 𝐶}) |
| 10 | df-fn 5354 | . 2 ⊢ ({〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} Fn {𝐴, 𝐵, 𝐶} ↔ (Fun {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} ∧ dom {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} = {𝐴, 𝐵, 𝐶})) | |
| 11 | 7, 9, 10 | sylanbrc 417 | 1 ⊢ ((𝐴 ≠ 𝐵 ∧ 𝐴 ≠ 𝐶 ∧ 𝐵 ≠ 𝐶) → {〈𝐴, 𝐷〉, 〈𝐵, 𝐸〉, 〈𝐶, 𝐹〉} Fn {𝐴, 𝐵, 𝐶}) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ w3a 1005 = wceq 1398 ∈ wcel 2203 ≠ wne 2412 Vcvv 2812 {ctp 3690 〈cop 3691 dom cdm 4748 Fun wfun 5345 Fn wfn 5346 |
| 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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-ral 2525 df-rex 2526 df-v 2814 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-nul 3508 df-pw 3670 df-sn 3694 df-pr 3695 df-tp 3696 df-op 3697 df-br 4109 df-opab 4171 df-id 4413 df-xp 4754 df-rel 4755 df-cnv 4756 df-co 4757 df-dm 4758 df-fun 5353 df-fn 5354 |
| This theorem is referenced by: (None) |
| Copyright terms: Public domain | W3C validator |