| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > fvpr2 | Structured version Visualization version GIF version | ||
| Description: The value of a function with a domain of two elements. (Contributed by Jeff Madsen, 20-Jun-2010.) (Proof shortened by BJ, 26-Sep-2024.) |
| Ref | Expression |
|---|---|
| fvpr2.1 | ⊢ 𝐵 ∈ V |
| fvpr2.2 | ⊢ 𝐷 ∈ V |
| Ref | Expression |
|---|---|
| fvpr2 | ⊢ (𝐴 ≠ 𝐵 → ({〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}‘𝐵) = 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fvpr2.1 | . 2 ⊢ 𝐵 ∈ V | |
| 2 | fvpr2.2 | . 2 ⊢ 𝐷 ∈ V | |
| 3 | fvpr2g 7227 | . 2 ⊢ ((𝐵 ∈ V ∧ 𝐷 ∈ V ∧ 𝐴 ≠ 𝐵) → ({〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}‘𝐵) = 𝐷) | |
| 4 | 1, 2, 3 | mp3an12 1481 | 1 ⊢ (𝐴 ≠ 𝐵 → ({〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉}‘𝐵) = 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 ≠ wne 2959 Vcvv 3454 {cpr 4590 〈cop 4840 ‘cfv 6566 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-12 2216 ax-ext 2735 ax-sep 5255 ax-nul 5266 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-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-br 5109 df-opab 5174 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-res 5670 df-iota 6520 df-fun 6568 df-fv 6574 |
| This theorem is used by: fprb 7230 fnprb 7245 m2detleiblem3 22999 m2detleiblem4 23000 axlowdimlem6 29582 umgr2v2evd2 30165 ex-fv 31101 bj-endcomp 38506 nnsum3primes4 49159 nnsum3primesgbe 49163 zlmodzxzldeplem3 49945 2arymaptfo 50097 ehl2eudisval0 50169 |
| Copyright terms: Public domain | W3C validator |