| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > fmptpr | Structured version Visualization version GIF version | ||
| Description: Express a pair function in maps-to notation. (Contributed by Thierry Arnoux, 3-Jan-2017.) |
| Ref | Expression |
|---|---|
| fmptpr.1 | ⊢ (𝜑 → 𝐴 ∈ 𝑉) |
| fmptpr.2 | ⊢ (𝜑 → 𝐵 ∈ 𝑊) |
| fmptpr.3 | ⊢ (𝜑 → 𝐶 ∈ 𝑋) |
| fmptpr.4 | ⊢ (𝜑 → 𝐷 ∈ 𝑌) |
| fmptpr.5 | ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → 𝐸 = 𝐶) |
| fmptpr.6 | ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐸 = 𝐷) |
| Ref | Expression |
|---|---|
| fmptpr | ⊢ (𝜑 → {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-pr 4591 | . . 3 ⊢ {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = ({〈𝐴, 𝐶〉} ∪ {〈𝐵, 𝐷〉}) | |
| 2 | 1 | a1i 11 | . 2 ⊢ (𝜑 → {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = ({〈𝐴, 𝐶〉} ∪ {〈𝐵, 𝐷〉})) |
| 3 | fmptpr.5 | . . . 4 ⊢ ((𝜑 ∧ 𝑥 = 𝐴) → 𝐸 = 𝐶) | |
| 4 | fmptpr.1 | . . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑉) | |
| 5 | fmptpr.3 | . . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑋) | |
| 6 | 3, 4, 5 | fmptsnd 7167 | . . 3 ⊢ (𝜑 → {〈𝐴, 𝐶〉} = (𝑥 ∈ {𝐴} ↦ 𝐸)) |
| 7 | 6 | uneq1d 4120 | . 2 ⊢ (𝜑 → ({〈𝐴, 𝐶〉} ∪ {〈𝐵, 𝐷〉}) = ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {〈𝐵, 𝐷〉})) |
| 8 | fmptpr.2 | . . 3 ⊢ (𝜑 → 𝐵 ∈ 𝑊) | |
| 9 | fmptpr.4 | . . 3 ⊢ (𝜑 → 𝐷 ∈ 𝑌) | |
| 10 | df-pr 4591 | . . . . 5 ⊢ {𝐴, 𝐵} = ({𝐴} ∪ {𝐵}) | |
| 11 | 10 | eqcomi 2771 | . . . 4 ⊢ ({𝐴} ∪ {𝐵}) = {𝐴, 𝐵} |
| 12 | 11 | a1i 11 | . . 3 ⊢ (𝜑 → ({𝐴} ∪ {𝐵}) = {𝐴, 𝐵}) |
| 13 | fmptpr.6 | . . 3 ⊢ ((𝜑 ∧ 𝑥 = 𝐵) → 𝐸 = 𝐷) | |
| 14 | 8, 9, 12, 13 | fmptapd 7169 | . 2 ⊢ (𝜑 → ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {〈𝐵, 𝐷〉}) = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
| 15 | 2, 7, 14 | 3eqtrd 2801 | 1 ⊢ (𝜑 → {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 400 = wceq 1569 ∈ wcel 2142 ∪ cun 3902 {csn 4588 {cpr 4590 〈cop 4594 ↦ cmpt 5191 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1824 ax-4 1838 ax-5 1939 ax-6 1996 ax-7 2037 ax-8 2144 ax-9 2152 ax-10 2175 ax-11 2191 ax-12 2212 ax-ext 2734 ax-sep 5256 ax-pr 5403 |
| This proof depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1104 df-tru 1572 df-fal 1582 df-ex 1809 df-nf 1813 df-sb 2096 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3416 df-v 3456 df-sbc 3744 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4487 df-sn 4589 df-pr 4591 df-op 4595 df-opab 5173 df-mpt 5192 |
| This theorem is used by: pmtrprfvalrn 19564 esumsnf 34463 sge0sn 47121 zlmodzxzscm 49165 zlmodzxzadd 49166 |
| Copyright terms: Public domain | W3C validator |