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| 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 4604 | . . 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 7161 | . . 3 ⊢ (𝜑 → {〈𝐴, 𝐶〉} = (𝑥 ∈ {𝐴} ↦ 𝐸)) |
| 7 | 6 | uneq1d 4142 | . 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 4604 | . . . . 5 ⊢ {𝐴, 𝐵} = ({𝐴} ∪ {𝐵}) | |
| 11 | 10 | eqcomi 2744 | . . . 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 7163 | . 2 ⊢ (𝜑 → ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {〈𝐵, 𝐷〉}) = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
| 15 | 2, 7, 14 | 3eqtrd 2774 | 1 ⊢ (𝜑 → {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1540 ∈ wcel 2108 ∪ cun 3924 {csn 4601 {cpr 4603 〈cop 4607 ↦ cmpt 5201 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pr 5402 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3061 df-rab 3416 df-v 3461 df-sbc 3766 df-dif 3929 df-un 3931 df-ss 3943 df-nul 4309 df-if 4501 df-sn 4602 df-pr 4604 df-op 4608 df-opab 5182 df-mpt 5202 |
| This theorem is referenced by: pmtrprfvalrn 19469 esumsnf 34095 sge0sn 46408 zlmodzxzscm 48332 zlmodzxzadd 48333 |
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