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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 4651 | . . 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 7203 | . . 3 ⊢ (𝜑 → {〈𝐴, 𝐶〉} = (𝑥 ∈ {𝐴} ↦ 𝐸)) |
7 | 6 | uneq1d 4190 | . 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 4651 | . . . . 5 ⊢ {𝐴, 𝐵} = ({𝐴} ∪ {𝐵}) | |
11 | 10 | eqcomi 2749 | . . . 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 7205 | . 2 ⊢ (𝜑 → ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {〈𝐵, 𝐷〉}) = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
15 | 2, 7, 14 | 3eqtrd 2784 | 1 ⊢ (𝜑 → {〈𝐴, 𝐶〉, 〈𝐵, 𝐷〉} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1537 ∈ wcel 2108 ∪ cun 3974 {csn 4648 {cpr 4650 〈cop 4654 ↦ cmpt 5249 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ne 2947 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-sbc 3805 df-dif 3979 df-un 3981 df-ss 3993 df-nul 4353 df-if 4549 df-sn 4649 df-pr 4651 df-op 4655 df-opab 5229 df-mpt 5250 |
This theorem is referenced by: pmtrprfvalrn 19530 esumsnf 34028 sge0sn 46300 zlmodzxzscm 48082 zlmodzxzadd 48083 |
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