Theorem fmptpr 7192

Description: Express a pair function in maps-to notation. (Contributed by Thierry Arnoux, 3-Jan-2017.)

Hypotheses

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)

Assertion

Ref	Expression
fmptpr	⊢ (𝜑 → {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸))

Distinct variable groups:   𝑥,𝐴   𝑥,𝐵   𝑥,𝐶   𝑥,𝐷   𝜑,𝑥

Allowed substitution hints:   𝐸(𝑥)   𝑉(𝑥)   𝑊(𝑥)   𝑋(𝑥)   𝑌(𝑥)

Proof of Theorem fmptpr

Step	Hyp	Ref	Expression
1		df-pr 4629	. . 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 7189	. . 3 ⊢ (𝜑 → {⟨𝐴, 𝐶⟩} = (𝑥 ∈ {𝐴} ↦ 𝐸))
7	6	uneq1d 4167	. 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 4629	. . . . 5 ⊢ {𝐴, 𝐵} = ({𝐴} ∪ {𝐵})
11	10	eqcomi 2746	. . . 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 7191	. 2 ⊢ (𝜑 → ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {⟨𝐵, 𝐷⟩}) = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸))
15	2, 7, 14	3eqtrd 2781	1 ⊢ (𝜑 → {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩} = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸))

Syntax hints:   → wi 4   ∧ wa 395   = wceq 1540   ∈ wcel 2108   ∪ cun 3949  {csn 4626  {cpr 4628  ⟨cop 4632   ↦ cmpt 5225

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 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-sbc 3789  df-dif 3954  df-un 3956  df-ss 3968  df-nul 4334  df-if 4526  df-sn 4627  df-pr 4629  df-op 4633  df-opab 5206  df-mpt 5226

This theorem is referenced by:  pmtrprfvalrn  19506  esumsnf  34065  sge0sn  46394  zlmodzxzscm  48273  zlmodzxzadd  48274