MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  fmptpr Structured version   Visualization version   GIF version

Theorem fmptpr 7170
Description: Express a pair function in maps-to notation. (Contributed by Thierry Arnoux, 3-Jan-2017.)
Hypotheses
Ref Expression
fmptpr.1 (𝜑𝐴𝑉)
fmptpr.2 (𝜑𝐵𝑊)
fmptpr.3 (𝜑𝐶𝑋)
fmptpr.4 (𝜑𝐷𝑌)
fmptpr.5 ((𝜑𝑥 = 𝐴) → 𝐸 = 𝐶)
fmptpr.6 ((𝜑𝑥 = 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
StepHypRef Expression
1 df-pr 4591 . . 3 {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩} = ({⟨𝐴, 𝐶⟩} ∪ {⟨𝐵, 𝐷⟩})
21a1i 11 . 2 (𝜑 → {⟨𝐴, 𝐶⟩, ⟨𝐵, 𝐷⟩} = ({⟨𝐴, 𝐶⟩} ∪ {⟨𝐵, 𝐷⟩}))
3 fmptpr.5 . . . 4 ((𝜑𝑥 = 𝐴) → 𝐸 = 𝐶)
4 fmptpr.1 . . . 4 (𝜑𝐴𝑉)
5 fmptpr.3 . . . 4 (𝜑𝐶𝑋)
63, 4, 5fmptsnd 7167 . . 3 (𝜑 → {⟨𝐴, 𝐶⟩} = (𝑥 ∈ {𝐴} ↦ 𝐸))
76uneq1d 4120 . 2 (𝜑 → ({⟨𝐴, 𝐶⟩} ∪ {⟨𝐵, 𝐷⟩}) = ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {⟨𝐵, 𝐷⟩}))
8 fmptpr.2 . . 3 (𝜑𝐵𝑊)
9 fmptpr.4 . . 3 (𝜑𝐷𝑌)
10 df-pr 4591 . . . . 5 {𝐴, 𝐵} = ({𝐴} ∪ {𝐵})
1110eqcomi 2771 . . . 4 ({𝐴} ∪ {𝐵}) = {𝐴, 𝐵}
1211a1i 11 . . 3 (𝜑 → ({𝐴} ∪ {𝐵}) = {𝐴, 𝐵})
13 fmptpr.6 . . 3 ((𝜑𝑥 = 𝐵) → 𝐸 = 𝐷)
148, 9, 12, 13fmptapd 7169 . 2 (𝜑 → ((𝑥 ∈ {𝐴} ↦ 𝐸) ∪ {⟨𝐵, 𝐷⟩}) = (𝑥 ∈ {𝐴, 𝐵} ↦ 𝐸))
152, 7, 143eqtrd 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