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Theorem rnopab 5936
Description: The range of a class of ordered pairs. (Contributed by NM, 14-Aug-1995.) (Revised by Mario Carneiro, 4-Dec-2016.)
Assertion
Ref Expression
rnopab ran {⟨𝑥, 𝑦⟩ ∣ 𝜑} = {𝑦 ∣ ∃𝑥𝜑}
Distinct variable group:   𝑥,𝑦
Allowed substitution hints:   𝜑(𝑥, 𝑦)

Proof of Theorem rnopab
StepHypRef Expression
1 nfopab1 5175 . . 3 Ⅎ𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}
2 nfopab2 5176 . . 3 Ⅎ𝑦{⟨𝑥, 𝑦⟩ ∣ 𝜑}
31, 2dfrnf 5932 . 2 ran {⟨𝑥, 𝑦⟩ ∣ 𝜑} = {𝑦 ∣ ∃𝑥 𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}𝑦}
4 df-br 5104 . . . . 5 (𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}𝑦 ↔ ⟨𝑥, 𝑦⟩ ∈ {⟨𝑥, 𝑦⟩ ∣ 𝜑})
5 opabidw 5498 . . . . 5 (⟨𝑥, 𝑦⟩ ∈ {⟨𝑥, 𝑦⟩ ∣ 𝜑} ↔ 𝜑)
64, 5bitri 278 . . . 4 (𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}𝑦 ↔ 𝜑)
76exbii 1881 . . 3 (∃𝑥 𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}𝑦 ↔ ∃𝑥𝜑)
87abbii 2828 . 2 {𝑦 ∣ ∃𝑥 𝑥{⟨𝑥, 𝑦⟩ ∣ 𝜑}𝑦} = {𝑦 ∣ ∃𝑥𝜑}
93, 8eqtri 2784 1 ran {⟨𝑥, 𝑦⟩ ∣ 𝜑} = {𝑦 ∣ ∃𝑥𝜑}
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   = wceq 1570  ∃wex 1812   ∈ wcel 2145  {cab 2739  ⟨cop 4590   class class class wbr 5103  {copab 5167  ran crn 5652
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2733  ax-sep 5249  ax-pr 5391
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-rab 3414  df-v 3453  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-nul 4280  df-if 4483  df-sn 4585  df-pr 4587  df-op 4591  df-br 5104  df-opab 5168  df-cnv 5659  df-dm 5661  df-rn 5662
This theorem is used by:  rnopabss  5937  rnopab3  5938  rnmpt  5939  mptpreima  6232  rnoprab  7517  pwfir  9292  marypha2lem4  9414  hartogslem1  9520  rnttrcl  9707  axdc2lem  10507  abrexdomjm  33085  abrexexd  33087  lsmsnorb  33928  satfrnmapom  36104  rnmptsn  38226  abrexdom  38632  rncnvepres  39209  dfsuccl2  39370  imaopab  43253  tfsconcatrn  44302  modelaxreplem3  45922
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