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Theorem rnxrnres 38355
Description: Range of a range Cartesian product with a restricted relation. (Contributed by Peter Mazsa, 5-Dec-2021.)
Assertion
Ref Expression
rnxrnres ran (𝑅 ⋉ (𝑆𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝐴 (𝑢𝑅𝑥𝑢𝑆𝑦)}
Distinct variable groups:   𝑢,𝐴,𝑥,𝑦   𝑢,𝑅,𝑥,𝑦   𝑢,𝑆,𝑥,𝑦

Proof of Theorem rnxrnres
StepHypRef Expression
1 rnxrn 38354 . 2 ran (𝑅 ⋉ (𝑆𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦)}
2 brres 6016 . . . . . . . 8 (𝑦 ∈ V → (𝑢(𝑆𝐴)𝑦 ↔ (𝑢𝐴𝑢𝑆𝑦)))
32elv 3493 . . . . . . 7 (𝑢(𝑆𝐴)𝑦 ↔ (𝑢𝐴𝑢𝑆𝑦))
43anbi2i 622 . . . . . 6 ((𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦) ↔ (𝑢𝑅𝑥 ∧ (𝑢𝐴𝑢𝑆𝑦)))
5 an12 644 . . . . . 6 ((𝑢𝐴 ∧ (𝑢𝑅𝑥𝑢𝑆𝑦)) ↔ (𝑢𝑅𝑥 ∧ (𝑢𝐴𝑢𝑆𝑦)))
64, 5bitr4i 278 . . . . 5 ((𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦) ↔ (𝑢𝐴 ∧ (𝑢𝑅𝑥𝑢𝑆𝑦)))
76exbii 1846 . . . 4 (∃𝑢(𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦) ↔ ∃𝑢(𝑢𝐴 ∧ (𝑢𝑅𝑥𝑢𝑆𝑦)))
8 df-rex 3077 . . . 4 (∃𝑢𝐴 (𝑢𝑅𝑥𝑢𝑆𝑦) ↔ ∃𝑢(𝑢𝐴 ∧ (𝑢𝑅𝑥𝑢𝑆𝑦)))
97, 8bitr4i 278 . . 3 (∃𝑢(𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦) ↔ ∃𝑢𝐴 (𝑢𝑅𝑥𝑢𝑆𝑦))
109opabbii 5233 . 2 {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥𝑢(𝑆𝐴)𝑦)} = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝐴 (𝑢𝑅𝑥𝑢𝑆𝑦)}
111, 10eqtri 2768 1 ran (𝑅 ⋉ (𝑆𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢𝐴 (𝑢𝑅𝑥𝑢𝑆𝑦)}
Colors of variables: wff setvar class
Syntax hints:  wb 206  wa 395   = wceq 1537  wex 1777  wcel 2108  wrex 3076  Vcvv 3488   class class class wbr 5166  {copab 5228  ran crn 5701  cres 5702  cxrn 38134
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  ax-un 7770
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-mo 2543  df-eu 2572  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-dif 3979  df-un 3981  df-in 3983  df-ss 3993  df-nul 4353  df-if 4549  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-opab 5229  df-mpt 5250  df-id 5593  df-xp 5706  df-rel 5707  df-cnv 5708  df-co 5709  df-dm 5710  df-rn 5711  df-res 5712  df-ima 5713  df-iota 6525  df-fun 6575  df-fn 6576  df-f 6577  df-fo 6579  df-fv 6581  df-1st 8030  df-2nd 8031  df-ec 8765  df-xrn 38327
This theorem is referenced by:  rnxrncnvepres  38356  rnxrnidres  38357
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