Theorem rnxrnres 38401

Description: Range of a range Cartesian product with a restricted relation. (Contributed by Peter Mazsa, 5-Dec-2021.)

Assertion

Ref	Expression
rnxrnres	⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}

Distinct variable groups:   𝑢,𝐴,𝑥,𝑦   𝑢,𝑅,𝑥,𝑦   𝑢,𝑆,𝑥,𝑦

Proof of Theorem rnxrnres

Step	Hyp	Ref	Expression
1		rnxrn 38400	. 2 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)}
2		brres 6003	. . . . . . . 8 ⊢ (𝑦 ∈ V → (𝑢(𝑆 ↾ 𝐴)𝑦 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
3	2	elv 3484	. . . . . . 7 ⊢ (𝑢(𝑆 ↾ 𝐴)𝑦 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦))
4	3	anbi2i 623	. . . . . 6 ⊢ ((𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ (𝑢𝑅𝑥 ∧ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
5		an12 645	. . . . . 6 ⊢ ((𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)) ↔ (𝑢𝑅𝑥 ∧ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
6	4, 5	bitr4i 278	. . . . 5 ⊢ ((𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ (𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
7	6	exbii 1847	. . . 4 ⊢ (∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ ∃𝑢(𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
8		df-rex 3070	. . . 4 ⊢ (∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦) ↔ ∃𝑢(𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
9	7, 8	bitr4i 278	. . 3 ⊢ (∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦))
10	9	opabbii 5209	. 2 ⊢ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)} = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}
11	1, 10	eqtri 2764	1 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}

Syntax hints:   ↔ wb 206   ∧ wa 395   = wceq 1539  ∃wex 1778   ∈ wcel 2107  ∃wrex 3069  Vcvv 3479   class class class wbr 5142  {copab 5204  ran crn 5685   ↾ cres 5686   ⋉ cxrn 38182

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1794  ax-4 1808  ax-5 1909  ax-6 1966  ax-7 2006  ax-8 2109  ax-9 2117  ax-10 2140  ax-11 2156  ax-12 2176  ax-ext 2707  ax-sep 5295  ax-nul 5305  ax-pr 5431  ax-un 7756

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1542  df-fal 1552  df-ex 1779  df-nf 1783  df-sb 2064  df-mo 2539  df-eu 2568  df-clab 2714  df-cleq 2728  df-clel 2815  df-nfc 2891  df-ne 2940  df-ral 3061  df-rex 3070  df-rab 3436  df-v 3481  df-dif 3953  df-un 3955  df-in 3957  df-ss 3967  df-nul 4333  df-if 4525  df-sn 4626  df-pr 4628  df-op 4632  df-uni 4907  df-br 5143  df-opab 5205  df-mpt 5225  df-id 5577  df-xp 5690  df-rel 5691  df-cnv 5692  df-co 5693  df-dm 5694  df-rn 5695  df-res 5696  df-ima 5697  df-iota 6513  df-fun 6562  df-fn 6563  df-f 6564  df-fo 6566  df-fv 6568  df-1st 8015  df-2nd 8016  df-ec 8748  df-xrn 38373

This theorem is referenced by:  rnxrncnvepres  38402  rnxrnidres  38403