Theorem rnxrnres 38519

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 38518	. 2 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)}
2		brres 5942	. . . . . . . 8 ⊢ (𝑦 ∈ V → (𝑢(𝑆 ↾ 𝐴)𝑦 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
3	2	elv 3442	. . . . . . 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 1849	. . . 4 ⊢ (∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ ∃𝑢(𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
8		df-rex 3058	. . . 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 5162	. 2 ⊢ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)} = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}
11	1, 10	eqtri 2756	1 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}

Syntax hints:   ↔ wb 206   ∧ wa 395   = wceq 1541  ∃wex 1780   ∈ wcel 2113  ∃wrex 3057  Vcvv 3437   class class class wbr 5095  {copab 5157  ran crn 5622   ↾ cres 5623   ⋉ cxrn 38287

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2705  ax-sep 5238  ax-nul 5248  ax-pr 5374  ax-un 7677

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2566  df-clab 2712  df-cleq 2725  df-clel 2808  df-nfc 2882  df-ne 2930  df-ral 3049  df-rex 3058  df-rab 3397  df-v 3439  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4283  df-if 4477  df-sn 4578  df-pr 4580  df-op 4584  df-uni 4861  df-br 5096  df-opab 5158  df-mpt 5177  df-id 5516  df-xp 5627  df-rel 5628  df-cnv 5629  df-co 5630  df-dm 5631  df-rn 5632  df-res 5633  df-ima 5634  df-iota 6445  df-fun 6491  df-fn 6492  df-f 6493  df-fo 6495  df-fv 6497  df-1st 7930  df-2nd 7931  df-ec 8633  df-xrn 38477

This theorem is referenced by:  rnxrncnvepres  38520  rnxrnidres  38521