Theorem rnxrnres 38882

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 38881	. 2 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)}
2		brres 5968	. . . . . . . 8 ⊢ (𝑦 ∈ V → (𝑢(𝑆 ↾ 𝐴)𝑦 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
3	2	elv 3458	. . . . . . 7 ⊢ (𝑢(𝑆 ↾ 𝐴)𝑦 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦))
4	3	anbi2i 632	. . . . . 6 ⊢ ((𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ (𝑢𝑅𝑥 ∧ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
5		an12 655	. . . . . 6 ⊢ ((𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)) ↔ (𝑢𝑅𝑥 ∧ (𝑢 ∈ 𝐴 ∧ 𝑢𝑆𝑦)))
6	4, 5	bitr4i 280	. . . . 5 ⊢ ((𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ (𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
7	6	exbii 1867	. . . 4 ⊢ (∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ ∃𝑢(𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
8		df-rex 3086	. . . 4 ⊢ (∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦) ↔ ∃𝑢(𝑢 ∈ 𝐴 ∧ (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)))
9	7, 8	bitr4i 280	. . 3 ⊢ (∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦) ↔ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦))
10	9	opabbii 5164	. 2 ⊢ {⟨𝑥, 𝑦⟩ ∣ ∃𝑢(𝑢𝑅𝑥 ∧ 𝑢(𝑆 ↾ 𝐴)𝑦)} = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}
11	1, 10	eqtri 2784	1 ⊢ ran (𝑅 ⋉ (𝑆 ↾ 𝐴)) = {⟨𝑥, 𝑦⟩ ∣ ∃𝑢 ∈ 𝐴 (𝑢𝑅𝑥 ∧ 𝑢𝑆𝑦)}

Syntax hints:   ↔ wb 208   ∧ wa 399   = wceq 1559  ∃wex 1798   ∈ wcel 2141  ∃wrex 3085  Vcvv 3453   class class class wbr 5097  {copab 5159  ran crn 5644   ↾ cres 5645   ⋉ cxrn 38634

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-sep 5243  ax-nul 5253  ax-pr 5387  ax-un 7713

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-rab 3414  df-v 3455  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4284  df-if 4478  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4863  df-br 5098  df-opab 5160  df-mpt 5179  df-id 5538  df-xp 5649  df-rel 5650  df-cnv 5651  df-co 5652  df-dm 5653  df-rn 5654  df-res 5655  df-ima 5656  df-iota 6472  df-fun 6518  df-fn 6519  df-f 6520  df-fo 6522  df-fv 6524  df-1st 7965  df-2nd 7966  df-ec 8674  df-xrn 38840

This theorem is referenced by:  rnxrncnvepres  38883  rnxrnidres  38884