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Theorem br1cossxrncnvssrres 38468
Description: 𝐵, 𝐶 and 𝐷, 𝐸 are cosets by range Cartesian product with restricted converse subsets class: a binary relation. (Contributed by Peter Mazsa, 9-Jun-2021.)
Assertion
Ref Expression
br1cossxrncnvssrres (((𝐵𝑉𝐶𝑊) ∧ (𝐷𝑋𝐸𝑌)) → (⟨𝐵, 𝐶⟩ ≀ (𝑅 ⋉ ( S ↾ 𝐴))⟨𝐷, 𝐸⟩ ↔ ∃𝑢𝐴 ((𝐶𝑢𝑢𝑅𝐵) ∧ (𝐸𝑢𝑢𝑅𝐷))))
Distinct variable groups:   𝑢,𝐴   𝑢,𝐵   𝑢,𝐶   𝑢,𝐷   𝑢,𝐸   𝑢,𝑅   𝑢,𝑉   𝑢,𝑊   𝑢,𝑋   𝑢,𝑌

Proof of Theorem br1cossxrncnvssrres
StepHypRef Expression
1 br1cossxrnres 38408 . 2 (((𝐵𝑉𝐶𝑊) ∧ (𝐷𝑋𝐸𝑌)) → (⟨𝐵, 𝐶⟩ ≀ (𝑅 ⋉ ( S ↾ 𝐴))⟨𝐷, 𝐸⟩ ↔ ∃𝑢𝐴 ((𝑢 S 𝐶𝑢𝑅𝐵) ∧ (𝑢 S 𝐸𝑢𝑅𝐷))))
2 brcnvssr 38466 . . . . . 6 (𝑢 ∈ V → (𝑢 S 𝐶𝐶𝑢))
32elv 3468 . . . . 5 (𝑢 S 𝐶𝐶𝑢)
43anbi1i 624 . . . 4 ((𝑢 S 𝐶𝑢𝑅𝐵) ↔ (𝐶𝑢𝑢𝑅𝐵))
5 brcnvssr 38466 . . . . . 6 (𝑢 ∈ V → (𝑢 S 𝐸𝐸𝑢))
65elv 3468 . . . . 5 (𝑢 S 𝐸𝐸𝑢)
76anbi1i 624 . . . 4 ((𝑢 S 𝐸𝑢𝑅𝐷) ↔ (𝐸𝑢𝑢𝑅𝐷))
84, 7anbi12i 628 . . 3 (((𝑢 S 𝐶𝑢𝑅𝐵) ∧ (𝑢 S 𝐸𝑢𝑅𝐷)) ↔ ((𝐶𝑢𝑢𝑅𝐵) ∧ (𝐸𝑢𝑢𝑅𝐷)))
98rexbii 3082 . 2 (∃𝑢𝐴 ((𝑢 S 𝐶𝑢𝑅𝐵) ∧ (𝑢 S 𝐸𝑢𝑅𝐷)) ↔ ∃𝑢𝐴 ((𝐶𝑢𝑢𝑅𝐵) ∧ (𝐸𝑢𝑢𝑅𝐷)))
101, 9bitrdi 287 1 (((𝐵𝑉𝐶𝑊) ∧ (𝐷𝑋𝐸𝑌)) → (⟨𝐵, 𝐶⟩ ≀ (𝑅 ⋉ ( S ↾ 𝐴))⟨𝐷, 𝐸⟩ ↔ ∃𝑢𝐴 ((𝐶𝑢𝑢𝑅𝐵) ∧ (𝐸𝑢𝑢𝑅𝐷))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 206  wa 395  wcel 2107  wrex 3059  Vcvv 3463  wss 3931  cop 4612   class class class wbr 5123  ccnv 5664  cres 5667  cxrn 38140  ccoss 38141   S cssr 38144
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 2706  ax-sep 5276  ax-nul 5286  ax-pr 5412  ax-un 7737
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 2538  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2808  df-nfc 2884  df-ne 2932  df-ral 3051  df-rex 3060  df-rab 3420  df-v 3465  df-dif 3934  df-un 3936  df-in 3938  df-ss 3948  df-nul 4314  df-if 4506  df-sn 4607  df-pr 4609  df-op 4613  df-uni 4888  df-br 5124  df-opab 5186  df-mpt 5206  df-id 5558  df-xp 5671  df-rel 5672  df-cnv 5673  df-co 5674  df-dm 5675  df-rn 5676  df-res 5677  df-iota 6494  df-fun 6543  df-fn 6544  df-f 6545  df-fo 6547  df-fv 6549  df-1st 7996  df-2nd 7997  df-xrn 38331  df-coss 38371  df-ssr 38458
This theorem is referenced by: (None)
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