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Theorem disjxrnres5 39017
Description: Disjoint range Cartesian product. (Contributed by Peter Mazsa, 25-Aug-2023.)
Assertion
Ref Expression
disjxrnres5 ( Disj (𝑅 ⋉ (𝑆𝐴)) ↔ ∀𝑢𝐴𝑣𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅𝑆) ∩ [𝑣](𝑅𝑆)) = ∅))
Distinct variable groups:   𝑢,𝐴,𝑣   𝑢,𝑅,𝑣   𝑢,𝑆,𝑣

Proof of Theorem disjxrnres5
StepHypRef Expression
1 xrnres2 38596 . . 3 ((𝑅𝑆) ↾ 𝐴) = (𝑅 ⋉ (𝑆𝐴))
21disjeqi 39005 . 2 ( Disj ((𝑅𝑆) ↾ 𝐴) ↔ Disj (𝑅 ⋉ (𝑆𝐴)))
3 xrnrel 38552 . . 3 Rel (𝑅𝑆)
4 disjres 39014 . . 3 (Rel (𝑅𝑆) → ( Disj ((𝑅𝑆) ↾ 𝐴) ↔ ∀𝑢𝐴𝑣𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅𝑆) ∩ [𝑣](𝑅𝑆)) = ∅)))
53, 4ax-mp 5 . 2 ( Disj ((𝑅𝑆) ↾ 𝐴) ↔ ∀𝑢𝐴𝑣𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅𝑆) ∩ [𝑣](𝑅𝑆)) = ∅))
62, 5bitr3i 277 1 ( Disj (𝑅 ⋉ (𝑆𝐴)) ↔ ∀𝑢𝐴𝑣𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅𝑆) ∩ [𝑣](𝑅𝑆)) = ∅))
Colors of variables: wff setvar class
Syntax hints:  wb 206  wo 848   = wceq 1542  wral 3050  cin 3899  c0 4284  cres 5625  Rel wrel 5628  [cec 8633  cxrn 38344   Disj wdisjALTV 38389
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2183  ax-ext 2707  ax-sep 5240  ax-nul 5250  ax-pr 5376
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2538  df-eu 2568  df-clab 2714  df-cleq 2727  df-clel 2810  df-nfc 2884  df-ral 3051  df-rex 3060  df-rmo 3349  df-rab 3399  df-v 3441  df-dif 3903  df-un 3905  df-in 3907  df-ss 3917  df-nul 4285  df-if 4479  df-sn 4580  df-pr 4582  df-op 4586  df-br 5098  df-opab 5160  df-id 5518  df-xp 5629  df-rel 5630  df-cnv 5631  df-co 5632  df-dm 5633  df-rn 5634  df-res 5635  df-ima 5636  df-ec 8637  df-xrn 38550  df-coss 38671  df-cnvrefrel 38777  df-funALTV 38937  df-disjALTV 38960
This theorem is referenced by:  disjsuc  39029
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