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Theorem disjxrnres5 39699
Description: Disjoint range Cartesian product. (Contributed by Peter Mazsa, 25-Aug-2023.)
Assertion
Ref Expression
disjxrnres5 ( Disj (𝑅 ⋉ (𝑆 ↾ 𝐴)) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅))
Distinct variable groups:   𝑢,𝐴,𝑣   𝑢,𝑅,𝑣   𝑢,𝑆,𝑣

Proof of Theorem disjxrnres5
StepHypRef Expression
1 xrnres2 39278 . . 3 ((𝑅 ⋉ 𝑆) ↾ 𝐴) = (𝑅 ⋉ (𝑆 ↾ 𝐴))
21disjeqi 39687 . 2 ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ Disj (𝑅 ⋉ (𝑆 ↾ 𝐴)))
3 xrnrel 39234 . . 3 Rel (𝑅 ⋉ 𝑆)
4 disjres 39696 . . 3 (Rel (𝑅 ⋉ 𝑆) → ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅)))
53, 4ax-mp 5 . 2 ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅))
62, 5bitr3i 280 1 ( Disj (𝑅 ⋉ (𝑆 ↾ 𝐴)) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   ↔ wb 209   ∨ wo 861   = wceq 1570  ∀wral 3076   ∩ cin 3897  ∅c0 4278   ↾ cres 5649  Rel wrel 5652  [cec 8693   ⋉ cxrn 39026   Disj wdisjALTV 39071
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2147  ax-9 2155  ax-10 2178  ax-11 2194  ax-12 2213  ax-ext 2732  ax-sep 5248  ax-pr 5390
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ral 3077  df-rex 3087  df-rmo 3365  df-rab 3413  df-v 3452  df-dif 3901  df-un 3903  df-in 3905  df-ss 3915  df-nul 4279  df-if 4482  df-sn 4584  df-pr 4586  df-op 4590  df-br 5103  df-opab 5167  df-id 5542  df-xp 5653  df-rel 5654  df-cnv 5655  df-co 5656  df-dm 5657  df-rn 5658  df-res 5659  df-ima 5660  df-ec 8697  df-xrn 39232  df-coss 39353  df-cnvrefrel 39459  df-funALTV 39619  df-disjALTV 39642
This theorem is used by:  disjsuc  39711
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