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Mirrors > Home > MPE Home > Th. List > Mathboxes > disjxrnres5 | Structured version Visualization version GIF version |
Description: Disjoint range Cartesian product. (Contributed by Peter Mazsa, 25-Aug-2023.) |
Ref | Expression |
---|---|
disjxrnres5 | ⊢ ( Disj (𝑅 ⋉ (𝑆 ↾ 𝐴)) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | xrnres2 38397 | . . 3 ⊢ ((𝑅 ⋉ 𝑆) ↾ 𝐴) = (𝑅 ⋉ (𝑆 ↾ 𝐴)) | |
2 | 1 | disjeqi 38729 | . 2 ⊢ ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ Disj (𝑅 ⋉ (𝑆 ↾ 𝐴))) |
3 | xrnrel 38367 | . . 3 ⊢ Rel (𝑅 ⋉ 𝑆) | |
4 | disjres 38738 | . . 3 ⊢ (Rel (𝑅 ⋉ 𝑆) → ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅))) | |
5 | 3, 4 | ax-mp 5 | . 2 ⊢ ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅)) |
6 | 2, 5 | bitr3i 277 | 1 ⊢ ( Disj (𝑅 ⋉ (𝑆 ↾ 𝐴)) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢](𝑅 ⋉ 𝑆) ∩ [𝑣](𝑅 ⋉ 𝑆)) = ∅)) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 206 ∨ wo 847 = wceq 1538 ∀wral 3060 ∩ cin 3963 ∅c0 4340 ↾ cres 5692 Rel wrel 5695 [cec 8748 ⋉ cxrn 38173 Disj wdisjALTV 38208 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 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 2707 ax-sep 5303 ax-nul 5313 ax-pr 5439 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1541 df-fal 1551 df-ex 1778 df-nf 1782 df-sb 2064 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2728 df-clel 2815 df-nfc 2891 df-ral 3061 df-rex 3070 df-rmo 3379 df-rab 3435 df-v 3481 df-dif 3967 df-un 3969 df-in 3971 df-ss 3981 df-nul 4341 df-if 4533 df-sn 4633 df-pr 4635 df-op 4639 df-br 5150 df-opab 5212 df-id 5584 df-xp 5696 df-rel 5697 df-cnv 5698 df-co 5699 df-dm 5700 df-rn 5701 df-res 5702 df-ima 5703 df-ec 8752 df-xrn 38365 df-coss 38405 df-cnvrefrel 38521 df-funALTV 38676 df-disjALTV 38699 |
This theorem is referenced by: disjsuc 38753 |
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