| Mathbox for Peter Mazsa |
< Previous
Next >
Nearby theorems |
||
| 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 39550 | . . 3 ⊢ ((𝑅 ⋉ 𝑆) ↾ 𝐴) = (𝑅 ⋉ (𝑆 ↾ 𝐴)) | |
| 2 | 1 | disjeqi 39959 | . 2 ⊢ ( Disj ((𝑅 ⋉ 𝑆) ↾ 𝐴) ↔ Disj (𝑅 ⋉ (𝑆 ↾ 𝐴))) |
| 3 | xrnrel 39506 | . . 3 ⊢ Rel (𝑅 ⋉ 𝑆) | |
| 4 | disjres 39968 | . . 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 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 3080 ∩ cin 4092 ∅c0 4281 ↾ cres 5657 Rel wrel 5660 [cec 8743 ⋉ cxrn 39298 Disj wdisjALTV 39343 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-pr 5395 |
| 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 2102 df-mo 2567 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ral 3081 df-rex 3091 df-rmo 3369 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-br 5107 df-opab 5171 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-ec 8747 df-xrn 39504 df-coss 39625 df-cnvrefrel 39731 df-funALTV 39891 df-disjALTV 39914 |
| This theorem is used by: disjsuc 39983 |
| Copyright terms: Public domain | W3C validator |