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Mirrors > Home > MPE Home > Th. List > Mathboxes > disjres | Structured version Visualization version GIF version |
Description: Disjoint restriction. (Contributed by Peter Mazsa, 25-Aug-2023.) |
Ref | Expression |
---|---|
disjres | ⊢ (Rel 𝑅 → ( Disj (𝑅 ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢]𝑅 ∩ [𝑣]𝑅) = ∅))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | relres 5932 | . . . 4 ⊢ Rel (𝑅 ↾ 𝐴) | |
2 | dfdisjALTV4 36930 | . . . 4 ⊢ ( Disj (𝑅 ↾ 𝐴) ↔ (∀𝑥∃*𝑢 𝑢(𝑅 ↾ 𝐴)𝑥 ∧ Rel (𝑅 ↾ 𝐴))) | |
3 | 1, 2 | mpbiran2 708 | . . 3 ⊢ ( Disj (𝑅 ↾ 𝐴) ↔ ∀𝑥∃*𝑢 𝑢(𝑅 ↾ 𝐴)𝑥) |
4 | brres 5910 | . . . . . . 7 ⊢ (𝑥 ∈ V → (𝑢(𝑅 ↾ 𝐴)𝑥 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑅𝑥))) | |
5 | 4 | elv 3443 | . . . . . 6 ⊢ (𝑢(𝑅 ↾ 𝐴)𝑥 ↔ (𝑢 ∈ 𝐴 ∧ 𝑢𝑅𝑥)) |
6 | 5 | mobii 2546 | . . . . 5 ⊢ (∃*𝑢 𝑢(𝑅 ↾ 𝐴)𝑥 ↔ ∃*𝑢(𝑢 ∈ 𝐴 ∧ 𝑢𝑅𝑥)) |
7 | df-rmo 3331 | . . . . 5 ⊢ (∃*𝑢 ∈ 𝐴 𝑢𝑅𝑥 ↔ ∃*𝑢(𝑢 ∈ 𝐴 ∧ 𝑢𝑅𝑥)) | |
8 | 6, 7 | bitr4i 278 | . . . 4 ⊢ (∃*𝑢 𝑢(𝑅 ↾ 𝐴)𝑥 ↔ ∃*𝑢 ∈ 𝐴 𝑢𝑅𝑥) |
9 | 8 | albii 1819 | . . 3 ⊢ (∀𝑥∃*𝑢 𝑢(𝑅 ↾ 𝐴)𝑥 ↔ ∀𝑥∃*𝑢 ∈ 𝐴 𝑢𝑅𝑥) |
10 | 3, 9 | bitri 275 | . 2 ⊢ ( Disj (𝑅 ↾ 𝐴) ↔ ∀𝑥∃*𝑢 ∈ 𝐴 𝑢𝑅𝑥) |
11 | id 22 | . . 3 ⊢ (𝑢 = 𝑣 → 𝑢 = 𝑣) | |
12 | 11 | inecmo 36568 | . 2 ⊢ (Rel 𝑅 → (∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢]𝑅 ∩ [𝑣]𝑅) = ∅) ↔ ∀𝑥∃*𝑢 ∈ 𝐴 𝑢𝑅𝑥)) |
13 | 10, 12 | bitr4id 290 | 1 ⊢ (Rel 𝑅 → ( Disj (𝑅 ↾ 𝐴) ↔ ∀𝑢 ∈ 𝐴 ∀𝑣 ∈ 𝐴 (𝑢 = 𝑣 ∨ ([𝑢]𝑅 ∩ [𝑣]𝑅) = ∅))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∨ wo 845 ∀wal 1537 = wceq 1539 ∈ wcel 2104 ∃*wmo 2536 ∀wral 3061 ∃*wrmo 3329 Vcvv 3437 ∩ cin 3891 ∅c0 4262 class class class wbr 5081 ↾ cres 5602 Rel wrel 5605 [cec 8527 Disj wdisjALTV 36415 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pr 5361 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ral 3062 df-rex 3071 df-rmo 3331 df-rab 3333 df-v 3439 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-nul 4263 df-if 4466 df-sn 4566 df-pr 4568 df-op 4572 df-br 5082 df-opab 5144 df-id 5500 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-ec 8531 df-coss 36625 df-cnvrefrel 36741 df-disjALTV 36919 |
This theorem is referenced by: disjxrnres5 36961 |
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