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| Mirrors > Home > MPE Home > Th. List > Mathboxes > eqvreldisj4 | Structured version Visualization version GIF version | ||
| Description: Intersection with the converse epsilon relation restricted to the quotient set of an equivalence relation is disjoint. (Contributed by Peter Mazsa, 30-May-2020.) (Revised by Peter Mazsa, 31-Dec-2021.) |
| Ref | Expression |
|---|---|
| eqvreldisj4 | ⊢ ( EqvRel 𝑅 → Disj (𝑆 ∩ (◡ E ↾ (𝐵 / 𝑅)))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqvreldisj3 39578 | . 2 ⊢ ( EqvRel 𝑅 → Disj (◡ E ↾ (𝐵 / 𝑅))) | |
| 2 | disjimin 39500 | . 2 ⊢ ( Disj (◡ E ↾ (𝐵 / 𝑅)) → Disj (𝑆 ∩ (◡ E ↾ (𝐵 / 𝑅)))) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ ( EqvRel 𝑅 → Disj (𝑆 ∩ (◡ E ↾ (𝐵 / 𝑅)))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∩ cin 3904 E cep 5560 ◡ccnv 5660 ↾ cres 5663 / cqs 8689 EqvRel weqvrel 38849 Disj wdisjALTV 38868 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5257 ax-pr 5404 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-nf 1814 df-sb 2097 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rmo 3369 df-rab 3417 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4488 df-sn 4590 df-pr 4592 df-op 4596 df-br 5110 df-opab 5174 df-id 5556 df-eprel 5561 df-xp 5667 df-rel 5668 df-cnv 5669 df-co 5670 df-dm 5671 df-rn 5672 df-res 5673 df-ima 5674 df-ec 8692 df-qs 8696 df-coss 39150 df-refrel 39241 df-cnvrefrel 39256 df-symrel 39273 df-trrel 39307 df-eqvrel 39318 df-funALTV 39416 df-disjALTV 39439 df-eldisj 39441 |
| This theorem is referenced by: (None) |
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