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| Mirrors > Home > MPE Home > Th. List > Mathboxes > disjdmqs | Structured version Visualization version GIF version | ||
| Description: If a relation is disjoint, its domain quotient is equal to the domain quotient of the cosets by it. Lemma for partim2 39666 and petlem 39671 via disjdmqseq 39664. (Contributed by Peter Mazsa, 16-Sep-2021.) |
| Ref | Expression |
|---|---|
| disjdmqs | ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) = (dom ≀ 𝑅 / ≀ 𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | disjdmqsss 39661 | . 2 ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) ⊆ (dom ≀ 𝑅 / ≀ 𝑅)) | |
| 2 | disjdmqscossss 39662 | . 2 ⊢ ( Disj 𝑅 → (dom ≀ 𝑅 / ≀ 𝑅) ⊆ (dom 𝑅 / 𝑅)) | |
| 3 | 1, 2 | eqssd 3951 | 1 ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) = (dom ≀ 𝑅 / ≀ 𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 dom cdm 5659 / cqs 8699 ≀ ccoss 38939 Disj wdisjALTV 38975 |
| 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 2215 ax-ext 2734 ax-sep 5255 ax-pr 5402 |
| 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 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ral 3079 df-rex 3089 df-rmo 3367 df-rab 3415 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-sn 4588 df-pr 4590 df-op 4594 df-br 5108 df-opab 5172 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-ec 8702 df-qs 8706 df-coss 39257 df-cnvrefrel 39363 df-disjALTV 39546 |
| This theorem is used by: disjdmqseq 39664 disjimeldisjdmqs 39689 |
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