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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 39935 and petlem 39940 via disjdmqseq 39933. (Contributed by Peter Mazsa, 16-Sep-2021.) |
| Ref | Expression |
|---|---|
| disjdmqs | ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) = (dom ≀ 𝑅 / ≀ 𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | disjdmqsss 39930 | . 2 ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) ⊆ (dom ≀ 𝑅 / ≀ 𝑅)) | |
| 2 | disjdmqscossss 39931 | . 2 ⊢ ( Disj 𝑅 → (dom ≀ 𝑅 / ≀ 𝑅) ⊆ (dom 𝑅 / 𝑅)) | |
| 3 | 1, 2 | eqssd 3925 | 1 ⊢ ( Disj 𝑅 → (dom 𝑅 / 𝑅) = (dom ≀ 𝑅 / ≀ 𝑅)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1569 dom cdm 5650 / cqs 8719 ≀ ccoss 39208 Disj wdisjALTV 39244 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-pr 5390 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ral 3077 df-rex 3087 df-rmo 3365 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-br 5103 df-opab 5167 df-id 5545 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-ec 8722 df-qs 8726 df-coss 39526 df-cnvrefrel 39632 df-disjALTV 39815 |
| This theorem is used by: disjdmqseq 39933 disjimeldisjdmqs 39958 |
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