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| Mirrors > Home > MPE Home > Th. List > sslin | Structured version Visualization version GIF version | ||
| Description: Add left intersection to subclass relation. (Contributed by NM, 19-Oct-1999.) |
| Ref | Expression |
|---|---|
| sslin | ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssrin 4187 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
| 2 | incom 4155 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
| 3 | incom 4155 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
| 4 | 1, 2, 3 | 3sstr4g 3984 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∩ cin 3898 ⊆ wss 3899 |
| 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-ext 2733 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2740 df-cleq 2753 df-clel 2836 df-rab 3414 df-v 3453 df-in 3906 df-ss 3916 |
| This theorem is used by: ss2in 4190 inxpssres 5668 ssres2 5995 predrelss 6333 sbthlem7 9096 kmlem5 10214 canthnum 10715 ioodisj 13594 hashun3 14508 dprdres 20224 dprd2da 20238 dmdprdsplit2lem 20241 srhmsubc 20912 rhmsubclem3 20919 fldc 21021 fldhmsubc 21022 cnprest 23587 isnrm3 23657 regsep2 23674 llycmpkgen2 23849 kqdisj 24031 regr1lem 24038 fclsbas 24320 fclscf 24324 flimfnfcls 24327 isfcf 24333 metdstri 25151 nulmbl2 25837 uniioombllem4 25887 volsup2 25906 volcn 25907 itg1climres 26015 limcresi 26185 limciun 26194 rlimcnp2 27276 rplogsum 27836 chssoc 32080 cmbr4i 32185 5oai 32245 3oalem6 32251 mdslmd4i 32917 atcvat4i 32981 imadifxp 33177 swrdrndisj 33500 1arithufdlem4 34061 crefss 34463 pnfneige0 34565 cldbnd 37084 neibastop1 37117 neibastop2 37119 onint1 37207 oninhaus 37208 bj-idres 38049 cntotbnd 38698 polcon3N 40942 osumcllem4N 40984 lcfrlem2 42568 mapfzcons1 43681 coeq0i 43717 eldioph4b 43771 icccncfext 46841 rhmsubcALTVlem4 49325 srhmsubcALTV 49366 fldcALTV 49373 fldhmsubcALTV 49374 ssdisjdr 49863 sepnsepolem2 49975 |
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