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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 4197 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
| 2 | incom 4165 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
| 3 | incom 4165 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
| 4 | 1, 2, 3 | 3sstr4g 3993 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∩ cin 3907 ⊆ wss 3908 |
| 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 2148 ax-9 2156 ax-ext 2738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-rab 3420 df-v 3460 df-in 3915 df-ss 3925 |
| This theorem is used by: ss2in 4200 inxpssres 5683 ssres2 6008 predrelss 6345 sbthlem7 9091 kmlem5 10157 canthnum 10652 ioodisj 13527 hashun3 14440 dprdres 20131 dprd2da 20145 dmdprdsplit2lem 20148 srhmsubc 20816 rhmsubclem3 20823 fldc 20924 fldhmsubc 20925 cnprest 23483 isnrm3 23553 regsep2 23570 llycmpkgen2 23744 kqdisj 23926 regr1lem 23933 fclsbas 24215 fclscf 24219 flimfnfcls 24222 isfcf 24228 metdstri 25046 nulmbl2 25732 uniioombllem4 25782 volsup2 25801 volcn 25802 itg1climres 25910 limcresi 26081 limciun 26090 rlimcnp2 27168 rplogsum 27728 chssoc 31885 cmbr4i 31990 5oai 32050 3oalem6 32056 mdslmd4i 32722 atcvat4i 32786 imadifxp 32983 swrdrndisj 33308 1arithufdlem4 33868 crefss 34270 pnfneige0 34372 cldbnd 36878 neibastop1 36911 neibastop2 36913 onint1 37001 oninhaus 37002 bj-idres 37845 cntotbnd 38488 polcon3N 40732 osumcllem4N 40774 lcfrlem2 42358 mapfzcons1 43489 coeq0i 43525 eldioph4b 43579 icccncfext 46642 rhmsubcALTVlem4 49090 srhmsubcALTV 49131 fldcALTV 49138 fldhmsubcALTV 49139 ssdisjdr 49628 sepnsepolem2 49742 |
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