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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 4190 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
| 2 | incom 4158 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
| 3 | incom 4158 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
| 4 | 1, 2, 3 | 3sstr4g 3987 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∩ cin 3901 ⊆ wss 3902 |
| 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 2734 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2100 df-clab 2741 df-cleq 2754 df-clel 2837 df-rab 3415 df-v 3455 df-in 3909 df-ss 3919 |
| This theorem is used by: ss2in 4193 inxpssres 5676 ssres2 6001 predrelss 6339 sbthlem7 9095 kmlem5 10161 canthnum 10662 ioodisj 13539 hashun3 14452 dprdres 20163 dprd2da 20177 dmdprdsplit2lem 20180 srhmsubc 20848 rhmsubclem3 20855 fldc 20956 fldhmsubc 20957 cnprest 23520 isnrm3 23590 regsep2 23607 llycmpkgen2 23782 kqdisj 23964 regr1lem 23971 fclsbas 24253 fclscf 24257 flimfnfcls 24260 isfcf 24266 metdstri 25084 nulmbl2 25770 uniioombllem4 25820 volsup2 25839 volcn 25840 itg1climres 25948 limcresi 26119 limciun 26128 rlimcnp2 27211 rplogsum 27771 chssoc 31985 cmbr4i 32090 5oai 32150 3oalem6 32156 mdslmd4i 32822 atcvat4i 32886 imadifxp 33082 swrdrndisj 33405 1arithufdlem4 33965 crefss 34367 pnfneige0 34469 cldbnd 36953 neibastop1 36986 neibastop2 36988 onint1 37076 oninhaus 37077 bj-idres 37920 cntotbnd 38554 polcon3N 40798 osumcllem4N 40840 lcfrlem2 42424 mapfzcons1 43570 coeq0i 43606 eldioph4b 43660 icccncfext 46723 rhmsubcALTVlem4 49207 srhmsubcALTV 49248 fldcALTV 49255 fldhmsubcALTV 49256 ssdisjdr 49745 sepnsepolem2 49857 |
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