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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 4138 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
| 2 | incom 4106 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
| 3 | incom 4106 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
| 4 | 1, 2, 3 | 3sstr4g 3961 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ⊆ wss 3895 ∩ cin 4089 |
| 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-ext 2732 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1572 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-rab 3413 df-v 3452 df-ss 3896 df-in 4091 |
| This theorem is used by: ss2in 4141 inxpssres 5667 ssres2 5994 predrelss 6340 sbthlem7 9115 kmlem5 10236 canthnum 10737 ioodisj 13616 hashun3 14531 dprdres 20249 dprd2da 20263 dmdprdsplit2lem 20266 srhmsubc 20937 rhmsubclem3 20944 fldc 21046 fldhmsubc 21047 cnprest 23612 isnrm3 23682 regsep2 23699 llycmpkgen2 23874 kqdisj 24056 regr1lem 24063 fclsbas 24345 fclscf 24349 flimfnfcls 24352 isfcf 24358 metdstri 25176 nulmbl2 25862 uniioombllem4 25912 volsup2 25931 volcn 25932 itg1climres 26040 limcresi 26210 limciun 26219 rlimcnp2 27299 rplogsum 27859 chssoc 32103 cmbr4i 32208 5oai 32268 3oalem6 32274 mdslmd4i 32940 atcvat4i 33004 imadifxp 33242 swrdrndisj 33564 1arithufdlem4 34125 crefss 34527 pnfneige0 34629 cldbnd 37206 neibastop1 37239 neibastop2 37241 onint1 37329 oninhaus 37330 bj-idres 38174 cntotbnd 38823 polcon3N 41067 osumcllem4N 41109 lcfrlem2 42693 mapfzcons1 43821 coeq0i 43857 eldioph4b 43911 icccncfext 46990 rhmsubcALTVlem4 49474 srhmsubcALTV 49515 fldcALTV 49522 fldhmsubcALTV 49523 ssdisjdr 50012 sepnsepolem2 50130 |
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