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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 4209 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
2 | incom 4177 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
3 | incom 4177 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
4 | 1, 2, 3 | 3sstr4g 4011 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∩ cin 3934 ⊆ wss 3935 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-rab 3147 df-v 3496 df-in 3942 df-ss 3951 |
This theorem is referenced by: ss2in 4212 inxpssres 5566 ssres2 5875 sbthlem7 8627 kmlem5 9574 canthnum 10065 ioodisj 12862 hashun3 13739 dprdres 19144 dprd2da 19158 dmdprdsplit2lem 19161 cnprest 21891 isnrm3 21961 regsep2 21978 llycmpkgen2 22152 kqdisj 22334 regr1lem 22341 fclsbas 22623 fclscf 22627 flimfnfcls 22630 isfcf 22636 metdstri 23453 nulmbl2 24131 uniioombllem4 24181 volsup2 24200 volcn 24201 itg1climres 24309 limcresi 24477 limciun 24486 rlimcnp2 25538 rplogsum 26097 chssoc 29267 cmbr4i 29372 5oai 29432 3oalem6 29438 mdslmd4i 30104 atcvat4i 30168 imadifxp 30345 swrdrndisj 30626 crefss 31108 pnfneige0 31189 cldbnd 33669 neibastop1 33702 neibastop2 33704 onint1 33792 oninhaus 33793 bj-idres 34446 cntotbnd 35068 polcon3N 37047 osumcllem4N 37089 lcfrlem2 38673 mapfzcons1 39307 coeq0i 39343 eldioph4b 39401 icccncfext 42163 srhmsubc 44341 fldc 44348 fldhmsubc 44349 rhmsubclem3 44353 srhmsubcALTV 44359 fldcALTV 44366 fldhmsubcALTV 44367 rhmsubcALTVlem4 44372 |
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