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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 3800 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
2 | incom 3767 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
3 | incom 3767 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
4 | 1, 2, 3 | 3sstr4g 3609 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∩ cin 3539 ⊆ wss 3540 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-v 3175 df-in 3547 df-ss 3554 |
This theorem is referenced by: ss2in 3802 ssres2 5345 ssrnres 5491 sbthlem7 7961 kmlem5 8859 canthnum 9350 ioodisj 12173 hashun3 13034 xpsc0 16043 dprdres 18250 dprd2da 18264 dmdprdsplit2lem 18267 cnprest 20903 isnrm3 20973 regsep2 20990 llycmpkgen2 21163 kqdisj 21345 regr1lem 21352 fclsbas 21635 fclscf 21639 flimfnfcls 21642 isfcf 21648 metdstri 22462 nulmbl2 23111 uniioombllem4 23160 volsup2 23179 volcn 23180 itg1climres 23287 limcresi 23455 limciun 23464 rlimcnp2 24493 rplogsum 25016 chssoc 27739 cmbr4i 27844 5oai 27904 3oalem6 27910 mdslmd4i 28576 atcvat4i 28640 imadifxp 28796 crefss 29244 pnfneige0 29325 cldbnd 31491 neibastop1 31524 neibastop2 31526 onint1 31618 oninhaus 31619 cntotbnd 32765 polcon3N 34221 osumcllem4N 34263 lcfrlem2 35850 mapfzcons1 36298 coeq0i 36334 eldioph4b 36393 icccncfext 38773 srhmsubc 41868 fldc 41875 fldhmsubc 41876 rhmsubclem3 41880 srhmsubcALTV 41887 fldcALTV 41894 fldhmsubcALTV 41895 rhmsubcALTVlem4 41900 |
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