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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 4141 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) | |
| 2 | incom 4109 | . 2 ⊢ (𝐶 ∩ 𝐴) = (𝐴 ∩ 𝐶) | |
| 3 | incom 4109 | . 2 ⊢ (𝐶 ∩ 𝐵) = (𝐵 ∩ 𝐶) | |
| 4 | 1, 2, 3 | 3sstr4g 3966 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐶 ∩ 𝐴) ⊆ (𝐶 ∩ 𝐵)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ⊆ wss 3900 ∩ cin 4092 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-tru 1573 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-in 4094 |
| This theorem is used by: ss2in 4144 inxpssres 5673 ssres2 6007 predrelss 6361 sbthlem7 9143 kmlem5 10263 canthnum 10764 ioodisj 13643 hashun3 14558 dprdres 20277 dprd2da 20291 dmdprdsplit2lem 20294 srhmsubc 20965 rhmsubclem3 20972 fldc 21074 fldhmsubc 21075 cnprest 23640 isnrm3 23710 regsep2 23727 llycmpkgen2 23902 kqdisj 24084 regr1lem 24091 fclsbas 24373 fclscf 24377 flimfnfcls 24380 isfcf 24386 metdstri 25204 nulmbl2 25890 uniioombllem4 25940 volsup2 25959 volcn 25960 itg1climres 26068 limcresi 26238 limciun 26247 rlimcnp2 27327 rplogsum 27887 chssoc 32131 cmbr4i 32236 5oai 32296 3oalem6 32302 mdslmd4i 32968 atcvat4i 33032 imadifxp 33270 swrdrndisj 33591 1arithufdlem4 34163 crefss 34564 pnfneige0 34666 cldbnd 37305 neibastop1 37338 neibastop2 37340 onint1 37428 oninhaus 37429 bj-idres 38286 cntotbnd 38933 polcon3N 41177 osumcllem4N 41219 lcfrlem2 42803 mapfzcons1 43932 coeq0i 43968 eldioph4b 44022 icccncfext 47112 rhmsubcALTVlem4 49596 srhmsubcALTV 49637 fldcALTV 49644 fldhmsubcALTV 49645 ssdisjdr 50134 sepnsepolem2 50252 |
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