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| Mirrors > Home > MPE Home > Th. List > ssind | Structured version Visualization version GIF version | ||
| Description: A deduction showing that a subclass of two classes is a subclass of their intersection. (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) |
| Ref | Expression |
|---|---|
| ssind.1 | ⊢ (𝜑 → 𝐴 ⊆ 𝐵) |
| ssind.2 | ⊢ (𝜑 → 𝐴 ⊆ 𝐶) |
| Ref | Expression |
|---|---|
| ssind | ⊢ (𝜑 → 𝐴 ⊆ (𝐵 ∩ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ssind.1 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ 𝐵) | |
| 2 | ssind.2 | . . 3 ⊢ (𝜑 → 𝐴 ⊆ 𝐶) | |
| 3 | 1, 2 | jca 511 | . 2 ⊢ (𝜑 → (𝐴 ⊆ 𝐵 ∧ 𝐴 ⊆ 𝐶)) |
| 4 | ssin 4180 | . 2 ⊢ ((𝐴 ⊆ 𝐵 ∧ 𝐴 ⊆ 𝐶) ↔ 𝐴 ⊆ (𝐵 ∩ 𝐶)) | |
| 5 | 3, 4 | sylib 218 | 1 ⊢ (𝜑 → 𝐴 ⊆ (𝐵 ∩ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 ∩ cin 3889 ⊆ wss 3890 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-v 3432 df-in 3897 df-ss 3907 |
| This theorem is referenced by: frrlem12 8240 frrlem13 8241 mreexexlem3d 17603 isacs1i 17614 rescabs 17791 funcres2c 17861 lsmmod 19641 gsumzres 19875 gsumzsubmcl 19884 gsum2d 19938 issubdrg 20748 lspdisj 21115 mplind 22058 ntrin 23036 elcls 23048 neitr 23155 restcls 23156 lmss 23273 xkoinjcn 23662 trfg 23866 trust 24204 utoptop 24209 restutop 24212 isngp2 24572 lebnumii 24943 causs 25275 dvreslem 25886 c1lip3 25976 ssjo 31533 dmdbr5 32394 mdslj2i 32406 mdsl2bi 32409 mdslmd1lem2 32412 mdsymlem5 32493 difininv 32602 idlsrgmulrssin 33588 bnj1286 35177 mclsind 35768 neiin 36530 topmeet 36562 fnemeet2 36565 bj-elpwg 37375 bj-restpw 37420 bj-restb 37422 bj-restuni2 37426 idresssidinxp 38649 pmod1i 40308 dihmeetlem1N 41750 dihglblem5apreN 41751 dochdmj1 41850 mapdin 42122 baerlem3lem2 42170 baerlem5alem2 42171 baerlem5blem2 42172 trrelind 44110 isotone2 44494 nzin 44763 inmap 45656 islptre 46067 limccog 46068 limcresiooub 46088 limcresioolb 46089 limsupresxr 46212 liminfresxr 46213 liminfvalxr 46229 fourierdlem48 46600 fourierdlem49 46601 fourierdlem113 46665 pimiooltgt 47156 pimdecfgtioc 47161 pimincfltioc 47162 pimdecfgtioo 47163 pimincfltioo 47164 sssmf 47184 smflimlem2 47218 smfsuplem1 47257 iscnrm3llem2 49437 setrec2fun 50179 |
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