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Mirrors > Home > MPE Home > Th. List > ssrin | Structured version Visualization version GIF version |
Description: Add right intersection to subclass relation. (Contributed by NM, 16-Aug-1994.) (Proof shortened by Andrew Salmon, 26-Jun-2011.) |
Ref | Expression |
---|---|
ssrin | ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ssel 3738 | . . . 4 ⊢ (𝐴 ⊆ 𝐵 → (𝑥 ∈ 𝐴 → 𝑥 ∈ 𝐵)) | |
2 | 1 | anim1d 589 | . . 3 ⊢ (𝐴 ⊆ 𝐵 → ((𝑥 ∈ 𝐴 ∧ 𝑥 ∈ 𝐶) → (𝑥 ∈ 𝐵 ∧ 𝑥 ∈ 𝐶))) |
3 | elin 3939 | . . 3 ⊢ (𝑥 ∈ (𝐴 ∩ 𝐶) ↔ (𝑥 ∈ 𝐴 ∧ 𝑥 ∈ 𝐶)) | |
4 | elin 3939 | . . 3 ⊢ (𝑥 ∈ (𝐵 ∩ 𝐶) ↔ (𝑥 ∈ 𝐵 ∧ 𝑥 ∈ 𝐶)) | |
5 | 2, 3, 4 | 3imtr4g 285 | . 2 ⊢ (𝐴 ⊆ 𝐵 → (𝑥 ∈ (𝐴 ∩ 𝐶) → 𝑥 ∈ (𝐵 ∩ 𝐶))) |
6 | 5 | ssrdv 3750 | 1 ⊢ (𝐴 ⊆ 𝐵 → (𝐴 ∩ 𝐶) ⊆ (𝐵 ∩ 𝐶)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 ∈ wcel 2139 ∩ cin 3714 ⊆ wss 3715 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1871 ax-4 1886 ax-5 1988 ax-6 2054 ax-7 2090 ax-9 2148 ax-10 2168 ax-11 2183 ax-12 2196 ax-13 2391 ax-ext 2740 |
This theorem depends on definitions: df-bi 197 df-or 384 df-an 385 df-tru 1635 df-ex 1854 df-nf 1859 df-sb 2047 df-clab 2747 df-cleq 2753 df-clel 2756 df-nfc 2891 df-v 3342 df-in 3722 df-ss 3729 |
This theorem is referenced by: sslin 3982 ss2in 3983 ssdisj 4170 ssdisjOLD 4171 ssdifin0 4194 ssres 5582 predpredss 5847 sbthlem7 8241 onsdominel 8274 phplem2 8305 infdifsn 8727 fictb 9259 fin23lem23 9340 ttukeylem2 9524 limsupgord 14402 xpsc1 16423 isacs1i 16519 rescabs 16694 lsmdisj 18294 dmdprdsplit2lem 18644 pjfval 20252 pjpm 20254 obselocv 20274 tgss 20974 neindisj2 21129 restbas 21164 neitr 21186 restcls 21187 restntr 21188 nrmsep 21363 1stcrest 21458 cldllycmp 21500 kgencn3 21563 trfbas2 21848 fclsneii 22022 fclsrest 22029 fcfnei 22040 cnextcn 22072 tsmsres 22148 trust 22234 restutopopn 22243 trcfilu 22299 metrest 22530 reperflem 22822 metdseq0 22858 iundisj2 23517 uniioombllem3 23553 ellimc3 23842 limcflf 23844 lhop1lem 23975 ppisval 25029 ppisval2 25030 ppinprm 25077 chtnprm 25079 chtwordi 25081 ppiwordi 25087 chpub 25144 chebbnd1lem1 25357 chtppilimlem1 25361 orthin 28614 3oalem6 28835 mdbr2 29464 mdslle1i 29485 mdslle2i 29486 mdslj1i 29487 mdslj2i 29488 mdsl2i 29490 mdslmd1lem1 29493 mdslmd1lem2 29494 mdslmd3i 29500 mdexchi 29503 sumdmdlem 29586 iundisj2f 29710 iundisj2fi 29865 esumrnmpt2 30439 eulerpartlemn 30752 bnj1177 31381 poimirlem3 33725 poimirlem29 33751 ismblfin 33763 sstotbnd2 33886 lcvexchlem5 34828 pnonsingN 35722 dochnoncon 37182 eldioph2lem2 37826 acsfn1p 38271 ssrind 39832 nnuzdisj 40069 sumnnodd 40365 limsupres 40440 liminfgord 40489 sge0less 41112 rhmsscrnghm 42536 rngcresringcat 42540 |
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