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Mirrors > Home > MPE Home > Th. List > islss4 | Structured version Visualization version GIF version |
Description: A linear subspace is a subgroup which respects scalar multiplication. (Contributed by Stefan O'Rear, 11-Dec-2014.) (Revised by Mario Carneiro, 19-Apr-2016.) |
Ref | Expression |
---|---|
islss4.f | ⊢ 𝐹 = (Scalar‘𝑊) |
islss4.b | ⊢ 𝐵 = (Base‘𝐹) |
islss4.v | ⊢ 𝑉 = (Base‘𝑊) |
islss4.t | ⊢ · = ( ·𝑠 ‘𝑊) |
islss4.s | ⊢ 𝑆 = (LSubSp‘𝑊) |
Ref | Expression |
---|---|
islss4 | ⊢ (𝑊 ∈ LMod → (𝑈 ∈ 𝑆 ↔ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | islss4.s | . . . 4 ⊢ 𝑆 = (LSubSp‘𝑊) | |
2 | 1 | lsssubg 20134 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆) → 𝑈 ∈ (SubGrp‘𝑊)) |
3 | islss4.f | . . . . 5 ⊢ 𝐹 = (Scalar‘𝑊) | |
4 | islss4.t | . . . . 5 ⊢ · = ( ·𝑠 ‘𝑊) | |
5 | islss4.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐹) | |
6 | 3, 4, 5, 1 | lssvscl 20132 | . . . 4 ⊢ (((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆) ∧ (𝑎 ∈ 𝐵 ∧ 𝑏 ∈ 𝑈)) → (𝑎 · 𝑏) ∈ 𝑈) |
7 | 6 | ralrimivva 3114 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆) → ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈) |
8 | 2, 7 | jca 511 | . 2 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ 𝑆) → (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈)) |
9 | islss4.v | . . . . 5 ⊢ 𝑉 = (Base‘𝑊) | |
10 | 9 | subgss 18671 | . . . 4 ⊢ (𝑈 ∈ (SubGrp‘𝑊) → 𝑈 ⊆ 𝑉) |
11 | 10 | ad2antrl 724 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈)) → 𝑈 ⊆ 𝑉) |
12 | eqid 2738 | . . . . . 6 ⊢ (0g‘𝑊) = (0g‘𝑊) | |
13 | 12 | subg0cl 18678 | . . . . 5 ⊢ (𝑈 ∈ (SubGrp‘𝑊) → (0g‘𝑊) ∈ 𝑈) |
14 | 13 | ne0d 4266 | . . . 4 ⊢ (𝑈 ∈ (SubGrp‘𝑊) → 𝑈 ≠ ∅) |
15 | 14 | ad2antrl 724 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈)) → 𝑈 ≠ ∅) |
16 | eqid 2738 | . . . . . . . . . 10 ⊢ (+g‘𝑊) = (+g‘𝑊) | |
17 | 16 | subgcl 18680 | . . . . . . . . 9 ⊢ ((𝑈 ∈ (SubGrp‘𝑊) ∧ (𝑎 · 𝑏) ∈ 𝑈 ∧ 𝑐 ∈ 𝑈) → ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈) |
18 | 17 | 3exp 1117 | . . . . . . . 8 ⊢ (𝑈 ∈ (SubGrp‘𝑊) → ((𝑎 · 𝑏) ∈ 𝑈 → (𝑐 ∈ 𝑈 → ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈))) |
19 | 18 | adantl 481 | . . . . . . 7 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ (SubGrp‘𝑊)) → ((𝑎 · 𝑏) ∈ 𝑈 → (𝑐 ∈ 𝑈 → ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈))) |
20 | 19 | ralrimdv 3111 | . . . . . 6 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ (SubGrp‘𝑊)) → ((𝑎 · 𝑏) ∈ 𝑈 → ∀𝑐 ∈ 𝑈 ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈)) |
21 | 20 | ralimdv 3103 | . . . . 5 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ (SubGrp‘𝑊)) → (∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈 → ∀𝑏 ∈ 𝑈 ∀𝑐 ∈ 𝑈 ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈)) |
22 | 21 | ralimdv 3103 | . . . 4 ⊢ ((𝑊 ∈ LMod ∧ 𝑈 ∈ (SubGrp‘𝑊)) → (∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈 → ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 ∀𝑐 ∈ 𝑈 ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈)) |
23 | 22 | impr 454 | . . 3 ⊢ ((𝑊 ∈ LMod ∧ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈)) → ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 ∀𝑐 ∈ 𝑈 ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈) |
24 | 3, 5, 9, 16, 4, 1 | islss 20111 | . . 3 ⊢ (𝑈 ∈ 𝑆 ↔ (𝑈 ⊆ 𝑉 ∧ 𝑈 ≠ ∅ ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 ∀𝑐 ∈ 𝑈 ((𝑎 · 𝑏)(+g‘𝑊)𝑐) ∈ 𝑈)) |
25 | 11, 15, 23, 24 | syl3anbrc 1341 | . 2 ⊢ ((𝑊 ∈ LMod ∧ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈)) → 𝑈 ∈ 𝑆) |
26 | 8, 25 | impbida 797 | 1 ⊢ (𝑊 ∈ LMod → (𝑈 ∈ 𝑆 ↔ (𝑈 ∈ (SubGrp‘𝑊) ∧ ∀𝑎 ∈ 𝐵 ∀𝑏 ∈ 𝑈 (𝑎 · 𝑏) ∈ 𝑈))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 ≠ wne 2942 ∀wral 3063 ⊆ wss 3883 ∅c0 4253 ‘cfv 6418 (class class class)co 7255 Basecbs 16840 +gcplusg 16888 Scalarcsca 16891 ·𝑠 cvsca 16892 0gc0g 17067 SubGrpcsubg 18664 LModclmod 20038 LSubSpclss 20108 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rmo 3071 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-sets 16793 df-slot 16811 df-ndx 16823 df-base 16841 df-ress 16868 df-plusg 16901 df-0g 17069 df-mgm 18241 df-sgrp 18290 df-mnd 18301 df-grp 18495 df-minusg 18496 df-sbg 18497 df-subg 18667 df-mgp 19636 df-ur 19653 df-ring 19700 df-lmod 20040 df-lss 20109 |
This theorem is referenced by: lssacs 20144 lmhmima 20224 lmhmpreima 20225 lmhmeql 20232 lsmcl 20260 dsmmlss 20861 issubassa2 21006 mplind 21188 mhplss 21255 fedgmullem2 31613 |
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