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Mirrors > Home > MPE Home > Th. List > lssbn | Structured version Visualization version GIF version |
Description: A subspace of a Banach space is a Banach space iff it is closed. (Contributed by Mario Carneiro, 15-Oct-2015.) |
Ref | Expression |
---|---|
lssbn.x | ⊢ 𝑋 = (𝑊 ↾s 𝑈) |
lssbn.s | ⊢ 𝑆 = (LSubSp‘𝑊) |
lssbn.j | ⊢ 𝐽 = (TopOpen‘𝑊) |
Ref | Expression |
---|---|
lssbn | ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (𝑋 ∈ Ban ↔ 𝑈 ∈ (Clsd‘𝐽))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnnvc 23944 | . . . 4 ⊢ (𝑊 ∈ Ban → 𝑊 ∈ NrmVec) | |
2 | lssbn.x | . . . . 5 ⊢ 𝑋 = (𝑊 ↾s 𝑈) | |
3 | lssbn.s | . . . . 5 ⊢ 𝑆 = (LSubSp‘𝑊) | |
4 | 2, 3 | lssnvc 23308 | . . . 4 ⊢ ((𝑊 ∈ NrmVec ∧ 𝑈 ∈ 𝑆) → 𝑋 ∈ NrmVec) |
5 | 1, 4 | sylan 583 | . . 3 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → 𝑋 ∈ NrmVec) |
6 | eqid 2798 | . . . . . 6 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊) | |
7 | 2, 6 | resssca 16642 | . . . . 5 ⊢ (𝑈 ∈ 𝑆 → (Scalar‘𝑊) = (Scalar‘𝑋)) |
8 | 7 | adantl 485 | . . . 4 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (Scalar‘𝑊) = (Scalar‘𝑋)) |
9 | 6 | bnsca 23943 | . . . . 5 ⊢ (𝑊 ∈ Ban → (Scalar‘𝑊) ∈ CMetSp) |
10 | 9 | adantr 484 | . . . 4 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (Scalar‘𝑊) ∈ CMetSp) |
11 | 8, 10 | eqeltrrd 2891 | . . 3 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (Scalar‘𝑋) ∈ CMetSp) |
12 | eqid 2798 | . . . . . 6 ⊢ (Scalar‘𝑋) = (Scalar‘𝑋) | |
13 | 12 | isbn 23942 | . . . . 5 ⊢ (𝑋 ∈ Ban ↔ (𝑋 ∈ NrmVec ∧ 𝑋 ∈ CMetSp ∧ (Scalar‘𝑋) ∈ CMetSp)) |
14 | 3anan32 1094 | . . . . 5 ⊢ ((𝑋 ∈ NrmVec ∧ 𝑋 ∈ CMetSp ∧ (Scalar‘𝑋) ∈ CMetSp) ↔ ((𝑋 ∈ NrmVec ∧ (Scalar‘𝑋) ∈ CMetSp) ∧ 𝑋 ∈ CMetSp)) | |
15 | 13, 14 | bitri 278 | . . . 4 ⊢ (𝑋 ∈ Ban ↔ ((𝑋 ∈ NrmVec ∧ (Scalar‘𝑋) ∈ CMetSp) ∧ 𝑋 ∈ CMetSp)) |
16 | 15 | baib 539 | . . 3 ⊢ ((𝑋 ∈ NrmVec ∧ (Scalar‘𝑋) ∈ CMetSp) → (𝑋 ∈ Ban ↔ 𝑋 ∈ CMetSp)) |
17 | 5, 11, 16 | syl2anc 587 | . 2 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (𝑋 ∈ Ban ↔ 𝑋 ∈ CMetSp)) |
18 | bncms 23948 | . . 3 ⊢ (𝑊 ∈ Ban → 𝑊 ∈ CMetSp) | |
19 | eqid 2798 | . . . 4 ⊢ (Base‘𝑊) = (Base‘𝑊) | |
20 | 19, 3 | lssss 19701 | . . 3 ⊢ (𝑈 ∈ 𝑆 → 𝑈 ⊆ (Base‘𝑊)) |
21 | lssbn.j | . . . 4 ⊢ 𝐽 = (TopOpen‘𝑊) | |
22 | 2, 19, 21 | cmsss 23955 | . . 3 ⊢ ((𝑊 ∈ CMetSp ∧ 𝑈 ⊆ (Base‘𝑊)) → (𝑋 ∈ CMetSp ↔ 𝑈 ∈ (Clsd‘𝐽))) |
23 | 18, 20, 22 | syl2an 598 | . 2 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (𝑋 ∈ CMetSp ↔ 𝑈 ∈ (Clsd‘𝐽))) |
24 | 17, 23 | bitrd 282 | 1 ⊢ ((𝑊 ∈ Ban ∧ 𝑈 ∈ 𝑆) → (𝑋 ∈ Ban ↔ 𝑈 ∈ (Clsd‘𝐽))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∧ w3a 1084 = wceq 1538 ∈ wcel 2111 ⊆ wss 3881 ‘cfv 6324 (class class class)co 7135 Basecbs 16475 ↾s cress 16476 Scalarcsca 16560 TopOpenctopn 16687 LSubSpclss 19696 Clsdccld 21621 NrmVeccnvc 23188 CMetSpccms 23936 Bancbn 23937 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 ax-pre-sup 10604 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rmo 3114 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-iin 4884 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-oadd 8089 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-fi 8859 df-sup 8890 df-inf 8891 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-div 11287 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-z 11970 df-dec 12087 df-uz 12232 df-q 12337 df-rp 12378 df-xneg 12495 df-xadd 12496 df-xmul 12497 df-ico 12732 df-icc 12733 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-sca 16573 df-vsca 16574 df-tset 16576 df-ds 16579 df-rest 16688 df-topn 16689 df-0g 16707 df-topgen 16709 df-mgm 17844 df-sgrp 17893 df-mnd 17904 df-grp 18098 df-minusg 18099 df-sbg 18100 df-subg 18268 df-mgp 19233 df-ur 19245 df-ring 19292 df-lmod 19629 df-lss 19697 df-lvec 19868 df-psmet 20083 df-xmet 20084 df-met 20085 df-bl 20086 df-mopn 20087 df-fbas 20088 df-fg 20089 df-top 21499 df-topon 21516 df-topsp 21538 df-bases 21551 df-cld 21624 df-ntr 21625 df-cls 21626 df-nei 21703 df-haus 21920 df-fil 22451 df-flim 22544 df-xms 22927 df-ms 22928 df-nm 23189 df-ngp 23190 df-nlm 23193 df-nvc 23194 df-cfil 23859 df-cmet 23861 df-cms 23939 df-bn 23940 |
This theorem is referenced by: (None) |
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