Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > bnsscmcl | Structured version Visualization version GIF version |
Description: A subspace of a Banach space is a Banach space iff it is closed in the norm-induced metric of the parent space. (Contributed by NM, 1-Feb-2008.) (New usage is discouraged.) |
Ref | Expression |
---|---|
bnsscmcl.x | ⊢ 𝑋 = (BaseSet‘𝑈) |
bnsscmcl.d | ⊢ 𝐷 = (IndMet‘𝑈) |
bnsscmcl.j | ⊢ 𝐽 = (MetOpen‘𝐷) |
bnsscmcl.h | ⊢ 𝐻 = (SubSp‘𝑈) |
bnsscmcl.y | ⊢ 𝑌 = (BaseSet‘𝑊) |
Ref | Expression |
---|---|
bnsscmcl | ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → (𝑊 ∈ CBan ↔ 𝑌 ∈ (Clsd‘𝐽))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | bnnv 27106 | . . . 4 ⊢ (𝑈 ∈ CBan → 𝑈 ∈ NrmCVec) | |
2 | bnsscmcl.h | . . . . 5 ⊢ 𝐻 = (SubSp‘𝑈) | |
3 | 2 | sspnv 26965 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → 𝑊 ∈ NrmCVec) |
4 | 1, 3 | sylan 487 | . . 3 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → 𝑊 ∈ NrmCVec) |
5 | bnsscmcl.y | . . . . 5 ⊢ 𝑌 = (BaseSet‘𝑊) | |
6 | eqid 2610 | . . . . 5 ⊢ (IndMet‘𝑊) = (IndMet‘𝑊) | |
7 | 5, 6 | iscbn 27104 | . . . 4 ⊢ (𝑊 ∈ CBan ↔ (𝑊 ∈ NrmCVec ∧ (IndMet‘𝑊) ∈ (CMet‘𝑌))) |
8 | 7 | baib 942 | . . 3 ⊢ (𝑊 ∈ NrmCVec → (𝑊 ∈ CBan ↔ (IndMet‘𝑊) ∈ (CMet‘𝑌))) |
9 | 4, 8 | syl 17 | . 2 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → (𝑊 ∈ CBan ↔ (IndMet‘𝑊) ∈ (CMet‘𝑌))) |
10 | bnsscmcl.d | . . . . 5 ⊢ 𝐷 = (IndMet‘𝑈) | |
11 | 5, 10, 6, 2 | sspims 26978 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝑊 ∈ 𝐻) → (IndMet‘𝑊) = (𝐷 ↾ (𝑌 × 𝑌))) |
12 | 1, 11 | sylan 487 | . . 3 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → (IndMet‘𝑊) = (𝐷 ↾ (𝑌 × 𝑌))) |
13 | 12 | eleq1d 2672 | . 2 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → ((IndMet‘𝑊) ∈ (CMet‘𝑌) ↔ (𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌))) |
14 | bnsscmcl.x | . . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈) | |
15 | 14, 10 | cbncms 27105 | . . . 4 ⊢ (𝑈 ∈ CBan → 𝐷 ∈ (CMet‘𝑋)) |
16 | 15 | adantr 480 | . . 3 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → 𝐷 ∈ (CMet‘𝑋)) |
17 | bnsscmcl.j | . . . 4 ⊢ 𝐽 = (MetOpen‘𝐷) | |
18 | 17 | cmetss 22921 | . . 3 ⊢ (𝐷 ∈ (CMet‘𝑋) → ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌) ↔ 𝑌 ∈ (Clsd‘𝐽))) |
19 | 16, 18 | syl 17 | . 2 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → ((𝐷 ↾ (𝑌 × 𝑌)) ∈ (CMet‘𝑌) ↔ 𝑌 ∈ (Clsd‘𝐽))) |
20 | 9, 13, 19 | 3bitrd 293 | 1 ⊢ ((𝑈 ∈ CBan ∧ 𝑊 ∈ 𝐻) → (𝑊 ∈ CBan ↔ 𝑌 ∈ (Clsd‘𝐽))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 × cxp 5036 ↾ cres 5040 ‘cfv 5804 MetOpencmopn 19557 Clsdccld 20630 CMetcms 22860 NrmCVeccnv 26823 BaseSetcba 26825 IndMetcims 26830 SubSpcss 26960 CBanccbn 27102 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-iin 4458 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-om 6958 df-1st 7059 df-2nd 7060 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-oadd 7451 df-er 7629 df-map 7746 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-fi 8200 df-sup 8231 df-inf 8232 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-n0 11170 df-z 11255 df-uz 11564 df-q 11665 df-rp 11709 df-xneg 11822 df-xadd 11823 df-xmul 11824 df-ico 12052 df-icc 12053 df-rest 15906 df-topgen 15927 df-psmet 19559 df-xmet 19560 df-met 19561 df-bl 19562 df-mopn 19563 df-fbas 19564 df-fg 19565 df-top 20521 df-bases 20522 df-topon 20523 df-cld 20633 df-ntr 20634 df-cls 20635 df-nei 20712 df-haus 20929 df-fil 21460 df-flim 21553 df-cfil 22861 df-cmet 22863 df-grpo 26731 df-gid 26732 df-ginv 26733 df-gdiv 26734 df-ablo 26783 df-vc 26798 df-nv 26831 df-va 26834 df-ba 26835 df-sm 26836 df-0v 26837 df-vs 26838 df-nmcv 26839 df-ims 26840 df-ssp 26961 df-cbn 27103 |
This theorem is referenced by: (None) |
Copyright terms: Public domain | W3C validator |