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| Mirrors > Home > HSE Home > Th. List > nmcoplb | Structured version Visualization version GIF version | ||
| Description: A lower bound for the norm of a continuous linear Hilbert space operator. Theorem 3.5(ii) of [Beran] p. 99. (Contributed by NM, 7-Feb-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| nmcoplb | ⊢ ((𝑇 ∈ LinOp ∧ 𝑇 ∈ ContOp ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elin 3901 | . . 3 ⊢ (𝑇 ∈ (LinOp ∩ ContOp) ↔ (𝑇 ∈ LinOp ∧ 𝑇 ∈ ContOp)) | |
| 2 | fveq1 6830 | . . . . . . . 8 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (𝑇‘𝐴) = (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴)) | |
| 3 | 2 | fveq2d 6835 | . . . . . . 7 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (normℎ‘(𝑇‘𝐴)) = (normℎ‘(if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴))) |
| 4 | fveq2 6831 | . . . . . . . 8 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (normop‘𝑇) = (normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)))) | |
| 5 | 4 | oveq1d 7375 | . . . . . . 7 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → ((normop‘𝑇) · (normℎ‘𝐴)) = ((normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))) · (normℎ‘𝐴))) |
| 6 | 3, 5 | breq12d 5088 | . . . . . 6 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → ((normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴)) ↔ (normℎ‘(if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴)) ≤ ((normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))) · (normℎ‘𝐴)))) |
| 7 | 6 | imbi2d 342 | . . . . 5 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → ((𝐴 ∈ ℋ → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) ↔ (𝐴 ∈ ℋ → (normℎ‘(if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴)) ≤ ((normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))) · (normℎ‘𝐴))))) |
| 8 | idlnop 32085 | . . . . . . . . . 10 ⊢ ( I ↾ ℋ) ∈ LinOp | |
| 9 | idcnop 32074 | . . . . . . . . . 10 ⊢ ( I ↾ ℋ) ∈ ContOp | |
| 10 | elin 3901 | . . . . . . . . . 10 ⊢ (( I ↾ ℋ) ∈ (LinOp ∩ ContOp) ↔ (( I ↾ ℋ) ∈ LinOp ∧ ( I ↾ ℋ) ∈ ContOp)) | |
| 11 | 8, 9, 10 | mpbir2an 718 | . . . . . . . . 9 ⊢ ( I ↾ ℋ) ∈ (LinOp ∩ ContOp) |
| 12 | 11 | elimel 4527 | . . . . . . . 8 ⊢ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ (LinOp ∩ ContOp) |
| 13 | elin 3901 | . . . . . . . 8 ⊢ (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ (LinOp ∩ ContOp) ↔ (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ ContOp)) | |
| 14 | 12, 13 | mpbi 232 | . . . . . . 7 ⊢ (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ ContOp) |
| 15 | 14 | simpli 485 | . . . . . 6 ⊢ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ LinOp |
| 16 | 14 | simpri 487 | . . . . . 6 ⊢ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ ContOp |
| 17 | 15, 16 | nmcoplbi 32121 | . . . . 5 ⊢ (𝐴 ∈ ℋ → (normℎ‘(if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴)) ≤ ((normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))) · (normℎ‘𝐴))) |
| 18 | 7, 17 | dedth 4516 | . . . 4 ⊢ (𝑇 ∈ (LinOp ∩ ContOp) → (𝐴 ∈ ℋ → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴)))) |
| 19 | 18 | imp 408 | . . 3 ⊢ ((𝑇 ∈ (LinOp ∩ ContOp) ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| 20 | 1, 19 | sylanbr 589 | . 2 ⊢ (((𝑇 ∈ LinOp ∧ 𝑇 ∈ ContOp) ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| 21 | 20 | 3impa 1116 | 1 ⊢ ((𝑇 ∈ LinOp ∧ 𝑇 ∈ ContOp ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 397 ∧ w3a 1093 = wceq 1548 ∈ wcel 2121 ∩ cin 3884 ifcif 4457 class class class wbr 5075 I cid 5515 ↾ cres 5623 ‘cfv 6489 (class class class)co 7360 · cmul 11038 ≤ cle 11175 ℋchba 31012 normℎcno 31016 normopcnop 31038 ContOpccop 31039 LinOpclo 31040 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5202 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 ax-pre-sup 11111 ax-hilex 31092 ax-hfvadd 31093 ax-hvcom 31094 ax-hvass 31095 ax-hv0cl 31096 ax-hvaddid 31097 ax-hfvmul 31098 ax-hvmulid 31099 ax-hvmulass 31100 ax-hvdistr1 31101 ax-hvdistr2 31102 ax-hvmul0 31103 ax-hfi 31172 ax-his1 31175 ax-his2 31176 ax-his3 31177 ax-his4 31178 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-rmo 3346 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-1st 7935 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-map 8769 df-en 8888 df-dom 8889 df-sdom 8890 df-sup 9349 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-div 11803 df-nn 12170 df-2 12239 df-3 12240 df-4 12241 df-n0 12433 df-z 12520 df-uz 12784 df-rp 12938 df-seq 13959 df-exp 14019 df-cj 15056 df-re 15057 df-im 15058 df-sqrt 15192 df-abs 15193 df-grpo 30586 df-gid 30587 df-ablo 30638 df-vc 30652 df-nv 30685 df-va 30688 df-ba 30689 df-sm 30690 df-0v 30691 df-nmcv 30693 df-hnorm 31061 df-hba 31062 df-hvsub 31064 df-nmop 31932 df-cnop 31933 df-lnop 31934 df-unop 31936 |
| This theorem is referenced by: lnopconi 32127 |
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