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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 6828 | . . . . . . . 8 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (𝑇‘𝐴) = (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴)) | |
| 3 | 2 | fveq2d 6833 | . . . . . . 7 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (normℎ‘(𝑇‘𝐴)) = (normℎ‘(if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ))‘𝐴))) |
| 4 | fveq2 6829 | . . . . . . . 8 ⊢ (𝑇 = if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) → (normop‘𝑇) = (normop‘if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)))) | |
| 5 | 4 | oveq1d 7371 | . . . . . . 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 5087 | . . . . . 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 340 | . . . . 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 32051 | . . . . . . . . . 10 ⊢ ( I ↾ ℋ) ∈ LinOp | |
| 9 | idcnop 32040 | . . . . . . . . . 10 ⊢ ( I ↾ ℋ) ∈ ContOp | |
| 10 | elin 3901 | . . . . . . . . . 10 ⊢ (( I ↾ ℋ) ∈ (LinOp ∩ ContOp) ↔ (( I ↾ ℋ) ∈ LinOp ∧ ( I ↾ ℋ) ∈ ContOp)) | |
| 11 | 8, 9, 10 | mpbir2an 712 | . . . . . . . . 9 ⊢ ( I ↾ ℋ) ∈ (LinOp ∩ ContOp) |
| 12 | 11 | elimel 4526 | . . . . . . . 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 230 | . . . . . . 7 ⊢ (if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ LinOp ∧ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ ContOp) |
| 15 | 14 | simpli 483 | . . . . . 6 ⊢ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ LinOp |
| 16 | 14 | simpri 485 | . . . . . 6 ⊢ if(𝑇 ∈ (LinOp ∩ ContOp), 𝑇, ( I ↾ ℋ)) ∈ ContOp |
| 17 | 15, 16 | nmcoplbi 32087 | . . . . 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 4515 | . . . 4 ⊢ (𝑇 ∈ (LinOp ∩ ContOp) → (𝐴 ∈ ℋ → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴)))) |
| 19 | 18 | imp 406 | . . 3 ⊢ ((𝑇 ∈ (LinOp ∩ ContOp) ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| 20 | 1, 19 | sylanbr 583 | . 2 ⊢ (((𝑇 ∈ LinOp ∧ 𝑇 ∈ ContOp) ∧ 𝐴 ∈ ℋ) → (normℎ‘(𝑇‘𝐴)) ≤ ((normop‘𝑇) · (normℎ‘𝐴))) |
| 21 | 20 | 3impa 1110 | 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 395 ∧ w3a 1087 = wceq 1542 ∈ wcel 2114 ∩ cin 3884 ifcif 4456 class class class wbr 5074 I cid 5514 ↾ cres 5622 ‘cfv 6487 (class class class)co 7356 · cmul 11032 ≤ cle 11169 ℋchba 30978 normℎcno 30982 normopcnop 31004 ContOpccop 31005 LinOpclo 31006 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2184 ax-ext 2707 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 ax-cnex 11083 ax-resscn 11084 ax-1cn 11085 ax-icn 11086 ax-addcl 11087 ax-addrcl 11088 ax-mulcl 11089 ax-mulrcl 11090 ax-mulcom 11091 ax-addass 11092 ax-mulass 11093 ax-distr 11094 ax-i2m1 11095 ax-1ne0 11096 ax-1rid 11097 ax-rnegex 11098 ax-rrecex 11099 ax-cnre 11100 ax-pre-lttri 11101 ax-pre-lttrn 11102 ax-pre-ltadd 11103 ax-pre-mulgt0 11104 ax-pre-sup 11105 ax-hilex 31058 ax-hfvadd 31059 ax-hvcom 31060 ax-hvass 31061 ax-hv0cl 31062 ax-hvaddid 31063 ax-hfvmul 31064 ax-hvmulid 31065 ax-hvmulass 31066 ax-hvdistr1 31067 ax-hvdistr2 31068 ax-hvmul0 31069 ax-hfi 31138 ax-his1 31141 ax-his2 31142 ax-his3 31143 ax-his4 31144 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-tr 5182 df-id 5515 df-eprel 5520 df-po 5528 df-so 5529 df-fr 5573 df-we 5575 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-pred 6254 df-ord 6315 df-on 6316 df-lim 6317 df-suc 6318 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-1st 7931 df-2nd 7932 df-frecs 8220 df-wrecs 8251 df-recs 8300 df-rdg 8338 df-er 8632 df-map 8764 df-en 8883 df-dom 8884 df-sdom 8885 df-sup 9344 df-pnf 11170 df-mnf 11171 df-xr 11172 df-ltxr 11173 df-le 11174 df-sub 11368 df-neg 11369 df-div 11797 df-nn 12164 df-2 12233 df-3 12234 df-4 12235 df-n0 12427 df-z 12514 df-uz 12778 df-rp 12932 df-seq 13953 df-exp 14013 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-grpo 30552 df-gid 30553 df-ablo 30604 df-vc 30618 df-nv 30651 df-va 30654 df-ba 30655 df-sm 30656 df-0v 30657 df-nmcv 30659 df-hnorm 31027 df-hba 31028 df-hvsub 31030 df-nmop 31898 df-cnop 31899 df-lnop 31900 df-unop 31902 |
| This theorem is referenced by: lnopconi 32093 |
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