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Mirrors > Home > MPE Home > Th. List > ipcau | Structured version Visualization version GIF version |
Description: The Cauchy-Schwarz inequality for a subcomplex pre-Hilbert space. Part of Lemma 3.2-1(a) of [Kreyszig] p. 137. This is Metamath 100 proof #78. (Contributed by NM, 12-Jan-2008.) (Revised by Mario Carneiro, 11-Oct-2015.) |
Ref | Expression |
---|---|
ipcau.v | ⊢ 𝑉 = (Base‘𝑊) |
ipcau.h | ⊢ , = (·𝑖‘𝑊) |
ipcau.n | ⊢ 𝑁 = (norm‘𝑊) |
Ref | Expression |
---|---|
ipcau | ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (abs‘(𝑋 , 𝑌)) ≤ ((𝑁‘𝑋) · (𝑁‘𝑌))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | eqid 2736 | . . 3 ⊢ (toℂPreHil‘𝑊) = (toℂPreHil‘𝑊) | |
2 | ipcau.v | . . 3 ⊢ 𝑉 = (Base‘𝑊) | |
3 | eqid 2736 | . . 3 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊) | |
4 | simp1 1138 | . . . 4 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 𝑊 ∈ ℂPreHil) | |
5 | cphphl 24022 | . . . 4 ⊢ (𝑊 ∈ ℂPreHil → 𝑊 ∈ PreHil) | |
6 | 4, 5 | syl 17 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 𝑊 ∈ PreHil) |
7 | eqid 2736 | . . . . 5 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊)) | |
8 | 3, 7 | cphsca 24030 | . . . 4 ⊢ (𝑊 ∈ ℂPreHil → (Scalar‘𝑊) = (ℂfld ↾s (Base‘(Scalar‘𝑊)))) |
9 | 4, 8 | syl 17 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (Scalar‘𝑊) = (ℂfld ↾s (Base‘(Scalar‘𝑊)))) |
10 | ipcau.h | . . 3 ⊢ , = (·𝑖‘𝑊) | |
11 | 3, 7 | cphsqrtcl 24035 | . . . 4 ⊢ ((𝑊 ∈ ℂPreHil ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑥 ∈ ℝ ∧ 0 ≤ 𝑥)) → (√‘𝑥) ∈ (Base‘(Scalar‘𝑊))) |
12 | 4, 11 | sylan 583 | . . 3 ⊢ (((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) ∧ (𝑥 ∈ (Base‘(Scalar‘𝑊)) ∧ 𝑥 ∈ ℝ ∧ 0 ≤ 𝑥)) → (√‘𝑥) ∈ (Base‘(Scalar‘𝑊))) |
13 | 2, 10 | ipge0 24049 | . . . 4 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑥 ∈ 𝑉) → 0 ≤ (𝑥 , 𝑥)) |
14 | 4, 13 | sylan 583 | . . 3 ⊢ (((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) ∧ 𝑥 ∈ 𝑉) → 0 ≤ (𝑥 , 𝑥)) |
15 | eqid 2736 | . . 3 ⊢ (norm‘(toℂPreHil‘𝑊)) = (norm‘(toℂPreHil‘𝑊)) | |
16 | eqid 2736 | . . 3 ⊢ ((𝑌 , 𝑋) / (𝑌 , 𝑌)) = ((𝑌 , 𝑋) / (𝑌 , 𝑌)) | |
17 | simp2 1139 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 𝑋 ∈ 𝑉) | |
18 | simp3 1140 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 𝑌 ∈ 𝑉) | |
19 | 1, 2, 3, 6, 9, 10, 12, 14, 7, 15, 16, 17, 18 | ipcau2 24085 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (abs‘(𝑋 , 𝑌)) ≤ (((norm‘(toℂPreHil‘𝑊))‘𝑋) · ((norm‘(toℂPreHil‘𝑊))‘𝑌))) |
20 | ipcau.n | . . . . . 6 ⊢ 𝑁 = (norm‘𝑊) | |
21 | 1, 20 | cphtcphnm 24081 | . . . . 5 ⊢ (𝑊 ∈ ℂPreHil → 𝑁 = (norm‘(toℂPreHil‘𝑊))) |
22 | 4, 21 | syl 17 | . . . 4 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → 𝑁 = (norm‘(toℂPreHil‘𝑊))) |
23 | 22 | fveq1d 6697 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝑁‘𝑋) = ((norm‘(toℂPreHil‘𝑊))‘𝑋)) |
24 | 22 | fveq1d 6697 | . . 3 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (𝑁‘𝑌) = ((norm‘(toℂPreHil‘𝑊))‘𝑌)) |
25 | 23, 24 | oveq12d 7209 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → ((𝑁‘𝑋) · (𝑁‘𝑌)) = (((norm‘(toℂPreHil‘𝑊))‘𝑋) · ((norm‘(toℂPreHil‘𝑊))‘𝑌))) |
26 | 19, 25 | breqtrrd 5067 | 1 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝑋 ∈ 𝑉 ∧ 𝑌 ∈ 𝑉) → (abs‘(𝑋 , 𝑌)) ≤ ((𝑁‘𝑋) · (𝑁‘𝑌))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1089 = wceq 1543 ∈ wcel 2112 class class class wbr 5039 ‘cfv 6358 (class class class)co 7191 ℝcr 10693 0cc0 10694 · cmul 10699 ≤ cle 10833 / cdiv 11454 √csqrt 14761 abscabs 14762 Basecbs 16666 ↾s cress 16667 Scalarcsca 16752 ·𝑖cip 16754 ℂfldccnfld 20317 PreHilcphl 20540 normcnm 23428 ℂPreHilccph 24017 toℂPreHilctcph 24018 |
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 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-rep 5164 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-cnex 10750 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-pre-mulgt0 10771 ax-pre-sup 10772 ax-addf 10773 ax-mulf 10774 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-reu 3058 df-rmo 3059 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-pss 3872 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-tp 4532 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-tr 5147 df-id 5440 df-eprel 5445 df-po 5453 df-so 5454 df-fr 5494 df-we 5496 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-pred 6140 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-riota 7148 df-ov 7194 df-oprab 7195 df-mpo 7196 df-om 7623 df-1st 7739 df-2nd 7740 df-tpos 7946 df-wrecs 8025 df-recs 8086 df-rdg 8124 df-1o 8180 df-er 8369 df-map 8488 df-en 8605 df-dom 8606 df-sdom 8607 df-fin 8608 df-sup 9036 df-inf 9037 df-pnf 10834 df-mnf 10835 df-xr 10836 df-ltxr 10837 df-le 10838 df-sub 11029 df-neg 11030 df-div 11455 df-nn 11796 df-2 11858 df-3 11859 df-4 11860 df-5 11861 df-6 11862 df-7 11863 df-8 11864 df-9 11865 df-n0 12056 df-z 12142 df-dec 12259 df-uz 12404 df-q 12510 df-rp 12552 df-xneg 12669 df-xadd 12670 df-xmul 12671 df-ico 12906 df-fz 13061 df-seq 13540 df-exp 13601 df-cj 14627 df-re 14628 df-im 14629 df-sqrt 14763 df-abs 14764 df-struct 16668 df-ndx 16669 df-slot 16670 df-base 16672 df-sets 16673 df-ress 16674 df-plusg 16762 df-mulr 16763 df-starv 16764 df-sca 16765 df-vsca 16766 df-ip 16767 df-tset 16768 df-ple 16769 df-ds 16771 df-unif 16772 df-0g 16900 df-topgen 16902 df-mgm 18068 df-sgrp 18117 df-mnd 18128 df-mhm 18172 df-grp 18322 df-minusg 18323 df-sbg 18324 df-subg 18494 df-ghm 18574 df-cmn 19126 df-abl 19127 df-mgp 19459 df-ur 19471 df-ring 19518 df-cring 19519 df-oppr 19595 df-dvdsr 19613 df-unit 19614 df-invr 19644 df-dvr 19655 df-rnghom 19689 df-drng 19723 df-subrg 19752 df-staf 19835 df-srng 19836 df-lmod 19855 df-lmhm 20013 df-lvec 20094 df-sra 20163 df-rgmod 20164 df-psmet 20309 df-xmet 20310 df-met 20311 df-bl 20312 df-mopn 20313 df-cnfld 20318 df-phl 20542 df-top 21745 df-topon 21762 df-topsp 21784 df-bases 21797 df-xms 23172 df-ms 23173 df-nm 23434 df-ngp 23435 df-tng 23436 df-nlm 23438 df-clm 23914 df-cph 24019 df-tcph 24020 |
This theorem is referenced by: ipcnlem2 24095 |
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