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Mirrors > Home > MPE Home > Th. List > nmpar | Structured version Visualization version GIF version |
Description: A subcomplex pre-Hilbert space satisfies the parallelogram law. (Contributed by Mario Carneiro, 7-Oct-2015.) |
Ref | Expression |
---|---|
nmpar.v | ⊢ 𝑉 = (Base‘𝑊) |
nmpar.p | ⊢ + = (+g‘𝑊) |
nmpar.m | ⊢ − = (-g‘𝑊) |
nmpar.n | ⊢ 𝑁 = (norm‘𝑊) |
Ref | Expression |
---|---|
nmpar | ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → (((𝑁‘(𝐴 + 𝐵))↑2) + ((𝑁‘(𝐴 − 𝐵))↑2)) = (2 · (((𝑁‘𝐴)↑2) + ((𝑁‘𝐵)↑2)))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nmpar.v | . 2 ⊢ 𝑉 = (Base‘𝑊) | |
2 | nmpar.p | . 2 ⊢ + = (+g‘𝑊) | |
3 | nmpar.m | . 2 ⊢ − = (-g‘𝑊) | |
4 | nmpar.n | . 2 ⊢ 𝑁 = (norm‘𝑊) | |
5 | eqid 2738 | . 2 ⊢ (·𝑖‘𝑊) = (·𝑖‘𝑊) | |
6 | eqid 2738 | . 2 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊) | |
7 | eqid 2738 | . 2 ⊢ (Base‘(Scalar‘𝑊)) = (Base‘(Scalar‘𝑊)) | |
8 | simp1 1137 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → 𝑊 ∈ ℂPreHil) | |
9 | simp2 1138 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → 𝐴 ∈ 𝑉) | |
10 | simp3 1139 | . 2 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → 𝐵 ∈ 𝑉) | |
11 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | nmparlem 24531 | 1 ⊢ ((𝑊 ∈ ℂPreHil ∧ 𝐴 ∈ 𝑉 ∧ 𝐵 ∈ 𝑉) → (((𝑁‘(𝐴 + 𝐵))↑2) + ((𝑁‘(𝐴 − 𝐵))↑2)) = (2 · (((𝑁‘𝐴)↑2) + ((𝑁‘𝐵)↑2)))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ‘cfv 6492 (class class class)co 7350 + caddc 10988 · cmul 10990 2c2 12142 ↑cexp 13897 Basecbs 17019 +gcplusg 17069 Scalarcsca 17072 ·𝑖cip 17074 -gcsg 18686 normcnm 23860 ℂPreHilccph 24458 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2709 ax-rep 5241 ax-sep 5255 ax-nul 5262 ax-pow 5319 ax-pr 5383 ax-un 7663 ax-cnex 11041 ax-resscn 11042 ax-1cn 11043 ax-icn 11044 ax-addcl 11045 ax-addrcl 11046 ax-mulcl 11047 ax-mulrcl 11048 ax-mulcom 11049 ax-addass 11050 ax-mulass 11051 ax-distr 11052 ax-i2m1 11053 ax-1ne0 11054 ax-1rid 11055 ax-rnegex 11056 ax-rrecex 11057 ax-cnre 11058 ax-pre-lttri 11059 ax-pre-lttrn 11060 ax-pre-ltadd 11061 ax-pre-mulgt0 11062 ax-pre-sup 11063 ax-addf 11064 ax-mulf 11065 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3064 df-rex 3073 df-rmo 3352 df-reu 3353 df-rab 3407 df-v 3446 df-sbc 3739 df-csb 3855 df-dif 3912 df-un 3914 df-in 3916 df-ss 3926 df-pss 3928 df-nul 4282 df-if 4486 df-pw 4561 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4865 df-iun 4955 df-br 5105 df-opab 5167 df-mpt 5188 df-tr 5222 df-id 5529 df-eprel 5535 df-po 5543 df-so 5544 df-fr 5586 df-we 5588 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6250 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6444 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7306 df-ov 7353 df-oprab 7354 df-mpo 7355 df-om 7794 df-1st 7912 df-2nd 7913 df-tpos 8125 df-frecs 8180 df-wrecs 8211 df-recs 8285 df-rdg 8324 df-1o 8380 df-er 8582 df-map 8701 df-en 8818 df-dom 8819 df-sdom 8820 df-fin 8821 df-sup 9312 df-pnf 11125 df-mnf 11126 df-xr 11127 df-ltxr 11128 df-le 11129 df-sub 11321 df-neg 11322 df-div 11747 df-nn 12088 df-2 12150 df-3 12151 df-4 12152 df-5 12153 df-6 12154 df-7 12155 df-8 12156 df-9 12157 df-n0 12348 df-z 12434 df-dec 12553 df-uz 12698 df-rp 12846 df-fz 13355 df-seq 13837 df-exp 13898 df-cj 14919 df-re 14920 df-im 14921 df-sqrt 15055 df-abs 15056 df-struct 16955 df-sets 16972 df-slot 16990 df-ndx 17002 df-base 17020 df-ress 17049 df-plusg 17082 df-mulr 17083 df-starv 17084 df-sca 17085 df-vsca 17086 df-ip 17087 df-tset 17088 df-ple 17089 df-ds 17091 df-unif 17092 df-0g 17259 df-mgm 18433 df-sgrp 18482 df-mnd 18493 df-mhm 18537 df-grp 18687 df-minusg 18688 df-sbg 18689 df-subg 18860 df-ghm 18941 df-cmn 19499 df-abl 19500 df-mgp 19832 df-ur 19849 df-ring 19896 df-cring 19897 df-oppr 19978 df-dvdsr 19999 df-unit 20000 df-rnghom 20075 df-drng 20116 df-subrg 20149 df-staf 20233 df-srng 20234 df-lmod 20253 df-lmhm 20412 df-lvec 20493 df-sra 20562 df-rgmod 20563 df-cnfld 20726 df-phl 20959 df-nlm 23870 df-clm 24354 df-cph 24460 |
This theorem is referenced by: minveclem2 24718 |
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