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Mirrors > Home > HSE Home > Th. List > normsubi | Structured version Visualization version GIF version |
Description: Negative doesn't change the norm of a Hilbert space vector. (Contributed by NM, 11-Aug-1999.) (New usage is discouraged.) |
Ref | Expression |
---|---|
normsub.1 | ⊢ 𝐴 ∈ ℋ |
normsub.2 | ⊢ 𝐵 ∈ ℋ |
Ref | Expression |
---|---|
normsubi | ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) = (normℎ‘(𝐵 −ℎ 𝐴)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | neg1cn 11738 | . . 3 ⊢ -1 ∈ ℂ | |
2 | normsub.2 | . . . 4 ⊢ 𝐵 ∈ ℋ | |
3 | normsub.1 | . . . 4 ⊢ 𝐴 ∈ ℋ | |
4 | 2, 3 | hvsubcli 28782 | . . 3 ⊢ (𝐵 −ℎ 𝐴) ∈ ℋ |
5 | 1, 4 | norm-iii-i 28900 | . 2 ⊢ (normℎ‘(-1 ·ℎ (𝐵 −ℎ 𝐴))) = ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) |
6 | 2, 3 | hvnegdii 28823 | . . 3 ⊢ (-1 ·ℎ (𝐵 −ℎ 𝐴)) = (𝐴 −ℎ 𝐵) |
7 | 6 | fveq2i 6659 | . 2 ⊢ (normℎ‘(-1 ·ℎ (𝐵 −ℎ 𝐴))) = (normℎ‘(𝐴 −ℎ 𝐵)) |
8 | ax-1cn 10581 | . . . . . 6 ⊢ 1 ∈ ℂ | |
9 | 8 | absnegi 14745 | . . . . 5 ⊢ (abs‘-1) = (abs‘1) |
10 | abs1 14642 | . . . . 5 ⊢ (abs‘1) = 1 | |
11 | 9, 10 | eqtri 2844 | . . . 4 ⊢ (abs‘-1) = 1 |
12 | 11 | oveq1i 7152 | . . 3 ⊢ ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) = (1 · (normℎ‘(𝐵 −ℎ 𝐴))) |
13 | 4 | normcli 28892 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) ∈ ℝ |
14 | 13 | recni 10641 | . . . 4 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) ∈ ℂ |
15 | 14 | mulid2i 10632 | . . 3 ⊢ (1 · (normℎ‘(𝐵 −ℎ 𝐴))) = (normℎ‘(𝐵 −ℎ 𝐴)) |
16 | 12, 15 | eqtri 2844 | . 2 ⊢ ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) = (normℎ‘(𝐵 −ℎ 𝐴)) |
17 | 5, 7, 16 | 3eqtr3i 2852 | 1 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) = (normℎ‘(𝐵 −ℎ 𝐴)) |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 ‘cfv 6341 (class class class)co 7142 1c1 10524 · cmul 10528 -cneg 10857 abscabs 14578 ℋchba 28680 ·ℎ csm 28682 normℎcno 28684 −ℎ cmv 28686 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5189 ax-nul 5196 ax-pow 5252 ax-pr 5316 ax-un 7447 ax-cnex 10579 ax-resscn 10580 ax-1cn 10581 ax-icn 10582 ax-addcl 10583 ax-addrcl 10584 ax-mulcl 10585 ax-mulrcl 10586 ax-mulcom 10587 ax-addass 10588 ax-mulass 10589 ax-distr 10590 ax-i2m1 10591 ax-1ne0 10592 ax-1rid 10593 ax-rnegex 10594 ax-rrecex 10595 ax-cnre 10596 ax-pre-lttri 10597 ax-pre-lttrn 10598 ax-pre-ltadd 10599 ax-pre-mulgt0 10600 ax-pre-sup 10601 ax-hfvadd 28761 ax-hvcom 28762 ax-hv0cl 28764 ax-hfvmul 28766 ax-hvmulid 28767 ax-hvmulass 28768 ax-hvdistr1 28769 ax-hvmul0 28771 ax-hfi 28840 ax-his1 28843 ax-his3 28845 ax-his4 28846 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3488 df-sbc 3764 df-csb 3872 df-dif 3927 df-un 3929 df-in 3931 df-ss 3940 df-pss 3942 df-nul 4280 df-if 4454 df-pw 4527 df-sn 4554 df-pr 4556 df-tp 4558 df-op 4560 df-uni 4825 df-iun 4907 df-br 5053 df-opab 5115 df-mpt 5133 df-tr 5159 df-id 5446 df-eprel 5451 df-po 5460 df-so 5461 df-fr 5500 df-we 5502 df-xp 5547 df-rel 5548 df-cnv 5549 df-co 5550 df-dm 5551 df-rn 5552 df-res 5553 df-ima 5554 df-pred 6134 df-ord 6180 df-on 6181 df-lim 6182 df-suc 6183 df-iota 6300 df-fun 6343 df-fn 6344 df-f 6345 df-f1 6346 df-fo 6347 df-f1o 6348 df-fv 6349 df-riota 7100 df-ov 7145 df-oprab 7146 df-mpo 7147 df-om 7567 df-2nd 7676 df-wrecs 7933 df-recs 7994 df-rdg 8032 df-er 8275 df-en 8496 df-dom 8497 df-sdom 8498 df-sup 8892 df-pnf 10663 df-mnf 10664 df-xr 10665 df-ltxr 10666 df-le 10667 df-sub 10858 df-neg 10859 df-div 11284 df-nn 11625 df-2 11687 df-3 11688 df-n0 11885 df-z 11969 df-uz 12231 df-rp 12377 df-seq 13360 df-exp 13420 df-cj 14443 df-re 14444 df-im 14445 df-sqrt 14579 df-abs 14580 df-hnorm 28729 df-hvsub 28732 |
This theorem is referenced by: normsub 28904 norm3adifii 28909 |
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