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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 12147 | . . 3 ⊢ -1 ∈ ℂ | |
| 2 | normsub.2 | . . . 4 ⊢ 𝐵 ∈ ℋ | |
| 3 | normsub.1 | . . . 4 ⊢ 𝐴 ∈ ℋ | |
| 4 | 2, 3 | hvsubcli 30923 | . . 3 ⊢ (𝐵 −ℎ 𝐴) ∈ ℋ |
| 5 | 1, 4 | norm-iii-i 31041 | . 2 ⊢ (normℎ‘(-1 ·ℎ (𝐵 −ℎ 𝐴))) = ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) |
| 6 | 2, 3 | hvnegdii 30964 | . . 3 ⊢ (-1 ·ℎ (𝐵 −ℎ 𝐴)) = (𝐴 −ℎ 𝐵) |
| 7 | 6 | fveq2i 6843 | . 2 ⊢ (normℎ‘(-1 ·ℎ (𝐵 −ℎ 𝐴))) = (normℎ‘(𝐴 −ℎ 𝐵)) |
| 8 | ax-1cn 11102 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 9 | 8 | absnegi 15343 | . . . . 5 ⊢ (abs‘-1) = (abs‘1) |
| 10 | abs1 15239 | . . . . 5 ⊢ (abs‘1) = 1 | |
| 11 | 9, 10 | eqtri 2752 | . . . 4 ⊢ (abs‘-1) = 1 |
| 12 | 11 | oveq1i 7379 | . . 3 ⊢ ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) = (1 · (normℎ‘(𝐵 −ℎ 𝐴))) |
| 13 | 4 | normcli 31033 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) ∈ ℝ |
| 14 | 13 | recni 11164 | . . . 4 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) ∈ ℂ |
| 15 | 14 | mullidi 11155 | . . 3 ⊢ (1 · (normℎ‘(𝐵 −ℎ 𝐴))) = (normℎ‘(𝐵 −ℎ 𝐴)) |
| 16 | 12, 15 | eqtri 2752 | . 2 ⊢ ((abs‘-1) · (normℎ‘(𝐵 −ℎ 𝐴))) = (normℎ‘(𝐵 −ℎ 𝐴)) |
| 17 | 5, 7, 16 | 3eqtr3i 2760 | 1 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) = (normℎ‘(𝐵 −ℎ 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 ‘cfv 6499 (class class class)co 7369 1c1 11045 · cmul 11049 -cneg 11382 abscabs 15176 ℋchba 30821 ·ℎ csm 30823 normℎcno 30825 −ℎ cmv 30827 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 ax-pre-sup 11122 ax-hfvadd 30902 ax-hvcom 30903 ax-hv0cl 30905 ax-hfvmul 30907 ax-hvmulid 30908 ax-hvmulass 30909 ax-hvdistr1 30910 ax-hvmul0 30912 ax-hfi 30981 ax-his1 30984 ax-his3 30986 ax-his4 30987 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 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 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-om 7823 df-2nd 7948 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-er 8648 df-en 8896 df-dom 8897 df-sdom 8898 df-sup 9369 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-div 11812 df-nn 12163 df-2 12225 df-3 12226 df-n0 12419 df-z 12506 df-uz 12770 df-rp 12928 df-seq 13943 df-exp 14003 df-cj 15041 df-re 15042 df-im 15043 df-sqrt 15177 df-abs 15178 df-hnorm 30870 df-hvsub 30873 |
| This theorem is referenced by: normsub 31045 norm3adifii 31050 |
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