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Mirrors > Home > MPE Home > Th. List > nvnd | Structured version Visualization version GIF version |
Description: The norm of a normed complex vector space expressed in terms of the distance function of its induced metric. Problem 1 of [Kreyszig] p. 63. (Contributed by NM, 4-Dec-2006.) (New usage is discouraged.) |
Ref | Expression |
---|---|
nvnd.1 | ⊢ 𝑋 = (BaseSet‘𝑈) |
nvnd.5 | ⊢ 𝑍 = (0vec‘𝑈) |
nvnd.6 | ⊢ 𝑁 = (normCV‘𝑈) |
nvnd.8 | ⊢ 𝐷 = (IndMet‘𝑈) |
Ref | Expression |
---|---|
nvnd | ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑁‘𝐴) = (𝐴𝐷𝑍)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nvnd.1 | . . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈) | |
2 | nvnd.5 | . . . . 5 ⊢ 𝑍 = (0vec‘𝑈) | |
3 | 1, 2 | nvzcl 26873 | . . . 4 ⊢ (𝑈 ∈ NrmCVec → 𝑍 ∈ 𝑋) |
4 | 3 | adantr 480 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → 𝑍 ∈ 𝑋) |
5 | eqid 2610 | . . . 4 ⊢ ( −𝑣 ‘𝑈) = ( −𝑣 ‘𝑈) | |
6 | nvnd.6 | . . . 4 ⊢ 𝑁 = (normCV‘𝑈) | |
7 | nvnd.8 | . . . 4 ⊢ 𝐷 = (IndMet‘𝑈) | |
8 | 1, 5, 6, 7 | imsdval 26925 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝑍 ∈ 𝑋) → (𝐴𝐷𝑍) = (𝑁‘(𝐴( −𝑣 ‘𝑈)𝑍))) |
9 | 4, 8 | mpd3an3 1417 | . 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴𝐷𝑍) = (𝑁‘(𝐴( −𝑣 ‘𝑈)𝑍))) |
10 | eqid 2610 | . . . . . 6 ⊢ ( +𝑣 ‘𝑈) = ( +𝑣 ‘𝑈) | |
11 | eqid 2610 | . . . . . 6 ⊢ ( ·𝑠OLD ‘𝑈) = ( ·𝑠OLD ‘𝑈) | |
12 | 1, 10, 11, 5 | nvmval 26881 | . . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝑍 ∈ 𝑋) → (𝐴( −𝑣 ‘𝑈)𝑍) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝑍))) |
13 | 4, 12 | mpd3an3 1417 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴( −𝑣 ‘𝑈)𝑍) = (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝑍))) |
14 | neg1cn 11001 | . . . . . . 7 ⊢ -1 ∈ ℂ | |
15 | 11, 2 | nvsz 26877 | . . . . . . 7 ⊢ ((𝑈 ∈ NrmCVec ∧ -1 ∈ ℂ) → (-1( ·𝑠OLD ‘𝑈)𝑍) = 𝑍) |
16 | 14, 15 | mpan2 703 | . . . . . 6 ⊢ (𝑈 ∈ NrmCVec → (-1( ·𝑠OLD ‘𝑈)𝑍) = 𝑍) |
17 | 16 | oveq2d 6565 | . . . . 5 ⊢ (𝑈 ∈ NrmCVec → (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝑍)) = (𝐴( +𝑣 ‘𝑈)𝑍)) |
18 | 17 | adantr 480 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴( +𝑣 ‘𝑈)(-1( ·𝑠OLD ‘𝑈)𝑍)) = (𝐴( +𝑣 ‘𝑈)𝑍)) |
19 | 1, 10, 2 | nv0rid 26874 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴( +𝑣 ‘𝑈)𝑍) = 𝐴) |
20 | 13, 18, 19 | 3eqtrd 2648 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝐴( −𝑣 ‘𝑈)𝑍) = 𝐴) |
21 | 20 | fveq2d 6107 | . 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑁‘(𝐴( −𝑣 ‘𝑈)𝑍)) = (𝑁‘𝐴)) |
22 | 9, 21 | eqtr2d 2645 | 1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋) → (𝑁‘𝐴) = (𝐴𝐷𝑍)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 ‘cfv 5804 (class class class)co 6549 ℂcc 9813 1c1 9816 -cneg 10146 NrmCVeccnv 26823 +𝑣 cpv 26824 BaseSetcba 26825 ·𝑠OLD cns 26826 0veccn0v 26827 −𝑣 cnsb 26828 normCVcnmcv 26829 IndMetcims 26830 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-iun 4457 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-po 4959 df-so 4960 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-1st 7059 df-2nd 7060 df-er 7629 df-en 7842 df-dom 7843 df-sdom 7844 df-pnf 9955 df-mnf 9956 df-ltxr 9958 df-sub 10147 df-neg 10148 df-grpo 26731 df-gid 26732 df-ginv 26733 df-gdiv 26734 df-ablo 26783 df-vc 26798 df-nv 26831 df-va 26834 df-ba 26835 df-sm 26836 df-0v 26837 df-vs 26838 df-nmcv 26839 df-ims 26840 |
This theorem is referenced by: ubthlem1 27110 |
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