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| Mirrors > Home > HSE Home > Th. List > norm3adifii | Structured version Visualization version GIF version | ||
| Description: Norm of differences around common element. Part of Lemma 3.6 of [Beran] p. 101. (Contributed by NM, 30-Sep-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| norm3dif.1 | ⊢ 𝐴 ∈ ℋ |
| norm3dif.2 | ⊢ 𝐵 ∈ ℋ |
| norm3dif.3 | ⊢ 𝐶 ∈ ℋ |
| Ref | Expression |
|---|---|
| norm3adifii | ⊢ (abs‘((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶)))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | norm3dif.1 | . . . . . . . 8 ⊢ 𝐴 ∈ ℋ | |
| 2 | norm3dif.3 | . . . . . . . 8 ⊢ 𝐶 ∈ ℋ | |
| 3 | 1, 2 | hvsubcli 30950 | . . . . . . 7 ⊢ (𝐴 −ℎ 𝐶) ∈ ℋ |
| 4 | 3 | normcli 31060 | . . . . . 6 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ∈ ℝ |
| 5 | 4 | recni 11188 | . . . . 5 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ∈ ℂ |
| 6 | norm3dif.2 | . . . . . . . 8 ⊢ 𝐵 ∈ ℋ | |
| 7 | 6, 2 | hvsubcli 30950 | . . . . . . 7 ⊢ (𝐵 −ℎ 𝐶) ∈ ℋ |
| 8 | 7 | normcli 31060 | . . . . . 6 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ∈ ℝ |
| 9 | 8 | recni 11188 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ∈ ℂ |
| 10 | 5, 9 | negsubdi2i 11508 | . . . 4 ⊢ -((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) = ((normℎ‘(𝐵 −ℎ 𝐶)) − (normℎ‘(𝐴 −ℎ 𝐶))) |
| 11 | 6, 2, 1 | norm3difi 31076 | . . . . . 6 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ≤ ((normℎ‘(𝐵 −ℎ 𝐴)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 12 | 6, 1 | normsubi 31070 | . . . . . . 7 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) = (normℎ‘(𝐴 −ℎ 𝐵)) |
| 13 | 12 | oveq1i 7397 | . . . . . 6 ⊢ ((normℎ‘(𝐵 −ℎ 𝐴)) + (normℎ‘(𝐴 −ℎ 𝐶))) = ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 14 | 11, 13 | breqtri 5132 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 15 | 1, 6 | hvsubcli 30950 | . . . . . . 7 ⊢ (𝐴 −ℎ 𝐵) ∈ ℋ |
| 16 | 15 | normcli 31060 | . . . . . 6 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) ∈ ℝ |
| 17 | 8, 4, 16 | lesubaddi 11736 | . . . . 5 ⊢ (((normℎ‘(𝐵 −ℎ 𝐶)) − (normℎ‘(𝐴 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) ↔ (normℎ‘(𝐵 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐴 −ℎ 𝐶)))) |
| 18 | 14, 17 | mpbir 231 | . . . 4 ⊢ ((normℎ‘(𝐵 −ℎ 𝐶)) − (normℎ‘(𝐴 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 19 | 10, 18 | eqbrtri 5128 | . . 3 ⊢ -((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 20 | 4, 8 | resubcli 11484 | . . . 4 ⊢ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ∈ ℝ |
| 21 | 20, 16 | lenegcon1i 11730 | . . 3 ⊢ (-((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) ↔ -(normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶)))) |
| 22 | 19, 21 | mpbi 230 | . 2 ⊢ -(normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) |
| 23 | 1, 2, 6 | norm3difi 31076 | . . 3 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐵 −ℎ 𝐶))) |
| 24 | 4, 8, 16 | lesubaddi 11736 | . . 3 ⊢ (((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) ↔ (normℎ‘(𝐴 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐵 −ℎ 𝐶)))) |
| 25 | 23, 24 | mpbir 231 | . 2 ⊢ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 26 | 20, 16 | abslei 15358 | . 2 ⊢ ((abs‘((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶)))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) ↔ (-(normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ∧ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)))) |
| 27 | 22, 25, 26 | mpbir2an 711 | 1 ⊢ (abs‘((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶)))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2109 class class class wbr 5107 ‘cfv 6511 (class class class)co 7387 + caddc 11071 ≤ cle 11209 − cmin 11405 -cneg 11406 abscabs 15200 ℋchba 30848 normℎcno 30852 −ℎ cmv 30854 |
| 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 5251 ax-nul 5261 ax-pow 5320 ax-pr 5387 ax-un 7711 ax-cnex 11124 ax-resscn 11125 ax-1cn 11126 ax-icn 11127 ax-addcl 11128 ax-addrcl 11129 ax-mulcl 11130 ax-mulrcl 11131 ax-mulcom 11132 ax-addass 11133 ax-mulass 11134 ax-distr 11135 ax-i2m1 11136 ax-1ne0 11137 ax-1rid 11138 ax-rnegex 11139 ax-rrecex 11140 ax-cnre 11141 ax-pre-lttri 11142 ax-pre-lttrn 11143 ax-pre-ltadd 11144 ax-pre-mulgt0 11145 ax-pre-sup 11146 ax-hfvadd 30929 ax-hvcom 30930 ax-hvass 30931 ax-hv0cl 30932 ax-hvaddid 30933 ax-hfvmul 30934 ax-hvmulid 30935 ax-hvmulass 30936 ax-hvdistr1 30937 ax-hvdistr2 30938 ax-hvmul0 30939 ax-hfi 31008 ax-his1 31011 ax-his2 31012 ax-his3 31013 ax-his4 31014 |
| 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 3354 df-reu 3355 df-rab 3406 df-v 3449 df-sbc 3754 df-csb 3863 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-iun 4957 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-res 5650 df-ima 5651 df-pred 6274 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fn 6514 df-f 6515 df-f1 6516 df-fo 6517 df-f1o 6518 df-fv 6519 df-riota 7344 df-ov 7390 df-oprab 7391 df-mpo 7392 df-om 7843 df-2nd 7969 df-frecs 8260 df-wrecs 8291 df-recs 8340 df-rdg 8378 df-er 8671 df-en 8919 df-dom 8920 df-sdom 8921 df-sup 9393 df-pnf 11210 df-mnf 11211 df-xr 11212 df-ltxr 11213 df-le 11214 df-sub 11407 df-neg 11408 df-div 11836 df-nn 12187 df-2 12249 df-3 12250 df-4 12251 df-n0 12443 df-z 12530 df-uz 12794 df-rp 12952 df-seq 13967 df-exp 14027 df-cj 15065 df-re 15066 df-im 15067 df-sqrt 15201 df-abs 15202 df-hnorm 30897 df-hvsub 30900 |
| This theorem is referenced by: norm3adifi 31082 |
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