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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 31278 | . . . . . . 7 ⊢ (𝐴 −ℎ 𝐶) ∈ ℋ |
| 4 | 3 | normcli 31388 | . . . . . 6 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ∈ ℝ |
| 5 | 4 | recni 11211 | . . . . 5 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ∈ ℂ |
| 6 | norm3dif.2 | . . . . . . . 8 ⊢ 𝐵 ∈ ℋ | |
| 7 | 6, 2 | hvsubcli 31278 | . . . . . . 7 ⊢ (𝐵 −ℎ 𝐶) ∈ ℋ |
| 8 | 7 | normcli 31388 | . . . . . 6 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ∈ ℝ |
| 9 | 8 | recni 11211 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ∈ ℂ |
| 10 | 5, 9 | negsubdi2i 11532 | . . . 4 ⊢ -((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) = ((normℎ‘(𝐵 −ℎ 𝐶)) − (normℎ‘(𝐴 −ℎ 𝐶))) |
| 11 | 6, 2, 1 | norm3difi 31404 | . . . . . 6 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ≤ ((normℎ‘(𝐵 −ℎ 𝐴)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 12 | 6, 1 | normsubi 31398 | . . . . . . 7 ⊢ (normℎ‘(𝐵 −ℎ 𝐴)) = (normℎ‘(𝐴 −ℎ 𝐵)) |
| 13 | 12 | oveq1i 7410 | . . . . . 6 ⊢ ((normℎ‘(𝐵 −ℎ 𝐴)) + (normℎ‘(𝐴 −ℎ 𝐶))) = ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 14 | 11, 13 | breqtri 5129 | . . . . 5 ⊢ (normℎ‘(𝐵 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐴 −ℎ 𝐶))) |
| 15 | 1, 6 | hvsubcli 31278 | . . . . . . 7 ⊢ (𝐴 −ℎ 𝐵) ∈ ℋ |
| 16 | 15 | normcli 31388 | . . . . . 6 ⊢ (normℎ‘(𝐴 −ℎ 𝐵)) ∈ ℝ |
| 17 | 8, 4, 16 | lesubaddi 11760 | . . . . 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 234 | . . . 4 ⊢ ((normℎ‘(𝐵 −ℎ 𝐶)) − (normℎ‘(𝐴 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 19 | 10, 18 | eqbrtri 5125 | . . 3 ⊢ -((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 20 | 4, 8 | resubcli 11508 | . . . 4 ⊢ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ∈ ℝ |
| 21 | 20, 16 | lenegcon1i 11754 | . . 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 233 | . 2 ⊢ -(normℎ‘(𝐴 −ℎ 𝐵)) ≤ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) |
| 23 | 1, 2, 6 | norm3difi 31404 | . . 3 ⊢ (normℎ‘(𝐴 −ℎ 𝐶)) ≤ ((normℎ‘(𝐴 −ℎ 𝐵)) + (normℎ‘(𝐵 −ℎ 𝐶))) |
| 24 | 4, 8, 16 | lesubaddi 11760 | . . 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 234 | . 2 ⊢ ((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| 26 | 20, 16 | abslei 15431 | . 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 723 | 1 ⊢ (abs‘((normℎ‘(𝐴 −ℎ 𝐶)) − (normℎ‘(𝐵 −ℎ 𝐶)))) ≤ (normℎ‘(𝐴 −ℎ 𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2145 class class class wbr 5104 ‘cfv 6525 (class class class)co 7400 + caddc 11091 ≤ cle 11232 − cmin 11429 -cneg 11430 abscabs 15273 ℋchba 31176 normℎcno 31180 −ℎ cmv 31182 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-nul 5260 ax-pow 5326 ax-pr 5394 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 ax-pre-sup 11166 ax-hfvadd 31257 ax-hvcom 31258 ax-hvass 31259 ax-hv0cl 31260 ax-hvaddid 31261 ax-hfvmul 31262 ax-hvmulid 31263 ax-hvmulass 31264 ax-hvdistr1 31265 ax-hvdistr2 31266 ax-hvmul0 31267 ax-hfi 31336 ax-his1 31339 ax-his2 31340 ax-his3 31341 ax-his4 31342 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-iun 4953 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-pred 6291 df-ord 6352 df-on 6353 df-lim 6354 df-suc 6355 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-sup 9390 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12222 df-2 12291 df-3 12292 df-4 12293 df-n0 12493 df-z 12580 df-uz 12851 df-rp 13005 df-seq 14026 df-exp 14086 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-hnorm 31225 df-hvsub 31228 |
| This theorem is referenced by: norm3adifi 31410 |
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