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Mirrors > Home > MPE Home > Th. List > nmblolbi | Structured version Visualization version GIF version |
Description: A lower bound for the norm of a bounded linear operator. (Contributed by NM, 10-Dec-2007.) (New usage is discouraged.) |
Ref | Expression |
---|---|
nmblolbi.1 | β’ π = (BaseSetβπ) |
nmblolbi.4 | β’ πΏ = (normCVβπ) |
nmblolbi.5 | β’ π = (normCVβπ) |
nmblolbi.6 | β’ π = (π normOpOLD π) |
nmblolbi.7 | β’ π΅ = (π BLnOp π) |
nmblolbi.u | β’ π β NrmCVec |
nmblolbi.w | β’ π β NrmCVec |
Ref | Expression |
---|---|
nmblolbi | β’ ((π β π΅ β§ π΄ β π) β (πβ(πβπ΄)) β€ ((πβπ) Β· (πΏβπ΄))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fveq1 6861 | . . . . . 6 β’ (π = if(π β π΅, π, (π 0op π)) β (πβπ΄) = (if(π β π΅, π, (π 0op π))βπ΄)) | |
2 | 1 | fveq2d 6866 | . . . . 5 β’ (π = if(π β π΅, π, (π 0op π)) β (πβ(πβπ΄)) = (πβ(if(π β π΅, π, (π 0op π))βπ΄))) |
3 | fveq2 6862 | . . . . . 6 β’ (π = if(π β π΅, π, (π 0op π)) β (πβπ) = (πβif(π β π΅, π, (π 0op π)))) | |
4 | 3 | oveq1d 7392 | . . . . 5 β’ (π = if(π β π΅, π, (π 0op π)) β ((πβπ) Β· (πΏβπ΄)) = ((πβif(π β π΅, π, (π 0op π))) Β· (πΏβπ΄))) |
5 | 2, 4 | breq12d 5138 | . . . 4 β’ (π = if(π β π΅, π, (π 0op π)) β ((πβ(πβπ΄)) β€ ((πβπ) Β· (πΏβπ΄)) β (πβ(if(π β π΅, π, (π 0op π))βπ΄)) β€ ((πβif(π β π΅, π, (π 0op π))) Β· (πΏβπ΄)))) |
6 | 5 | imbi2d 340 | . . 3 β’ (π = if(π β π΅, π, (π 0op π)) β ((π΄ β π β (πβ(πβπ΄)) β€ ((πβπ) Β· (πΏβπ΄))) β (π΄ β π β (πβ(if(π β π΅, π, (π 0op π))βπ΄)) β€ ((πβif(π β π΅, π, (π 0op π))) Β· (πΏβπ΄))))) |
7 | nmblolbi.1 | . . . 4 β’ π = (BaseSetβπ) | |
8 | nmblolbi.4 | . . . 4 β’ πΏ = (normCVβπ) | |
9 | nmblolbi.5 | . . . 4 β’ π = (normCVβπ) | |
10 | nmblolbi.6 | . . . 4 β’ π = (π normOpOLD π) | |
11 | nmblolbi.7 | . . . 4 β’ π΅ = (π BLnOp π) | |
12 | nmblolbi.u | . . . 4 β’ π β NrmCVec | |
13 | nmblolbi.w | . . . 4 β’ π β NrmCVec | |
14 | eqid 2731 | . . . . . . 7 β’ (π 0op π) = (π 0op π) | |
15 | 14, 11 | 0blo 29831 | . . . . . 6 β’ ((π β NrmCVec β§ π β NrmCVec) β (π 0op π) β π΅) |
16 | 12, 13, 15 | mp2an 690 | . . . . 5 β’ (π 0op π) β π΅ |
17 | 16 | elimel 4575 | . . . 4 β’ if(π β π΅, π, (π 0op π)) β π΅ |
18 | 7, 8, 9, 10, 11, 12, 13, 17 | nmblolbii 29838 | . . 3 β’ (π΄ β π β (πβ(if(π β π΅, π, (π 0op π))βπ΄)) β€ ((πβif(π β π΅, π, (π 0op π))) Β· (πΏβπ΄))) |
19 | 6, 18 | dedth 4564 | . 2 β’ (π β π΅ β (π΄ β π β (πβ(πβπ΄)) β€ ((πβπ) Β· (πΏβπ΄)))) |
20 | 19 | imp 407 | 1 β’ ((π β π΅ β§ π΄ β π) β (πβ(πβπ΄)) β€ ((πβπ) Β· (πΏβπ΄))) |
Colors of variables: wff setvar class |
Syntax hints: β wi 4 β§ wa 396 = wceq 1541 β wcel 2106 ifcif 4506 class class class wbr 5125 βcfv 6516 (class class class)co 7377 Β· cmul 11080 β€ cle 11214 NrmCVeccnv 29623 BaseSetcba 29625 normCVcnmcv 29629 normOpOLD cnmoo 29780 BLnOp cblo 29781 0op c0o 29782 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2702 ax-rep 5262 ax-sep 5276 ax-nul 5283 ax-pow 5340 ax-pr 5404 ax-un 7692 ax-cnex 11131 ax-resscn 11132 ax-1cn 11133 ax-icn 11134 ax-addcl 11135 ax-addrcl 11136 ax-mulcl 11137 ax-mulrcl 11138 ax-mulcom 11139 ax-addass 11140 ax-mulass 11141 ax-distr 11142 ax-i2m1 11143 ax-1ne0 11144 ax-1rid 11145 ax-rnegex 11146 ax-rrecex 11147 ax-cnre 11148 ax-pre-lttri 11149 ax-pre-lttrn 11150 ax-pre-ltadd 11151 ax-pre-mulgt0 11152 ax-pre-sup 11153 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-rmo 3364 df-reu 3365 df-rab 3419 df-v 3461 df-sbc 3758 df-csb 3874 df-dif 3931 df-un 3933 df-in 3935 df-ss 3945 df-pss 3947 df-nul 4303 df-if 4507 df-pw 4582 df-sn 4607 df-pr 4609 df-op 4613 df-uni 4886 df-iun 4976 df-br 5126 df-opab 5188 df-mpt 5209 df-tr 5243 df-id 5551 df-eprel 5557 df-po 5565 df-so 5566 df-fr 5608 df-we 5610 df-xp 5659 df-rel 5660 df-cnv 5661 df-co 5662 df-dm 5663 df-rn 5664 df-res 5665 df-ima 5666 df-pred 6273 df-ord 6340 df-on 6341 df-lim 6342 df-suc 6343 df-iota 6468 df-fun 6518 df-fn 6519 df-f 6520 df-f1 6521 df-fo 6522 df-f1o 6523 df-fv 6524 df-riota 7333 df-ov 7380 df-oprab 7381 df-mpo 7382 df-om 7823 df-1st 7941 df-2nd 7942 df-frecs 8232 df-wrecs 8263 df-recs 8337 df-rdg 8376 df-er 8670 df-map 8789 df-en 8906 df-dom 8907 df-sdom 8908 df-sup 9402 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 df-le 11219 df-sub 11411 df-neg 11412 df-div 11837 df-nn 12178 df-2 12240 df-3 12241 df-n0 12438 df-z 12524 df-uz 12788 df-rp 12940 df-seq 13932 df-exp 13993 df-cj 15011 df-re 15012 df-im 15013 df-sqrt 15147 df-abs 15148 df-grpo 29532 df-gid 29533 df-ginv 29534 df-ablo 29584 df-vc 29598 df-nv 29631 df-va 29634 df-ba 29635 df-sm 29636 df-0v 29637 df-nmcv 29639 df-lno 29783 df-nmoo 29784 df-blo 29785 df-0o 29786 |
This theorem is referenced by: isblo3i 29840 blometi 29842 ubthlem3 29911 htthlem 29956 |
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