JournalofAppliedMathematicsandPhysics,2019,7,505-512
http://www.scirp.org/journal/jamp
ISSNOnline:2327-4379
ISSNPrint:2327-4352
TheAdditiveOperatorPreservingBirkhoff
Orthogonal
SanxingGuo
ScienceofCollege,TianjinUniversityofTechnology,Tianjin,China
Email:sanxingsan123@163.com
Howtocitethispaper:Guo,S.X.(2019)
TheAdditiveOperatorPreservingBirkhof-
fOrthogonal.JournalofAppliedMathematics
andPhysics,7,505-512.
https://doi.org/10.4236/jamp.2019.73036
Received:January30,2019
Accepted:March9,2019
Published:March12,2019
Copyright
c
2019byauthor(s)andScientific
Research PublishingInc.
This work is licensed under the Creative Com-
monsAttributionInternationalLicense(CC
BY4.0).
http://creativecommons.org/licenses/by/4.0/
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turientmontes,nasceturridiculusmus.Pel-
lentesquehabitantmorbitristiquesenectuset
netusetmalesuadafamesacturpisegestas.
Phasellusidmagna.Duismalesuadainter-
dumarcu.Integer metus.Morbipulvinarpel-
lentesquemi.Suspendissesedesteumagna
molestieegestas.Quisquemilorem,pulvinar
eget,egestasquis,luctusat,ante.Proinauc-
torvehicula purus.Fusceacnislaliquamante
hendreritpellentesque.Classaptenttacitiso-
ciosquadlitoratorquentperconubianostra,
perinceptoshymenaeos.Morbiwisi.Etiam
arcumauris,facilisissed,eleifendnon,non-
ummyut,pede.Crasutlacustempormetus
mollisplacerat.Vivamuseutortorvelmetus
interdum malesuada.
Sedeleifend,erossitametfaucibuselemen-
tum,urnasapienconsectetuermauris,quis
egestasleojustononrisus.Morbinonfelisac
liberovulputatefringilla.Maurisliberoeros,
lacinianon,sodalesquis,dapibusporttitor,
pede.Classaptenttacitisociosquadlitora
torquentperconubianostra,perinceptoshy-
menaeos.Morbi dapibus mauris condimentum
nulla.Cum sociisnatoque penatibusetmagnis
disparturientmontes,nasceturridiculusmus.
Etiamsitameterat.Nullavarius.Etiamt-
inciduntduivitaeturpis.Donecleo.Morbi
vulputateconvallisest.Integeraliquet.Pel-
lentesque aliquetsodalesurna.
Nullameleifendjustoinnisl.Inhachabitasse
plateadictumst.Morbinonummy.Aliquam
utfelis.Invelitleo,dictumvitae,posuereid,
vulputatenec,ante.Maecenasvitaepedenec
dui dignissim suscipit.Morbimagna.Vestibu-
lumidpurusegetvelitlaoreetlaoreet.Prae-
sentsedleovelnibhconvallisblandit.Ut
rutrum.Donecnibh.Donecinterdum.Fusce
sed pede sit amet elitrhoncus ultrices.Nullam
atenimvitaepedevehiculaiaculis.
Classaptenttacitisociosquadlitoratorquen-
tperconubianostra,perinceptoshymenaeos.
Aeneannonummyturpisidodio.Integereu-
ismodimperdietturpis.Utnecleonecdi-
amimperdietlacinia.Etiamegetlacuseget
miultriciesposuere.Inplacerattristiquetor-
tor.Sedportavestibulummetus.Nullaia-
culissollicitudinpede.Fusceluctustellusin
dolor.Curabiturauctorvelitasem.Mor-
bisapien.Classaptenttacitisociosquadl-
itoratorquentperconubianostra,perincep-
toshymenaeos.Donecadipiscingurnavehic-
ulanunc.Sedornareleoinleo.Inrhoncus
leoutdui.Aeneandolorquam,volutpatnec,
fringillaid,consectetuervel,pede.
Nullamalesuadarisusuturna.Aenean
pretiumvelitsitametmetus.Duisiaculis.In
hachabitasseplateadictumst.Nullammo-
lestieturpisegetnisl.Duisamassaidpede
dapibusultricies.Sedeuleo.Inatmaurissit
amettortorbibendumvarius.Phasellusjusto
risus,posuerein,sagittisac,variusvel,tor-
tor.Quisqueidenim.Phasellusconsequat,
liberopretiumnonummy fringilla,tortor lacus
vestibulumnunc,utrhoncusligulanequeid
justo.Nullamaccumsaneuismodnunc.Proin
vitae ipsumacmetusdictumtempus.Namut
wisi.Quisque tortor felis, interdum ac, sodales
a,sempera,sem.Curabiturinvelitsitamet
duitristiquesodales.Vivamusmaurispede,
laciniaeget,pellentesquequis,scelerisqueeu,
est.Aliquamrisus.Quisquebibendumpede
eudolor.
Donec tempusneque vitaeest.Aenean egestas
odio sed risus ullamcorper ullamcorper.Sed in
nullaatortortinciduntegestas.Namsapien
tortor,elementumsitamet,aliquamin,port-
titorfaucibus,enim.Nullamconguesuscipit
nibh.Quisqueconvallis.Praesentarcunibh,
vehicula eget,accumsaneu,tincidunta,nibh.
Suspendissevulputate,tortorquisadipiscing
viverra, lacus nibh dignissim tellus, eu suscipit
risusantefringilladiam.Quisquealiberov-
elpedeimperdietaliquet.Pellentesquenunc
nibh,eleifenda,consequatconsequat,hen-
dreritnec,diam.Sedurna.Maecenaslaoreet
eleifendneque.Vivamuspurusodio,eleifend
non,iaculisa,ultricessitamet,urna.Mau-
risfaucibusodiovitaerisus.Innisl.Praesent
purus.Integeriaculis,semeuegestaslacinia,
lacuspedescelerisqueaugue,inullamcorper
dolorerosaclacus.Nuncinlibero.
Fuscesuscipitcursussem.Vivamusrisusmi,
egestasac,imperdietvarius,faucibusquis,
leo.Aeneantincidunt.Donecsuscipit.Cras
idjustoquisnibhscelerisquedignissim.Ali-
quamsagittiselementumdolor.Aeneancon-
sectetuerjusto inpede.Curabitur ullamcorper
ligula nec orci.Aliquam purus turpis,aliquam
id, ornarevitae,porttitor non,wisi.Maecenas
luctusportalorem.Donecvitaeligulaeuante
pretiumvarius.Prointortormetus,convallis
et,hendreritnon,scelerisquein,urna.Cras
quisliberoeuligulabibendumtempor.Viva-
mustellusquam,malesuadaeu,tempussed,
temporsed,velit.Doneclaciniaauctorlibero.
Praesentsednequeidpedemollisrutrum.
Vestibulumiaculisrisus.Pellentesquelacus.
Ut quisnunc sedodio malesuada egestas.Duis
amagnasitametligulatristiquepretium.Ut
pharetra.Vestibulumimperdietmagnanec
wisi.Maurisconvallis.Sedaccumsansollic-
itudinmassa.Sedidenim.Nuncpedeenim,
laciniaut,pulvinarquis,suscipitsemper,elit.
Crasaccumsaneratvitaeenim.Crassollici-
tudin.Vestibulumrutrumblanditmassa.
Sedgravidalectusutpurus.Morbilaoreet
magna.Pellentesque eu wisi.Proin turpis.In-
tegersollicitudinauguenecdui.Fuscelectus.
Vivamusfaucibusnullaneclacus.Integerdi-
am.Pellentesquesodales,enimfeugiatcursus
volutpat,semmaurisdignissimmauris,quis
consequatsemestfermentumligula.Nullam
justo lectus, condimentum sit amet, posuere a,
fringillamollis,felis.Morbinulla nibh,pellen-
tesqueat,nonummyeu,sollicitudinnec,ip-
sum.Crasneque.Nuncaugue.Nullamvitae
quamidquam pulvinarblandit.Nunc sitamet
orci.Aliquameratelit,pharetranec,aliquet
a,gravidain,mi.Quisqueurnaenim,viverra
quis,suscipitquis,tinciduntut,sapien.Cras
placeratconsequatsem.Curabituracdiam.
Curabiturdiamtortor,molliset,viverraac,
tempusvel,metus.
Curabituraclorem.Vivamusnonjustoin
duimattisposuere.Etiamaccumsanligula
idpede.Maecenastinciduntdiamnecvelit.
Praesentconvallissapienacest.Aliquamul-
lamcorpereuismodnulla.Integermollisenim
veltortor.Nullasodalesplaceratnunc.Sed
tempusrutrumwisi.Duisaccumsangravi-
dapurus.Nuncnunc.Etiamfacilisisduieu
sem.Vestibulumsemper.Praesenteueros.
Vestibulumtellusnisl,dapibusid,vestibulum
sit amet,placerat ac,mauris.Maecenas etelit
uteratplaceratdictum.Namfeugiat,turpis
etsodalesvolutpat,wisiquamrhoncusneque,
vitaealiquamipsumsapienvelenim.Maece-
nassuscipitcursusmi.
Quisque consectetuer.In suscipit mauris a do-
lor pellentesque consectetuer.Mauris convallis
nequenonerat.Inlacinia.Pellentesqueleo
eros,sagittisquis,fermentumquis,tincidun-
tut,sapien.Maecenassem.Curabitureros
odio,interdumeu,feugiateu,portaac,nis-
l.Curabiturnunc.Etiam fermentum convallis
velit.Pellentesquelaoreetlacus.Quisquesed
elit.Namquistellus.Aliquamtellusarcu,
adipiscingnon,tincidunteleifend,adipiscing
quis,augue.Vivamuselementumplaceraten-
im.Suspendisseuttortor.Integerfaucibus
adipiscingfelis.Aeneanconsectetuermattis
lectus.Morbimalesuadafaucibusdolor.Nam
lacus.Etiamarculibero,malesuada vitae,ali-
quamvitae,blandittristique,nisl.
Maecenasaccumsandapibussapien.Duis
pretiumiaculisarcu.Curabiturutlacus.Ali-
quamvulputate.Suspendisseutpurus sedsem
tempor rhoncus.Utquam dui, fringillaat, dic-
tum eget,ultriciesquis,quam.Etiamsem est,
pharetra non, vulputate in, pretium at, ipsum.
Nunc semper sagittis orci.Sedscelerisque sus-
cipitdiam.Utvolutpat,doloratullamcorp-
ertristique,erospurusmollisquam,sitamet
ornareantenunc etenim.
Phasellusfringilla,metusidfeugiatcon-
sectetuer,lacuswisiultricestellus,quislobor-
tisnibhloremquistortor.Donecegestas
ornarenulla.Maurismitellus,portafau-
cibus,dictumvel,nonummyin,est.Ali-
quameratvolutpat.Intellusmagna,port-
titorlacinia,molestievitae,pellentesqueeu,
justo.Classaptenttacitisociosquadlitora
torquentperconubianostra,perinceptoshy-
menaeos.Sedorcinibh,scelerisquesitamet,
suscipitsed,placeratvel,diam.Vestibulum
nonummy vulputate orci.Donec et velit ac ar-
cuinterdumsemper.Morbipedeorci,cursus
ac,elementumnon,vehiculaut,lacus.Cras
volutpat.Namvelwisiquisliberovenenatis
placerat.Aeneansedodio.Quisqueposuere
purusacorci.Vivamusodio.Vivamusvar-
ius,nullasitametsemperviverra,odiomau-
risconsequatlacus,atvestibulumnequearcu
eutortor.Doneciaculistincidunttellus.Ali-
quameratvolutpat.Curabiturmagnalorem,
dignissimvolutpat,viverraet,adipiscingnec,
dolor.Praesentlacusmauris,dapibusvitae,
sollicitudinsitamet,nonummyeget,ligula.
Crasegestasipsumanisl.Vivamusvariusdo-
lorutdolor.Fuscevelenim.Pellentesque
accumsanligulaeteros.Crasidlacusnon
tortorfacilisisfacilisis.Etiamnislelit,cur-
sussed,fringillain,conguenec,urna.Cum
sociisnatoquepenatibusetmagnisdispar-
turientmontes,nasceturridiculusmus.In-
tegeratturpis.Cumsociisnatoquepenati-
busetmagnisdisparturientmontes,nascetur
ridiculusmus.Duisfringilla,ligulasedporta
fringilla,ligulawisicommodofelis,utadipisc-
ingfelisduiinenim.Suspendissemalesuada
ultricesante.Pellentesquescelerisqueaugue
sitameturna.Nullavolutpataliquettortor.
Crasaliquam,tellusataliquetpellentesque,
justosapiencommodoleo,idrhoncussapien
quamaterat.Nullacommodo,wisiegetsol-
licitudinpretium,orciorcialiquamorci,ut
cursusturpisjustoetlacus.Nullaveltor-
tor.Quisque eratelit, viverrasit amet,sagittis
eget,portasitamet,lacus.
In hac habitasse platea dictumst.Proin at est.
Curabitur tempusvulputateelit.Pellentesque
sem.Praesent eusapien.Duiselitmagna,ali-
quet at,tempus sed,vehicula non, enim.Mor-
biviverraarcunecpurus.Vivamusfringilla,
enimetcommodomalesuada,tortormetusel-
ementumligula,necaliquetestsapienutlec-
tus.Aliquammi.Utnecelit.Fusceeuismod
luctustellus.Curabiturscelerisque.Nullam
purus.Namultriciesaccumsanmagna.Morbi
pulvinarloremsitametipsum.Donecutjus-
tovitaenibhmolliscongue.Fuscequisdiam.
Praesent tempuserosutquam.
Donecinnisl.Fuscevitaeest.Vivamusante
ante,mattislaoreet,posuereeget,conguevel,
nunc.Fuscesem.Namvelorcieuerosviver-
raluctus.Pellentesquesitametaugue.Nunc
sitametipsumetlacusvariusnonummy.In-
teger rutrum sem egetwisi.Aeneaneu sapien.
Quisqueornaredignissimmi.Duisaurnavel
risus pharetraimperdiet.Suspendissepotenti.
Morbijusto.Aeneannecdolor.Inhac
habitasseplateadictumst.Proinnonummy
porttitorvelit.Sedsitametleonecmetus
rhoncusvarius.Crasante.Vestibulumcom-
modosemtinciduntmassa.Namjusto.Ae-
neanluctus,felisetcondimentumlacinia,lec-
tusenimpulvinarpurus,nonportavelitnisl
sed eros.Suspendisseconsequat.Maurisa dui
et tortormattispretium.Sednulla metus,vo-
lutpatid, aliquameget, ullamcorper ut,ipsum.
Morbieununc.Praesentpretium.Duisali-
quampulvinarligula.Utblandit egestasjusto.
Quisqueposueremetusviverrapede.
Vivamussodaleselementumneque.Viva-
musdignissimaccumsanneque.Sedatenim.
Vestibulumnonummyinterdumpurus.Mau-
ris ornarevelitid nibh pretium ultricies.Fusce
temporpellentesqueodio.Vivamusauguepu-
rus,laoreetin,scelerisquevel,commodoid,
wisi.Duisenim.Nulla interdum, nunc eusem-
pereleifend,enimdolorpretiumelit,utcom-
modoligulanislaest.Vivamusante.Nulla
leomassa,posuerenec,volutpatvitae,rhon-
cuseu,magna.
Quisquefacilisisauctorsapien.Pellentesque
gravidahendreritlectus.Maurisrutrumso-
dalessapien.Fuscehendreritsemvellorem.
Integerpellentesquemassavelaugue.Integer
elit tortor, feugiat quis, sagittis et, ornare non,
lacus.Vestibulumposuerepellentesqueeros.
Quisquevenenatisipsumdictumnulla.Ali-
quam quis quam nonmetus eleifend interdum.
Nam eget sapien ac mauris malesuadaadipisc-
ing.Etiameleifendnequesedquam.Nulla
facilisi.Proinaligula.Sedidduieunibh
egestastincidunt.Suspendissearcu.
Maecenasdui.Aliquamvolutpatauctorlorem.
Crasplaceratestvitaelectus.Curabitur
massalectus,rutrumeuismod,dignissimut,
dapibus a, odio.Ut eros erat, vulputate ut, in-
terdumnon,portaeu,erat.Crasfermentum,
felis inporta congue,velit leo facilisisodio,vi-
taeconsectetuerloremquamvitaeorci.Sed
ultrices,pedeeuplaceratauctor,anteligula
rutrum tellus,vel posuerenibh lacus necnibh.
Maecenaslaoreetdoloratenim.Donecmo-
lestie dolornec metus.Vestibulum libero.Sed
quiserat.Sedtristique.Duispedeleo,fer-
mentumquis,consectetuereget,vulputatesit
amet,erat.
Donecvitaevelit.Suspendisseportafermen-
tummauris.Utvelnuncnonmaurisphare-
travarius.Duisconsequatliberoquisurna.
Maecenasatante.Vivamusvarius,wisised
egestastristique,odiowisiluctusnulla, lobor-
tisdictumdolorligulainlacus.Vivamusali-
quam, urna sed interdum porttitor,metus orci
interdum odio,sitameteuismodlectusfeliset
leo.Praesentacwisi.Namsuscipitvestibu-
lum sem.Praesent eu ipsumvitae pedecursus
venenatis.Duis sed odio.Vestibulum eleifend.
Nullautmassa.Proinrutrummattissapien.
Curabiturdictumgravidaante.
Phasellusplaceratvulputatequam.Maece-
nasattellus.Pellentesquenequediam,dig-
nissim ac, venenatisvitae, consequat ut, lacus.
Nam nibh.Vestibulum fringilla arcu mollis ar-
cu.Sedetturpis.Donecsemtellus,volut-
pat et,varius eu,commodo sed,lectus.Lorem
ipsumdolorsitamet,consectetueradipiscing
elit.Quisqueenimarcu,suscipitnec,tempus
at,imperdietvel,metus.Morbivolutpatpu-
rusaterat.Donecdignissim,semidsemper
tempus, nibh massa eleifendturpis, sed pellen-
tesquewisipurussedlibero.Nullamlobortis
tortorvelrisus.Pellentesqueconsequatnulla
eutellus.Donecvelit.Aliquamfermentum,
wisiacrhoncusiaculis,tellusnuncmalesuada
orci,quisvolutpatduimagnaidmi.Nuncvel
ante.Duisvitaelacus.Crasnecipsum.
Morbinunc.Aliquamconsectetuervarius nul-
la.Phaselluseros.Crasdapibusporttitorris-
us.Maecenasultricesmiseddiam.Praesent
gravida velit at elit vehicula porttitor.Phasel-
lusnislmi,sagittisac,pulvinarid,gravida sit
amet,erat.Vestibulumest.Loremipsumdo-
lorsitamet,consectetueradipiscingelit.Cur-
abitur idsem elementumleo rutrum hendrerit.
Utatmi.Donectinciduntfaucibusmassa.
Sed turpis quam, sollicitudin a, hendrerit eget,
pretiumut,nisl.Duishendreritligula.Nunc
pulvinarcongueurna.
Nuncvelit.Nullamelitsapien,eleifendeu,
commodo nec, semper sit amet, elit.Nulla lec-
tus risus,condimentum ut,laoreeteget,viver-
ra nec, odio.Proin lobortis.Curabitur dictum
arcuvelwisi.Crasidnullavenenatistortor
congueultrices.Pellentesqueegetpede.Sed
eleifendsagittiselit.Namsedtellussitamet
lectusullamcorper tristique.Mauris enimsem,
tristiqueeu,accumsanat,scelerisquevulpu-
tate, neque.Quisquelacus.Donec etipsum sit
amet elitnonummy aliquet.Sed viverra nislat
sem.Namdiam.Maurisutdolor.Curabitur
ornaretortorcursusvelit.
Morbitinciduntposuerearcu.Crasvenenatis
estvitaedolor.Vivamusscelerisquesemper
mi.Donecipsumarcu,consequatscelerisque,
viverraid,dictumat,metus.Loremipsum
dolor sit amet, consectetuer adipiscing elit.Ut
pede sem, tempus ut, porttitor bibendum, mo-
lestieeu,elit.Suspendissepotenti.Sedidlec-
tus sitamet purusfaucibus vehicula.Praesen-
tsedsemnonduipharetrainterdum.Nam
viverra ultricesmagna.
Aeneanlaoreetaliquamorci.Nuncinterdum
elementumurna.Quisqueerat.Nullamtem-
porneque.Maecenasvelitnibh,scelerisquea,
consequatut,viverrain,enim.Duismagna.
Donecodioneque,tristiqueet,tincidunteu,
rhoncusac,nunc.Maurismalesuadamalesua-
da elit.Etiam lacus mauris, pretium vel, blan-
ditin,ultriciesid,libero.Phasellusbibendum
eratutdiam.Incongueimperdietlectus.
Aeneanscelerisque.Fuscepretiumporttitor
lorem.Inhac habitasseplatea dictumst.Nulla
sitametnislatsapienegestaspretium.Nunc
nontellus.Vivamusaliquet.Namadipiscing
euismoddolor.Aliquameratvolutpat.Nul-
lautipsum.Quisquetinciduntauctorau-
gue.Nuncimperdietipsumegetelit.Ali-
quamquamleo,consectetuernon,ornaresit
amet,tristiquequis,felis.Vestibulumante ip-
sumprimisinfaucibusorciluctusetultrices
posuerecubiliaCurae;Pellentesqueinterdum
quamsitametmi.Pellentesquemaurisdui,
dictuma,adipiscingac,fermentumsitamet,
lorem.
Utquiswisi.Praesentquismassa.Vivamus
egestasrisusegetlacus.Nunctincidunt,risus
quisbibendumfacilisis,lorempurusrutrum
neque,necportatortorurnaquisorci.Ae-
neanaliquet,liberosempervolutpatluctus,
pedeeratlaciniaaugue,quisrutrumsemip-
sumsitametpede.Vestibulumaliquet,nibh
sediaculissagittis,odiodolorblanditaugue,
egetmollisurnatellusidtellus.Aeneanali-
quetaliquamnunc.Nullaultriciesjustoeget
orci.Phasellustristiquefermentumleo.Sed
massametus,sagittisut,semperut,pharetra
vel,erat.Aliquamquamturpis,egestasvel,
elementumin,egestassitamet,lorem.Duis
convallis,wisisitametmollismolestie,libero
mauris portadui,vitaealiquam arcuturpisac
sem.Aliquamaliquetdapibusmetus.
Vivamuscommodoeroseleifenddui.Vestibu-
luminleoeuerattristiquemattis.Crasat
elit.Craspellentesque.Nullamidlacussit
ametliberoaliquethendrerit.Proinplacerat,
minonelementumlaoreet,eroselittincidun-
tmagna,arhoncussemarcuidodio.Nul-
laegetleoaleoegestasfacilisis.Curabitur
quisvelit.Phasellus aliquam,tortornecornare
rhoncus,purusurnaposuerevelit,etcommo-
dorisustellusquistellus.Vivamusleoturpis,
tempussitamet,tristiquevitae,laoreetquis,
odio.Proinscelerisquebibendumipsum.Eti-
amnisl.Praesentveldolor.Pellentesquevel
magna.Curabitururna.Vivamuscongueur-
na in velit.Etiam ullamcorper elementum dui.
Praesentnon urna.Sed placeratquam non mi.
Pellentesquediammagna,ultricieseget,ultri-
cesplacerat,adipiscingrutrum,sem.
Morbisem.Nullafacilisi.Vestibulumante
ipsumprimisinfaucibusorciluctusetultri-
cesposuerecubiliaCurae;Nullafacilisi.Mor-
bisagittisultriceslibero.Praesenteuligula
sedsapienauctorsagittis.Classaptenttaciti
sociosquadlitoratorquentperconubianos-
tra,perinceptoshymenaeos.Donecvelnunc.
Nuncfermentum,lacusidaliquamporta,dui
tortoreuismoderos,velmolestieipsumpurus
eulacus.Vivamuspede arcu,euismod ac,tem-
pusid,pretiumet,lacus.Curabitursodales
dapibusurna.Nunceusapien.Doneceget
nuncapededictumpretium.Proinmauris.
Vivamusluctusliberovelnibh.
Fuscetristiquerisusidwisi.Integermolestie
massaidsem.Vestibulumveldolor.Pel-
lentesquevelurnavelrisusultricieselemen-
tum.Quisquesapien urna,blanditnec,iaculis
ac,viverrain,odio.Inhachabitasseplatea
dictumst.Morbinequelacus,convallisvitae,
commodoac,fermentumeu,velit.Sedinor-
ci.Infringillaturpisnonarcu.Donecinante.
Phasellustemporfeugiatvelit.Aeneanvar-
iusmassanonturpis.Vestibulumanteipsum
primisinfaucibusorciluctusetultricespo-
suerecubiliaCurae;
Aliquamtortor.Morbiipsummassa,imperdi-
etnon,consectetuervel,feugiatvel,lorem.
Quisqueeget loremnec elitmalesuada vestibu-
lum.Quisquesollicitudinipsumvel sem.Nul-
laenim.Proinnonummyfelisvitaefelis.Nul-
lampellentesque.Duisrutrumfeugiatfe-
lis.Maurisvelpedesedliberotinciduntmol-
lis.Phasellussedurnarhoncusdiameuismod
bibendum.Phasellussednisl.Integercondi-
mentumjusto id orciiaculis varius.Quisque et
lacus.Phaselluselementum,justoat dignissim
auctor,wisiodio lobortisarcu,sed sollicitudin
felisfeliseuneque.Praesentatlacus.
Vivamussitametpede.Duisinterdum,nunc
egetrutrumdignissim,nisldiamluctusleo,
ettinciduntvelitnislidtellus.Inloremtel-
lus,aliquetvitae,portain,aliquetsed,lectus.
Phasellussodales.Utvariusscelerisqueerat.
Invelnibheuerosimperdietrutrum.Donec
ac odio nec neque vulputatesuscipit.Nam nec
magna.Pellentesquehabitantmorbitristique
senectus et netus et malesuada fames acturpis
egestas.Nullamporta,odioetsagittisiaculis,
wisi neque fringilla sapien, vel commodo lorem
loremidelit.Utsemlectus,scelerisqueeget,
placeratet,tinciduntscelerisque,ligula.Pel-
lentesque nonorci.
Etiamvelipsum.Morbifacilisisvestibulum
nisl.Praesentcursuslaoreetfelis.Integer
adipiscingpretiumorci.Nullafacilisi.Quisque
posuerebibendumpurus.Nullaquammauris,
cursuseget,convallisac,molestienon,enim.
Aliquamcongue.Quisquesagittisnonummy
sapien.Proinmolestiesemvitaeurna.Mae-
cenas lorem.Vivamus viverra consequat enim.
Nuncsedpede.Praesentvitaelectus.Prae-
sentnequejusto,vehiculaeget,interdumid,
facilisiset,nibh.Phasellusatpurusetlibero
laciniadictum.Fuscealiquet.Nullaeuante
placeratleosemperdictum.Maurismetus.
Curabiturlobortis.Curabitursollicitudinhen-
dreritnunc.Donecultriceslacusidipsum.
Donecanibhutelitvestibulumtristique.In-
tegeratpede.Crasvolutpatvariusmagna.
Phaselluseuwisi.Praesentrisusjusto,lobor-
tis eget, scelerisqueac, aliquet in,dolor.Proin
idleo.Nunciaculis,mivitaeaccumsancom-
modo, nequesemlacinia nulla, quisvestibulum
justosemineros.Quisquesedmassa.Morbi
lectus ipsum, vulputate a, mollis ut,accumsan
placerat,tellus.Nullaminwisi.Vivamuseu
ligulaanuncaccumsancongue.Suspendisse
aclibero.Aliquameratvolutpat.Donecau-
gue.Nuncvenenatisfringillanibh.Fusceac-
cumsan pulvinar justo.Nullam semper,dui ut
dignissim auctor, orcilibero fringilla massa, b-
landitpulvinarpedetortoridmagna.Nunc
adipiscing justo sed velit tincidunt fermentum.
Integerplacerat.Pellentesquehabitantmorbi
tristique senectuset netusetmalesuada fames
acturpisegestas.Sedinmassa.Classaptent
tacitisociosquadlitoratorquentperconubi-
anostra,perinceptoshymenaeos.Phasellus
tempusaliquamrisus.Aliquamrutrumpurus
atmetus.Donecposuereodioaterat.Nam
nonnibh.Phasellusligula.Quisquevene-
natislectusinaugue.Sedvestibulum dapibus
neque.
Mauris tempus eros at nulla.Sed quisduidig-
nissimmaurispretiumtincidunt.Maurisac
purus.Phasellusaclibero.Etiamdapibusia-
culisnunc.Inlectus wisi,elementumeu, sollic-
itudinnec,imperdietquis,dui.Nullaviverra
nequeaclibero.Maurisurnaleo,adipiscing
eu,ultricesnon,blanditeu,dui.Maecenas
duineque,suscipitsitamet,rutruma,laoreet
in,eros.Uteunibh.Fuscenecerattempus
urnafringillatempus.Curabituridenim.Sed
ante.Crassodalesenimsitametwisi.Nunc
fermentum consequatquam.
Utauctor,augueportadignissimvestibulum,
arcudiamlobortisvelit,velscelerisqueris-
usauguesagittisrisus.Maecenaseujusto.
Pellentesquehabitant morbi tristiquesenectus
etnetusetmalesuadafamesacturpiseges-
tas.Mauriscongueligulaegettortor.Nul-
lam laoreeturnasedenim.Donecegeterosut
erosvolutpatconvallis.Praesentturpis.Inte-
germaurisdiam,elementumquis,egestasac,
rutrumvel,orci.Nullafacilisi.Quisqueadip-
iscing,nullavitaeelementumporta,semurna
volutpatleo,sedportaenimrisussedmassa.
Integeracenimquisdiamsodalesluctus.Ut
eget eros a ligula commodo ultricies.Donec eu
urnaviverradolorhendreritfeugiat.Aliquam
acorcivelerosconguepharetra.Quisque
rhoncus,justoeuvolutpat faucibus,augueleo
posuerelacus,arhoncuspuruspedevelest.
Proinultricesenim.
Aenean tincidunt laoreet dui.Vestibulum ante
ipsumprimisinfaucibusorciluctusetultri-
cesposuerecubiliaCurae;Integeripsumlec-
tus,fermentumac,malesuadain,eleifendut,
lorem.Vivamusipsumturpis,elementumvel,
hendrerit ut,semper at,metus.Vivamus sapi-
entortor,eleifendid,dapibusin,egestaset,
pede.Pellentesquefaucibus.Praesentlorem
neque, dignissim in,facilisis nec, hendreritvel,
odio.Namatdiamacnequealiquetviver-
ra.Morbidapibusligulasagittismagna.In
lobortis.Donecaliquetultricieslibero.Nunc
dictumvulputatepurus.Morbivarius.Lorem
ipsumdolorsitamet,consectetueradipiscing
elit.Intempor.Phaselluscommodoporttitor
magna.Curabiturvehiculaodioveldolor.
Praesentfacilisis,augueaadipiscingvene-
natis,liberorisusmolestieodio,pulvinarcon-
sectetuerfeliseratacmauris.Namvestibu-
lumrhoncusquam.Sedveliturna,pharetra
eu,eleifendeu,viverraat,wisi.Maecenasul-
tricesnibhatturpis.Aeneanquam.Nulla
ipsum.Aliquamposuereluctuserat.Cur-
abiturmagnafelis,laciniaet,tristiqueid,ul-
tricesut,mauris.Suspendissefeugiat.Cras
eleifendwisivitaetortor.Phasellusleopurus,
mattissitamet,auctorin,rutrumin,magna.
Inhachabitasseplateadictumst.Phasellus
imperdietmetusinsem.Vestibulumacenim
nonsemultriciessagittis.Sedveldiam.
Integervelenimsedturpisadipiscingbiben-
dum.Vestibulumpededolor,laoreetnec,po-
suerein,nonummyin,sem.Donecimperdiet
sapienplaceraterat.Donecviverra.Aliquam
eros.Nunc consequat massaid leo.Sed ullam-
corper,loreminsodalesdapibus,risusmetus
sagittislorem,nonporttitorpurusodioneco-
dio.Sedtinciduntposuereelit.Quisqueeu
enim.Donecliberorisus,feugiatac,dapibus
eget, posuere a,felis.Quisque vellectus utme-
tustincidunteleifend.Duis utpede.Duis velit
erat,venenatis vitae,vulputatea,pharetrasit
amet,est.Etiamfringillafaucibusaugue.
Aeneanvelitsem,viverraeu,tempusid,
rutrumid,mi.Nullamnecnibh.Proinullam-
corper,dolorincursustristique,erosaugue
tempornibh,atgravidadiamwisiatpurus.
Donec mattis ullamcorper tellus.Phasellus vel
nulla.Praesentinterdum,erosinsodalessol-
licitudin,nunc nulla pulvinar justo,aeuismod
erossemnecnibh.Nullamsagittisdapibus
lectus.Nullamegetipsumeutortorlobortis
sodales.Etiampurusleo,pretiumnec,feu-
giatnon,ullamcorpervel,nibh.Sedvelelit
etquamaccumsanfacilisis.Nuncleo.Sus-
pendissefaucibuslacus.
Pellentesqueinterdumsapiensednulla.Proin
tincidunt.Aliquamvolutpatestvelmassa.
Seddolorlacus,imperdietnon,ornarenon,
commodoeu,neque.Integerpretiumsem-
perjusto.Proinrisus.Nullamidquam.
Namneque.Duisvitaewisiullamcorperdi-
amcongueultricies.Quisqueligula.Mauris
vehicula.
Curabiturnuncmagna,posuereeget,vene-
natiseu,vehiculaac,velit.Aeneanornare,
massaaaccumsanpulvinar,quamlorem
laoreetpurus,eusodalesmagnarisusmolestie
lorem.Nunceratvelit,hendreritquis,male-
suadaut,aliquamvitae,wisi.Sedposuere.
Suspendisseipsumarcu,scelerisquenec,ali-
quameu,molestietincidunt,justo.Phasellus
iaculis.Sedposuereloremnonipsum.Pel-
lentesquedapibus.Suspendissequamlibero,
laoreeta,tincidunteget,consequatat,est.
Nullamutlectusnonenimconsequatfacili-
sis.Maurisleo.Quisquepedeligula,auctor
vel,pellentesquevel,posuereid,turpis.Cras
ipsumsem,cursuset,facilisisut,tempuseu-
ismod,quam.Suspendissetristiquedoloreu
orci.Maurismattis.Aeneansemper.Viva-
mustortormagna,facilisisid,variusmattis,
hendreritin,justo.Integerpurus.
Vivamusadipiscing.Curabitur imperdiet tem-
pusturpis.Vivamussapiendolor,congueve-
nenatis,euismodeget,portarhoncus,magna.
Proincondimentumpretiumenim.Fusce
fringilla,liberoetvenenatisfacilisis,erosen-
imcursusarcu,vitaefacilisisodioauguevitae
orci.Aliquamvariusnibhutodio.Sedcondi-
mentumcondimentumnunc.Pellentesque
egetmassa.Pellentesquequismauris.Donec
utligulaacpedepulvinarlobortis.Pellen-
tesqueeuismod.Classaptenttacitisociosqu
adlitoratorquentperconubianostra,perin-
ceptoshymenaeos.Praesentelit.Utlaoreet
ornareest.Phasellusgravidavulputatenulla.
Donecsitametarcuutsemtempormalesua-
da.Praesenthendreritaugueinurna.Proin
enimante,ornarevel,consequatut,blandit
in,justo.Donecfeliselit,dignissimsed,sagit-
tisut,ullamcorpera,nulla.Aeneanpharetra
vulputateodio.
Quisqueenim.Proinvelitneque,tristiqueeu,
eleifendeget,vestibulumnec,lacus.Vivamus
odio.Duisodiourna,vehiculain,elementum
aliquam,aliquetlaoreet,tellus.Sedvelit.Sed
velmiacelitaliquetinterdum.Etiamsapi-
enneque,convalliset,aliquetvel,auctornon,
arcu.Aliquamsuscipitaliquamlectus.Proin
tinciduntmagnasedwisi.Integerblanditla-
cusutlorem.Sedluctusjustosedenim.
Morbimalesuadahendreritdui.Nuncmauris
leo, dapibus sitamet, vestibulum et,commodo
id,est.Pellentesquepurus.Pellentesquetris-
tique,nuncacpulvinaradipiscing,justoeros
consequatlectus, sitamet posuerelectus neque
velaugue.Cras consectetuerlibero aceros.Ut
egetmassa.Fuscesitametenimeleifendsem
dictum auctor.In egetrisus luctuswisiconva-
llis pulvinar.Vivamus sapien risus,temporin,
viverra in, aliquetpellentesque, eros.Aliquam
euismodliberoasem.
Nunc velit augue,scelerisque dignissim,lobor-
tiset,aliquamin,risus.Ineueros.Vestibu-
lumanteipsumprimisinfaucibusorciluctus
etultricesposuerecubiliaCurae;Curabitur
vulputateelitviverraaugue.Maurisfringilla,
tortorsitametmalesuadamollis,sapienmi
dapibusodio,acimperdietligulaenimeget
nisl.Quisquevitaepedeapedealiquetsus-
cipit.Phasellustelluspede,viverravestibu-
lum,gravidaid,laoreetin,justo.Cumsoci-
isnatoquepenatibusetmagnisdisparturient
montes,nasceturridiculusmus.Integercom-
modoluctuslectus.Maurisjusto.Duisvar-
iuseros.Sedquam.Craslacuseros,rutrum
eget,variusquis,convallisiaculis,velit.Mau-
ris imperdiet, metus at tristique venenatis, pu-
rusnequepellentesquemauris,aultriceselit
lacusnectortor.Classaptenttacitisociosqu
adlitoratorquentperconubianostra,perin-
ceptoshymenaeos.Praesentmalesuada.Nam
lacuslectus,auctorsitamet,malesuadavel,
elementumeget,metus.Duisnequepede,fa-
cilisiseget,egestaselementum,nonummyid,
neque.
Proinnonsem.Donecnecerat.Proinlibero.
Aliquamviverraarcu.Donecvitaepurus.
Donecfelismi,semperid,scelerisqueporta,
sollicitudinsed,turpis.Nullainurna.Integer
variuswisinonelit.Etiamnecsem.Mau-
risconsequat,risusnecconguecondimentum,
ligulaligulasuscipiturna,vitaeportaodioer-
at quissapien.Proin luctusleoiderat.Etiam
massametus,accumsanpellentesque,sagittis
sitamet,venenatisnec,mauris.Praesentur-
na eros, ornarenec, vulputate eget, cursus sed,
justo.Phasellus nec lorem.Nullam ligula ligu-
la,mollissitamet,faucibusvel,eleifendac,
dui.Aliquameratvolutpat.
Fusce vehicula,tortoret gravida porttitor, me-
tusnibhconguelorem,uttempuspurusmau-
risapede.Integertinciduntorcisitamet
turpis.Aeneanametus.Aliquamvestibulum
lobortisfelis.Donecgravida.Sedsedurna.
Maurisetorci.Integerultricesfeugiatligu-
la.Seddignissimnibhamassa.Donecorci
dui,temporsed,tinciduntnonummy,viverra
sit amet, turpis.Quisque lobortis.Proin vene-
natistortornecwisi.Vestibulumplacerat.In
hachabitasseplateadictumst.Aliquampor-
tamiquisrisus.Donecsagittisluctusdiam.
Nam ipsumelit,imperdiet vitae,faucibusnec,
fringillaeget,leo.Etiamquisdolorinsapien
porttitorimperdiet.
Craspretium.Nullamalesuadaipsumut
libero.Suspendissegravidahendrerittellus.
Maecenas quislacus.Morbifringilla.Vestibu-
lumodioturpis,temporvitae,scelerisquea,
dictumnon,massa.Praesenteratfelis,por-
tasitamet,condimentumsitamet,placer-
atet,turpis.Praesentplaceratlacusaen-
im.Vestibulumnoneros.Utcongue.Donec
tristiquevariustortor.Pellentesquehabitant
morbi tristique senectus et netus et malesuada
famesacturpisegestas.Namdictumdictum
urna.
Phasellusvestibulumorcivelmauris.Fusce
quamleo,adipiscingac,pulvinareget,mo-
lestiesitamet,erat.Seddiam.Suspendisse
erosleo,tempuseget,dapibussitamet,tem-
puseu,arcu.Vestibulumwisimetus,dapibus
vel,luctussitamet,condimentumquis,leo.
Suspendissemolestie.Duisinante.Utso-
dales sem sit amet mauris.Suspendisse ornare
pretiumorci.Fuscetristiqueenimegetmi.
Vestibulumeroselit,gravidaac,pharetrased,
lobortisin,massa.Proinatdolor.Duisac-
cumsanaccumsanpede.Nullamblanditelit
inmagnalaciniahendrerit.Utnonummyluc-
tuseros.Fusceegettortor.
Utsitametmagna.Crasaligulaeuurna
dignissimviverra.Nullamtemporleoporta
ipsum.Praesentpurus.Nullamconsequat.
Maurisdictumsagittisdui.Vestibulumsol-
licitudinconsectetuerwisi.Insitametdiam.
Nullammalesuadapharetrarisus.Proinlacus
arcu, eleifendsed, vehicula at,conguesit amet,
sem.Sedsagittispedeanisl.Sedtincidunt o-
dioapede.Seddui.Nameuenim.Aliquam
sagittislacusegetlibero.Pellentesquediam
sem,sagittismolestie,tristiqueet,fermentum
ornare,nibh.Nullaettellusnonfelisimperdi-
etmattis.Aliquameratvolutpat.
Vestibulumsodalesipsumidaugue.Integer
ipsumpede,convallissitamet,tristiquevi-
tae,temporut,nunc.Namnonligulanon
lorem convallis hendrerit.Maecenas hendrerit.
Sedmagnaodio,aliquamimperdiet,portaac,
aliqueteget,mi.Cumsociisnatoquepenati-
busetmagnisdisparturientmontes,nascetur
ridiculusmus.Vestibulumnislsem,dignissim
vel,euismodquis,egestasut,orci.Nuncvi-
taerisusvelmetuseuismodlaoreet.Crassit
ametnequeaturpislobortisauctor.Sedali-
quamsemacelit.Crasvelitlectus,facilisis
id,dictumsed,portarutrum,nisl.Namhen-
dreritipsumsedaugue.Nullamscelerisque
hendreritwisi.Vivamusegestasarcusedpu-
rus.Utornarelectussederos.Suspendisse
potenti.Maurissollicitudinpedevelvelit.In
hachabitasseplateadictumst.
Suspendisseeratmauris,nonummyeget,
pretiumeget,consequatvel,justo.Pellen-
tesqueconsectetuereratsedlacus.Nullam
egestasnullaacdui.Doneccursusrhoncus
ipsum.Nuncetsemeumagnaegestasmale-
suada.Vivamusdictummassaatdolor.Mor-
biestnulla,faucibusac,posuerein,interdum
ut,sapien.Proinconsectetuerpretiumurna.
Donecsitametnibhnecpurusdignissimmat-
tis.Phasellusvehiculaelitatlacus.Nullafa-
cilisi.Crasutarcu.Sedconsectetuer.Integer
tristiqueelitquisfelisconsectetuereleifend.
Crasetlectus.
Utcongue malesuadajusto.Curabiturcongue,
felisathendreritfaucibus,maurislacusport-
titor pede, nec aliquam turpisdiam feugiat ar-
cu.Nullamrhoncusipsumatrisus.Vestibu-
lumadolorseddolorfermentumvulputate.
Sednecipsumdapibusurnabibendumlobor-
tis.Vestibulum elit.Namligula arcu, volutpat
eget,laciniaeu,lobortisac,urna.Nammol-
lisultricesnulla.Crasvulputate.Suspendisse
atrisusatmetuspulvinarmalesuada.Nullam
lacus.Aliquamtempusmagna.Aliquamut
purus.Prointellus.
Vestibulumante ipsumprimisinfaucibusorci
luctus et ultrices posuere cubilia Curae; Donec
scelerisquemetus.Maecenasnonmiutmetus
portahendrerit.Nuncsemper.Crasquiswisi
utloremposueretristique.Nuncvestibulum
scelerisquenulla.Suspendissepharetrasollic-
itudinante.Praesentatauguesitametante
interdum porta.Nunc bibendumaugueluctus
diam.Etiam nec sem.Sed eros turpis,facilisis
nec,vehiculavitae,aliquamsed,nulla.Cur-
abiturjustoleo,vestibulumeget,tristiqueut,
tempusat,nisl.
Nullavenenatisloremidarcu.Morbicur-
susurnaaipsum.Donecporttitor.Integer
eleifend,estnonmattismalesuada,minulla
convallismi,etauctorlectussapienutpu-
rus.Aliquamnullaaugue,pharetrasitamet,
faucibussemper,molestievel,nibh.Pellen-
tesquevestibulummagnaetmi.Sedfringilla
dolorveltellus.Nuncliberonunc,venenatis
eget,convallishendrerit,iaculiselementum,
mi.Nullamaliquam,felisetaccumsanvehic-
ula,magnajustovehiculadiam,eucondimen-
tumnislfelis etnunc.Quisquevolutpatmauris
avelit.Pellentesquemassa.Integeratlorem.
Nammetuserat,laciniaid,convallisut,pul-
vinarnon,wisi.Crasiaculismaurisutneque.
Crassodales,semvitaeimperdietconsequat,
pede purussollicitudin urna,ac aliquammetus
orciinleo.Utmolestieultricesmauris.Viva-
musvitaesem.Aliquameratvolutpat.Prae-
sentcommodo,nislacdapibusaliquet,tortor
orci sodales lorem, non ornare nulla lorem quis
nisl.
Sedatsemvitaepurusultricesvestibulum.
Vestibulumtinciduntlacusetligula.Pel-
lentesquevitaeelit.Vestibulumanteipsum
primisinfaucibusorciluctusetultricespo-
suerecubiliaCurae;Duisornare,erateget
laoreetvulputate,lacusipsumsuscipitturpis,
etbibendumnislorcinonlectus.Vestibu-
lumnecrisusnecliberofermentumfringilla.
Morbinonvelitinmagnagravidahendrerit.
Pellentesquequislectus.Vestibulumeleifend
lobortisleo.Vestibulumnonaugue.Vivamus
dictumtempordui.Maecenasatligulaidfe-
liscongueporttitor.Nullaleomagna,egestas
quis,vulputatesitamet,viverraid,velit.
Utlectuslectus,ultriciessitamet,semper
eget,laoreetnon,ante.Proinatmassaquis
nuncrhoncusmattis.Aliquamlorem.Cur-
abiturpharetraduiatneque.Aliquameutel-
lus.Aeneantempus,felisvitaevulputateia-
culis,estdolorfaucibusurna,inviverrawisi
nequenonrisus.Fusceveldolornecsapien
pretiumnonummy.Integerfaucibusmassaac
nulla ornarevenenatis.Nullaquissapien.Sed
tortor.Phasellusegetmi.Crasnunc.Crasa
enim.
Quisque nisl.In dignissim dapibus massa.Ae-
neansemmagna,scelerisquenec,ullamcorper
quis,porttitorut,lectus.Fuscedignissimfa-
cilisistortor.Vivamusgravidafelissitamet
nunc.Nampulvinarodiovelenim.Pellen-
tesquesitametest.Vivamuspulvinarleonon
sapien.Aliquameratvolutpat.Utelementum
auctormetus.Maurisvestibulumnequevitae
eros.Pellentesquealiquamquam.Donecve-
nenatistristiquepurus.Innisl.Nullavelit
libero,fermentumat,portaa,feugiatvitae,
urna.Etiamaliquetornareipsum.Proinnon
dolor.Aeneannuncligula,venenatissuscipit,
porttitorsit amet,mattissuscipit, magna.Vi-
vamusegestasviverraest.Morbiatrisussed
sapiensodalespretium.
Morbicongueconguemetus.Aeneansedpu-
rus.Nampedemagna,tristiquenec,porta
id,sollicitudinquis,sapien.Vestibulumblan-
dit.Suspendisse ut augue ac nibhullamcorper
posuere.Integereuismod,nequeateleifend
fringilla,augueelitornaredolor,veltincidunt
purusest idlacus.Vivamusloremdui, commo-
doquis,scelerisqueeu,tinciduntnon,magna.
Cras sodales.Quisque vestibulum pulvinar di-
am.Phasellustincidunt,leovitaetristiquefa-
cilisis,ipsumwisiinterdum sem,dapibussem-
pernulla velit vel lectus.Crasdapibusmauris
etaugue.Quisquecursusnullainlibero.Sus-
pendisseetloremsitametmaurismalesuada
mollis.Nullamidjusto.Maecenasvenenatis.
Doneclacusarcu,egestasac,fermentumcon-
sectetuer,tempuseu,metus.Proinsodales,
seminpretiumfermentum,arcusapiencom-
modomauris,venenatisconsequataugueur-
nainwisi.Quisquesapiennunc,variuseget,
condimentumquis,laciniain,est.Fuscefacil-
isis.Praesentnecipsum.
Suspendisseadolor.Namerateros,congue
eget,sagittisa,laciniain,pede.Maecenas
inelit.Proinmolestievariusnibh.Vivamus
tristiquepurussedaugue.Proinegestassem-
pertortor.Vestibulumanteipsumprimisin
faucibusorciluctusetultricesposuerecubil-
iaCurae;Classaptenttacitisociosquadl-
itoratorquentperconubianostra,perincep-
toshymenaeos.Vestibulumorcienim,sagittis
ornare,eleifendut,mattisat,ligula.Nulla
molestieconvallisarcu.Uterostellus,condi-
mentum at,sodalesin,ultricesvel,nulla.
Duismagnaante,bibendumeget,eleifend
eget,suscipitsed,neque.Vestibuluminmi
sedmassacursuscursus.Pellentesquepulv-
inarmollisneque.Fusceutenimvitaemauris
malesuadatincidunt.Vivamusaneque.Mau-
rispulvinar,sapienidcondimentumdictum,
quamarcurhoncusdui,idtemporlacusjusto
etjusto.Proinsitametorcieudiameleifend
blandit.Nunceratmassa,luctusac,fermen-
tumlacinia,tinciduntultrices,sapien.Prae-
sentsed orci vitaedolor sollicitudinadipiscing.
Crasaneque.Utrisusdui,interdumat,plac-
eratid,tristiqueeu,enim.Vestibulumante
ipsum primisinfaucibus orciluctusetultrices
posuerecubiliaCurae;Etiamadipiscingeros
vestibulumdolor.Pellentesquealiquam,diam
eget eleifendposuere,augueerosporttitorlec-
tus,acdignissimduimetusnecfelis.Quisque
lacinia.Vestibulumtellus.Suspendissenec
wisi.Aeneanacfelis.Aliquamultricesmetus
etnulla.
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Praesentrhoncus.Curabitursagittisestsit
ametneque.Sedcommodomalesuadalectus.
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wisigravidavehicula.Pellentesqueamassa
aleopretiumrhoncus.Suspendisseultrices.
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ttacitisociosquadlitoratorquentperconu-
bianostra,perinceptoshymenaeos.Donec
pretiumornaremauris.Phasellusauctorer-
ategetenim.Integerscelerisque,feliseucon-
sequatfringilla,loremwisiultriciesvelit,id
vehiculapurusnullaegetodio.Nullammat-
tis,diamarutrumfermentum,odiosapien
tristiquequam,idmollistellusquaminodi-
o.Mauriseusapien.Donecaliquamloremsit
ametlorempharetralobortis.
Donecacvelit.Sedconvallisvestibulumsapi-
en.Vivamustemporlacussedlacus.Nunc
utlorem.Utettortor.Nullamvariuswisiat
diam.Etiamultricies,dolorsitametfermen-
tumvulputate,nequeliberovestibulumorci,
vitaefringillanequearcualiquetante.Lorem
ipsumdolorsitamet,consectetueradipiscing
elit.Quisquevenenatislobortisaugue.Sed
tempor,tellusiaculispellentesquepharetra,
pededuimalesuadamauris,velultricesurna
maurisacnibh.Etiamnibhodio,ultriciesve-
hicula,vestibulumvitae,feugiateleifend,fe-
lis.Vivamuspulvinar.Aliquameratvolutpat.
Nullaegestasvenenatismetus.Namfeugiat
nuncquiselitegestassagittis.Sedvitaefe-
lis.Inliberoarcu,rhoncusin,commodoeget,
auctorin,enim.Vivamussuscipitest.Nul-
ladapibus,magnavelaliquetegestas,massa
massahendreritlacus,acrutrumtellustellus
sitametfelis.Crasviverra.
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sit ametmauris.Cras commodo, urna ut port-
titor venenatis, arcu metussodales risus,vitae
gravidasapienligulainest.Donecvulputate
sollicitudinwisi.Donecvehicula,estidinter-
dumornare,nibhtellusconsectetuerjusto,a
ultrices felis erat at lectus.In est massa, male-
suadanon,suscipitat,ullamcorpereu,elit.
Namnullalacus,bibendumsitamet,sagit-
tissed,temporeget,libero.Praesentligula.
Suspendissenulla.Etiamdiam.Nullaante
diam,vestibulumet,aliquetac,imperdietvi-
tae,urna.Fuscetinciduntlacusvelelit.Mae-
cenasdictum,tortornoneuismodbibendum,
pedenibhpretium tellus,at dignissimleo eros
egetpede.Nullavenenatiseleifenderos.Ae-
nean ut odio dignissim augue rutrum faucibus.
Fusceposuere,tellusegetviverramattis,er-
attellusportami,atfacilisissemnibhnon
urna.Phasellusquisturpisquismaurissus-
cipitvulputate.Sedinterdumlacusnonvelit.
Vestibulumante ipsumprimisinfaucibusorci
luctusetultricesposuerecubiliaCurae;
Vivamus vehicula leoajusto.Quisquenecau-
gue.Morbimauriswisi,aliquetvitae,dignis-
simeget,sollicitudinmolestie,ligula.Indic-
tumenimsitametrisus.Curabiturvitaevelit
eudiamrhoncushendrerit.Vivamusutelit.
Praesentmattisipsumquisturpis.Curabitur
rhoncusnequeeudui.Etiamvitaemagna.
Namullamcorper.Praesentinterdumbiben-
dummagna.Quisqueauctoraliquamdolor.
Morbieuloremetestporttitorfermentum.
Nuncegestasarcuattortorvariusviverra.
Fusceeunulla utnulla interdum consectetuer.
Vestibulumgravida.Morbimattisliberosed
est.
Abstract
TheBirkhofforthogonalplaysanimportantroleinthegeometric
studyofBanachspaces.IthasbeenconfirmedthataBirkhoffor-
thogonalitypreservinglinearoperatorbetweentwonormedlinear
spacesmustnecessarilybeascalarmultiple ofalinearisometry.In
this paper, the author givesa new result that aBirkhoff orthogonal-
itypreservingadditiveoperatorbetweentwo-dimensionalnormed
linearspacesisnecessarilyascalarmultipleofalinearisometry.
Keywords
BirkhoffOrthogonal,AdditiveOperator,SmoothPoint
1.Introduction
Thereare severalnotions oforthogonalityin normedlinear space, such
asisoscelesorthogonality,Birkhofforthogonality,Euclideanorthogo-
nality andso on.It is obvious that allthe above types oforthogonality
areequivalent totheusual(Euclidean)orthogonalityarisingfromthe
innerproductofspaces.Infact,theyareequivalenttoeachotherif
and only if the consideredspace is an inner product space; cf.[ [1], [2],
(3.1),(3.4)].
RecallthatanelementxinrealnormedlinearspaceXissaidto
beaBirkhofforthogonaltoyinX,writtenas,x
B
y,if:
kxk≤kx+kyk,kR.
TheBirkhofforthogonalplaysanimportantroleinthegeometric
study of Banach spaces.It holds greatsignificance for various geomet-
ricpropertiesofthenorm,suchasstrictconvexityandsmoothness.
Onecanfindsomedetailsin[3–6].
WesaythatanoperatorTbetweentwonormedlinearspacesX
andYpreservesBirkhofforthogonal(OP),if:
x
B
y=T(x)
B
T(y).
DOI:10.4236/jamp.2019.73036Mar.12,2019505JournalofAppliedMathematicsandPhysics
S.X.Guo
Alexanderproved thatoperators froma realBanachspace into itself
thatpreserveBirkhofforthogonalityareisometricallymultipliedby
aconstant[7].Recently,Chmieli´nskifoundthatanorthogonality
preserving linearmapbetween twoinnerproduct spacesisnecessarily
ascalarmultipleofalinearisometry[8].Thisresultwasextended
by[9]tonormedlinearspacesinthesenseofBirkhofforthogonality
withalinearoperator.
In thispaper,we willshow thata Birkhofforthogonality preserving
additivemapbetweentwo-dimensionalnormedlinearspacesisneces-
sarilyascalarmultipleofalinearisometry.
Whilefinishingtheeditingofthepaper,IwasinformedthatPawel
ojcik has also obtained theresult in [10].But theproof is essentially
constructive, and some of the techniques may be useful when studying
thepropertyoftheoperatorwhichpreservesorthononality.
2.Preliminaries
Atthebeginningofthissection,letusrecallthenotionofalinear
operatorinlinearspace.Anoperatorislinearifandonlyifitis
additiveandhomogeneous.Wecanfindanexampleoperatorwhich
isadditive butnotlinear,evenintheone-dimensionallinearspaceR.
Forexample,somesolutionsofCauchy’sequationonR.Afunction
f: RRisadditiveifitsatisfiesCauchy’sfunctionalequation,
f(x+y) = f(x)+f(y),(2.1)
forallx,yR.Bytheaxiomofchoice,thereareinfinitelymany
nonlinear functions that satisfy the equation.This was proved in 1905
byGeorgHamelusingHamelbases.Suchfunctionsaresometimes
calledHamelfunctions.Therearesomeconditionsunderwhichthe
solutiontoCauchy’sequationislinear.Thefollowingresultscanbe
foundin[11].
Theorem2.1.Anadditivefunctionf: RRislinearifoneofthe
followingconditionsholds:
{i}fiscontinuous.
{ii}fismonotonicinanyinterval.
{iii}fisboundedinanyinterval.
{iv}fisLebesguemeasurable.
Theorem2.2.Letf:RRbeanadditivefunctionand
f([0,+]) [0,+],thenfisalinear.
Proof.Sincefisadditive,thereexistsα>0such thatf(a) = αa,for
any a[0,+]Q.Withoutloss ofgenerality, weassume thatα= 1,
thenf(a)=a,foranya[0,+] Q.Weclaimthatf(a)=afor
all a[0,+].If not,there existsb[0,+]\Qsuch thatf(b) 6= b;
without loss of generality, weassume that f(b) <b.While there exists
c[0,+]Qsuchthatbc>0andf(c) f(b)>0,sinceQis
denseinR.Sof(cb)>0,whichcontradictstocb<0.Then,
f(a)=aforalla[0,+].Sincefisadditiveandf(a)=aforall
a[0,+],itfollowsthatfislinear.
Attheendofthissection,wegiveanexampletoshowthatthere
exists aBirkhofforthogonal preservingoperatorthat ishomogeneous,
butisnonlinear.
DOI:10.4236/jamp.2019.73036506JournalofAppliedMathematicsandPhysics
S.X.Guo
Example2.3.Lete
1
=(1,0)R
2
,andletT:R
2
R
2
bedefined
as
T(x) = (|<
x
kxk
,e
1
>|+1)x,xX.(2.2)
where<·,·>istheusualinnerproductofR
2
.Obviously,T(kx)=
kT(x)forallkR,andTpreservestheBirkhofforthogonal,butit
isnotadditive.
3.MainResult
Throughoutthispaper,theunitsphereofnormedspaceXwillbe
denotedasS(X),whilethesmoothpointsinS(X)aredenotedas
sm(X).ForasetAX, thenotationx
B
Ameansx
B
yfor any
yA.LetD(x)={x
S(X
)|x
(x)=kxk},thenxisasmooth
pointifandonlyifD(x)containsonlyonepoint.Next,in(A)isa
relativeinteriorpointof A.Forx,yX, let[x,y] = {λx+(1λ)y|0
λ1},span{x}= {z|zαx,αR}.
Definition3.1.LetXbearealnormedspace.Foranyx,yS(X),
x6= y,wedefinethearcofxandytobetheset
A(x,y) = {z|z=
λx+(1λ)y
kλx+(1λ)yk
[0,1]}.
ThearcA(x,y)isnon-trivialifx6= y.
Lemma3.2.LetXbeatwo-dimensionalnormedspace,thenx
S(X)isnotasmoothpointifandonlyifthereexistsanon-trivialarc
A(y
1
,y
2
)suchthatx
B
A(y
1
,y
2
).
Proof.SincexS(X)isnotasmoothpoint,thereexistx
1
,x
2
D(x),y
1
Ker(x
1
)S(X)andy
2
Ker(x
2
)S(X).Withoutloss
ofgenerality,weassumethatt=
x
2
(y
1
)
x
1
(y
2
)
<0.Forany0<λ<1,let
η=
λt
λ+λt1
,then0 <η<1,ηx
1
+(1η)x
2
D(x)and
(ηx
1
+(1η)x
2
)(
λy
1
+(1λ)y
2
kλy
1
+(1λ)y
2
k
) = 0
Sox
B
A(y
1
,y
2
).
It is obvious that for anyxS(X), theset {y|x
B
y,yS(X)}is
closed.Then,xmustbeaBirkhofforthogonaltoanuniquemaximal
arc,denotedasA(x).
Thefollowingtwolemmasareobviousfromthedefinitionofthe
smoothpoint,sowehaveomittedtheproof.
Lemma 3.3.LetXbeatwo-dimensionalnormedlinearspace,x,y
sm(X).Ifthereexistsanon-zeroelementzX,suchthatx
B
z
andy
B
z,then[x,y] S(X)or[x,y] S(X).
Lemma3.4.Let Xbeanormed linear space.Then,letxbe asmooth
pointinX.Thenthereexistsanuniquenumberasuchthatx
B
ax+y.
Lemma 3.5.LetXbeatwo-dimensionalnormedlinearspace.Then,
letx
B
yandxbeaconvexpointinS(X).Ifx
0
Xandx
0
B
y,
thenthereexistsanumberµRsuchthatx
0
= µx.
DOI:10.4236/jamp.2019.73036507JournalofAppliedMathematicsandPhysics
S.X.Guo
Proof.Ifx
0
S(X)andx
0
B
y,thenwehave[x,x
0
]S(X)or
[x,x
0
] S(X)fromLemma3.3.SincexisaconvexpointinS(X),
thenx=x
0
orx=x
0
.Similarly,ifx
0
Xandx
0
B
y,wecan
easilyfindtheremustexistanumberµRsuchthatx
0
= µx.
Lemma 3.6.LetXbeatwo-dimensionalnormedlinearspace,x,y6∈
sm(X).Ifin(A(x))A(y) 6= ,thenxandymustbelinearlydepen-
dent.
Proof.Sincex,y6∈sm(X)andin(A(x))in(A(y))6=,thereexists
z
1
,z
2
A(x)A(y).Becausedim(X) =2,bythemonotonicsubdif-
ferentialofaconvexfunctionthereexistsx
1
,x
2
D(x) D(y)such
thatx
1
(z
1
)=x
2
(z
2
)=0.Withoutlossofgenerality,letusassume
thatkyk=kxk.Hence,weobtainthat
x
1
((1λ)x+λy) = 1,x
2
((1µ)x+µy) = 1,λ,µ[0,1].
Letx
0
=
1
2
x+
1
2
y,thenwehavex
0
sm(X),whichcontradictsto
x
1
,x
2
D(x
0
)andx
1
6= x
2
.
Lemma3.7.LetXandYbothbetwo-dimensionalnormedlinear
spaces.Then,wecansuppose thatT: X−→Yis anadditiveoperator
withOP.ThenforanyxX,thereexistsafunctionf
x
:R−→
RsuchthatT(αx)=f
x
(α)T(x),foranyαR.Moreover,f
x
is
additive,andf
x
(a) = aforanyaQ.
Proof.WeonlyneedtoprovethatT(αx) span{T(x)},foranyα
R.Ifnot,thereexistsα
0
RsuchthatT(α
0
x)/span{T(x)}.Let
yXsuchthatx
B
y.
SinceT(y) span{T(x),T(α
0
x)},thereexistsp,qQsuchthat
kpT(x)+qT(α
0
x)T(y) k<
kT(y) k
2
(3.1)
Then
kT(px+
0
x) k =kpT(x)+qT(α
0
x) k
≥ kT(y) k−kpT(x)+qT(α
0
x)T(y) k
>
kT(y) k
2
>kT(px+
0
x)T(y) k
whichcontradictsto(px+
0
x)
B
yandTpreservestheBirkhoff
orthogonal.
Moreover,sinceTisadditive,foranya
1
,a
2
R,wehave
T(a
1
x)+T(a
2
x) = f
x
(a
1
)T(x)+f
x
(a
2
)T(x)
= T((a
1
+a
2
)x) = f
x
(a
1
+a
2
)T(x)(3.2)
Thusf
x
isadditive.It isobviousthat f
x
(1) = 1, sincef
x
isadditive,
itfollowsthatf
x
(a) = a,foranyaQ.
Lemma3.8.LetXandYbebothtwo-dimensionalnormedlinear
spaces,andthensupposethatT:X−→Yisanadditiveoperator
withOP.ThenforanyxX,xisasmoothpointinXifandonly
ifT(x)isasmoothpointinY.
DOI:10.4236/jamp.2019.73036508JournalofAppliedMathematicsandPhysics
S.X.Guo
Proof.Withoutlossofgenerality,wemayassumethatxS(X)and
kT(x)k= α.
If xisnotsmooth point of X,from Lemma3.2,there existsz
1
,z
2
Xsuchthatx
B
z
1
,x
B
z
2
andz
1
,z
2
arelinearlyindependent.
SinceTpreservesBirkhofforthogonal,andfromLemma3.6wehave
T(x)
B
T(z
1
);henceT(x)
B
T(z
2
)andT(z
1
),T(z
2
)arelinearly
independent.FromLemma3.2,weobtainthatT(x)isnotasmooth
pointinY.
IfxisasmoothpointinX,andT(x)isnotsmoothpointinY,
thereexistsanon-trivialarcA(y
1
,y
2
)suchthatT(x)
B
A(y
1
,y
2
)
viaLemma3.2.WecanchoosezXsuchthatx
B
zand
T(z)A(y
1
,y
2
).Thenwecanfindx
1
/span{x}andz
1
X
suchthatx
1
B
z
1
andT(z
1
)in(A(y
1
,y
2
)).Weclaimthatx
1
mustbeasmoothpointinX,indeed,ifnot,thenT(x
1
)isnotas-
moothpointinY bytheaboveproof.AssumeT(x
1
)
B
A(y
0
1
,y
0
2
),
sincein(A(y
1
,y
2
))A(y
0
1
,y
0
2
)6=.FromLemma3.7,weobtainthat
T(x
1
)span{T(x)}whichcontradictstox
1
/span{x}.Similar-
ly,wecanfindx
2
,x
3
,z
2
,z
3
X,suchthatx,x
1
,x
2
,x
3
aremul-
tiplylinearindependent,x
i
B
z
i
andT(z
i
)in(A(y
1
,y
2
)),for
i=1,2,3.SinceT(x)
B
T(z
1
)andT(x
1
)
B
T(z
1
),fromLem-
ma3.3,weobtainthat[α
T(x
1
)
kT(x
1
k
,T(x)] S
α
(Y).Similarly,weobtain
that[α
T(x
2
)
kT(x
2
k
,T(x)]S
α
(Y)and[α
T(x
3
)
kT(x
3
k
,T(x)]S
α
(Y).Since
dim(Y) = 2,itfollowsthatthereexistsi,j∈{1,2,3}suchthat
α
T(x
i
)
kT(x
i
k
[α
T(x
j
)
kT(x
j
k
,T(x)].(3.3)
SoT(x
i
)
B
T(z
i
)andT(x
i
)
B
T(z
j
),andfromLemma3.7,we
obtainthatT(x
i
) span{T(x)},whichcontradictstox
i
/span{x}.
Lemma3.9.(cf.[9])ABirkhofforthogonalitypreservinglinearmap
betweentwonormedlinearspacesisnecessarilyascalarmultipleof
alinearisometry,wheremapTissaidtobeBirkhofforthogonality
preservingifthepropertythatxisorthogonaltoy,inthesenseof
Birkhoff-James,impliesthatT(x)isorthogonaltoT(y),inthesense
ofBirkhoff-James.
Lemma3.10.LetXandYbebothtwo-dimensionalnormedlinear
spaces,andXissmooth.SupposethatT:X−→Y isanadditive
operatorwithOP.Thenwehavef
x
= f
y
,foranyx,yX,wheref
x
andf
y
asLemma3.7.
Proof.Foranyx,yXandαR,letzXsuchthatz
B
x+y.Soz
B
α(x+ y).SinceTisadditiveandpreservesBirkhoff
orthogonality,weobtainthat
T(z)
B
T(x)+T(y).(3.4)
And
T(z)
B
f
x
(α)T(x)+f
y
(α)T(y).(3.5)
SinceXissmooth,andfromLemma3.8weobtainthatT(z)is
smoothand
f
x
(α)T(x)+f
y
(α)T(y) = T(α(x+y)) span{T(x)+T(y)},(3.6)
DOI:10.4236/jamp.2019.73036509JournalofAppliedMathematicsandPhysics
S.X.Guo
therethusexistsanβRsuchthat
f
x
(α)T(x)+f
y
(α)T(y) = β((T(x)+T(y)).(3.7)
However,T(x)/spanT(y),sof
x
(α) = f
y
(α).
Theorem 3.11.LetXandYbebothtwo-dimensionalnormedlinear
spaces,andXissmooth.SupposethatT:X−→Y isanadditive
operatorwithOP.ThenTislinear.
Proof.ForanyxXandaR,thereexistszXsuchthat
x
B
ax+z.Sowehaveλx
B
λax+λzforallλ6=0.Since
TpreservesBirkhofforthogonality,andfromLemma3.10,weobtain
that
f(λ)T(x)
B
f(λa)T(x)+f(λ)T(z).(3.8)
Thatis
T(x)
B
f(λa)
f(λ)
T(x)+T(z).(3.9)
FromLemma3.7,T(x),T(z)arebothsmoothpoints.Since
T(x)
B
f(a)T(x) + T(z),wegetf(λa)=f(λ)f(a),whichmeans
fisanidentitymap.Thus,Tislinear.
Theorem 3.12.LetXandYbebothtwo-dimensionalnormedlinear
spaces,andXisnotsmooth.SupposethatT: X−→Yisanadditive
operatorwithOP.ThenTislinear.
Proof.SupposexisnotasmoothpointinX.ThenforanyzX,
thereexists[A,B]R(A6=B)suchthatx
B
ax+ zforanya
[A,B].From Lemma3.7, T(x) isnota smooth pointinY.Thus, there
existsaset[A
0
,B
0
]R(A
0
6=B
0
)suchthatT(x)
B
bT(x) + T(z)
foranyb[A
0
,B
0
],whichmeansf
x
(a)[A
0
,B
0
]foranya[A,B].
FromTheorem2.1andTheorem2.2,weobtainthatf
x
isanidentity
map.
Next,wewilldiscusstwocaseswherexisasmoothpointinX.In
caseone,ifthereexistsz/sm(X),suchthatx
B
ax+ z,where
aRanda6= 0,thenλx
B
λax+λzforallλ6= 0and
f
x
(λ)T(x)
B
f
x
(λa)T(x)+f
z
(λ)T(z).(3.10)
Thatis
T(x)
B
f
x
(λa)
f
x
(λ)
T(x)+
λ
f
x
(λ)
T(z).(3.11)
WealsohaveT(x)
B
f
x
(a)T(x) + T(z),soweobtainf
x
(λa)=
λf
x
(a).Notethatf
x
(α)=αforallαQ.Thus,weobtainthatf
x
isanidentitymap.
Incasetwo,ifx
B
zforanyz/sm(X).Sincexisasmooth
point inX,it follows thatysm(X)for any y/span{z}.So we can
choosey
1
,y
2
sm(X)suchthaty
1
=x+ kzandy
1
B
y
2
,where
k6= 0.Thenweobtainthat
T(y
1
)
B
T(x)+kT(z).(3.12)
Sincey
1
B
λy
2
foranyλR,thenweobtainthat
T(y
1
)
B
f
x
(λ)T(x)+kλT(z).(3.13)
DOI:10.4236/jamp.2019.73036510JournalofAppliedMathematicsandPhysics
S.X.Guo
Thus,wegetf
x
(λ) = λ,whichmeansf
x
isanidentitymap.
Sincef
x
isanidentitymapforallxX,itisevidentthatTis
linear.
AccordingtoLemma3.9,Theorem3.11andTheorem3.12,weob-
tainthemainresults.
Corollary 3.13.LetXandYbebothtwo-dimensionalnormedlinear
spaces.SupposethatT:X−→Y isanadditiveoperatorwithOP.
ThenTisascalarmultipleofalinearisometry.
ConflictsofInterest
Theauthordeclaresnoconflictsofinterestregardingthepublication
ofthispaper.
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