简介:作者用对数的工具基于无法缩减、积极的周期性的Markov链为部分和证明一条几乎肯定中央的限制定理,它从随机的变量的一个i.i.d序列为部分和认识到几乎肯定中央的限制定理的延期到Markov链。
简介:Let(ξn)n^∞=obeaMarkovchainwiththestatespaceχ={1,2...,b},(gn(x,y))n^∞=lbefunctionsdefinedonχ×χandFmn,bn(W)=bn/1mn+bn∑k=mn+1gk(ξk-1,ξk).InthispaperthelimitpropertiesofFmn,bn(w)andthegeneralizedrelativeen-tropydensityfmn,bn(w)=-(1/bn)logp(ξmn,mn+bn)arediscussed,andsometheoremsona.s.convergencefor(ξn)n^∞=0andthegeneralizedShannon-McMillan(AEP)theoremonfinitenonhomogeneousMarkovchainsareobtained.
简介:ThefollowingtheoremisprovedTheorem1.Letqbeapolynomialofdegreen(qPn)withndistinctzeroeslyingintheinterval[-1,1]and△’q={-1}∪{τi:q’(τi)=0,i=1,n-1}∪{1}.IfpolynomialpPnsatisfiestheinequalitythenforeachk=1,nandanyx[-1,1]itsk-thderivativesatisfiestheinequality丨pk(x)丨≤max{丨q(k)(x)丨,丨1/k(x2-1)qk+1(x)+xq(k)(x)丨}.ThisestimateleadstotheMarkovinequalityforthehigherorderderivativesofpolynomialsifwesetq=Tn,whereTnisChebyshevpolynomialleastdeviatedfromzero.SomeotherresultsareestablishedwhichgivesevidencetotheconjecturethatundertheconditionsofTheorem1theinequality‖p(k)‖≤‖qk‖holds.
简介:TheConchy’sformulaofentirefunctionsf:Ck→CisusedtoestablishMarkov-Bernsteintypeinequalitiesofmuhivariatepolynomialswithpositivecoefficientsonthek-dimensionalsimplexTkRkandonthecube[0,1]k.ThemainresultsgeneralizeandimprovethoseofG.G.Lorentz,etc.Someapplicationsofthesemequaltiesarealsoconsideredinpolynomialconstrainedapproximation.
简介:ByusingLamperti’sbijectionbetweenself-similarMarkovprocessesandLevyprocesses,weprovefinitenessofmomentsandasymptoticbehaviorofpassagetimesforincreasingself-similarMarkovprocessesvaluedin(0,∞).Wealsoinvestigatethebehavioroftheprocesswhenitcrossesalevel.Alimittheoremconcerningthedistributionoftheprocessimmediatelybeforeitcrossessomelevelisproved.Someusefulexamplesaregiven.
简介:Therearethreepartsinthisarticle.InSection1,weestablishthemodelofbranchingchainwithdriftinspace-timerandomenvironment(BCDSTRE),i.e.,thecouplingofbranchingchainandrandomwalk.InSection2,weprovethatanyBCDSTREmustbeaMarkovchainintimerandomenvironmentwhenweconsiderthedistributionoftheparticlesinspaceasarandomelement.InSection3,wecalculatethefirst-ordermomentsandthesecond-ordermomentsofBCDSTRE.
简介:Wediscusstheincompletesemi-iterativemethod(ISIM)foranapproximatesolutionofalinearfixedpointequationsx=Tx+cwithaboundedlinearoperatorTactingonacomplexBanachspaceXsuchthatitsresolventhasapoleoforderkatthepoint1.SufficientconditionsfortheconvergenceofISIMtoasolutionofx=Tx+c,wherecbelongstotherangespaceof(I-T)k,areestablished.WeshowthattheISIMhasanattractivefeaturethatitisusuallyconvergentevenwhenthespectralradiusoftheoperatorTisgreaterthan1andInd1T≥1.ApplicationsinfiniteMarkovchainisconsideredandillustrativeexamplesarereported,showingtheconvergencerateoftheISIMisveryhigh.
简介:证明了转移函数是l∞的一个子空C1上的正的压缩C0半群,其极小生成元恰好是Markov积分算子半群的生成元在C1中的部分;Markov积分算子半群的生成元稠定的充分必要条件是q-矩阵Q一致有界;同时转移函数是Feller-Reuter-Riley的充要条件是Markov积分算子半群的生成元在c0中的部分产生一个强连续半群.最后,在序Banach空间给出了增加的压缩积分算子半群的生成定理.