简介:<正>WegiveatreatmentoftheWeiertrasspointsofcurveswhichisalittledifferentfromthetreatmentbyLaksov.Weintroducethenotionoftheithweightwhichmakesthetreatmenteasierandgivesanalgorithmforcomputingthegapsequenceofaneffectivedivisorandtheweightatapoint.
简介:LaAbepointseparatinguiatalsubalgebra.ofC(T)whereTisacompactmetricspace.Foreachboundedfunctionf:TwhichiscontinuousonthecomplementofameagresubsetofTthereexistsasequence(wn)ofelementsofthealgebraAsuchthatthesequence(w)convergesuniformlytothefunctionfoneachcompactsubsetoftheinteriorofthecontinuitypointsofthefunctionf.
简介:ThepresentpaperinvestigatesthefractalstructureoffractionalintegralsofWeierstrassfunctions.Theexactboxdimensionforsuchfunctionsmanyimportantcasesisestablished.Weneedtopointoutthat,althoughtheresultitselfachievedinthepresentpaperisinteresting,thenewtechniqueandmethodshouldbeemphasized.ThesenovelideasmightbeusefultoestablishtheboxdimensionorHausdorffdimension(especiallyforthelowerbounds)formoregeneralgroupsoffunctions.
简介:ThisisastudyoftheDurand-KernerandNoureinmethodsforfindingtherootsofagivenalgebraicequationsimultaneously.Weconsidertheconditionsunderwhichtheiterativemethodsfail.Thenumericalexampleispresented.
简介:TheauthorsdefinetheGaussmapofsurfacesinthethree-dimensionalHeisenberggroupandgivearepresentationformulaforsurfacesofprescribedmeancurvature.Furthermore,asecondorderpartialdifferentialequationfortheGaussmapisobtained,anditisshownthatthisequationisthecompleteintegrabilityconditionoftherepresentation.
简介:TheauthorobtainsaWeierstrassrepresentationforsurfaceswithprescribednormalGaussmapandGausscurvatureinH3.AdifferentialequationaboutthehyperbolicGaussmapisalsoobtained,whichcharacterizestherelationamongthehyperbolicGaussmap,thenormalGaussmapandGausscurvature.TheauthordiscussestheharmonicityofthenormalGaussmapandthehyperbolicGaussmapfromsurfacewithconstantGausscurvatureinH3toS2withcertainalteredconformalmetric.Finally,theauthorconsidersthesurfacewhosenormalGaussmapisconformalandderivesacompletelynonlineardifferentialequationofsecondorderwhichgraphmustsatisfy.
简介:BasedontheWeierstrassellipticfunctionequation,anewWeierstrasssemi-rationalexpansionmethodanditsalgorithmarepresented.Themainideaofthemethodchangestheproblemsolvingsolitonequationsintoanotheronesolvingthecorrespondingsetofnonlinearalgebraicequations.WiththeaidofMaple,wechoosethemodifiedKdVequation,(2+1)-dimensionalKPequation,and(3+1)-dimensionalJimbo-Miwaequationtoillustrateouralgorithm.Asaconsequence,manytypesofnewdoublyperiodicsolutionsareobtainedintermsoftheWeierstrassellipticfunction.MoreoverthecorrespondingnewJacobiellipticfunctionsolutionsandsolitarywavesolutionsarealsopresentedassimplelimitsofdoublyperiodicsolutions.
简介:[摘要]以函数思想来贯穿中学数学内容更有利于提高数学教学质量,在培养学生的创新精神和应用数学知识解决问题的过程中,函数思想具有其他思想方法所不及的指导作用。因此,数学教学应大力加强对函数思想的进一步研究,并努力将函数思想渗透到一切可能的教学内容中去。[关键词]初中数学教学数学思想函数思想知识结构教学质量九年义务教育阶段的数学课程,致力于使学生获得适应未来社会生活和进一步发展所必需的重要数学事实以及基本的数学思想方法和必要的应用技能。把数学思想作为基础知识进行传授是加强素质教育的一项创举。我们认为,以函数思想来贯穿中学数学内容更有利于提高数学教学质量。在培养学生的创新精神和应用数学知识解决问题的过程中,函数思想具有其他思想方法所不及的指导作用。因此,在教学中把函数思想渗透到一切可能的教学内容中去......
简介:根据Borel例外函数及拟Borel例外函数的概念,应用Nevanlinna理论对它们进行了进一步的研究,并给出了Borel例外函数和l级拟Borel例外函数的几个结论.