简介:在本文中,主要讨论了(p,λ)-Koszul模范畴(Kλ~P(A))和线性表示模范畴(L(A))两者之间的关系.特别地,我们得到了KλP(A)=L(A)的一些充分必要条件.
简介:InthispaperwestudythetheoreticalpropertiesofmultigridalgorithmfordiscretizationofthePoissonequationin2Dusingamortarelementmethodundertheassumptionthatthetriangulationsoneverysubdomainareuniform.WeprovetheconvergenceoftheW-cyclewithasufficientlylargenumberofsmoothingsteps.ThevariableV-cyclemultigridpreconditionerarealsoavailable.
简介:ThepaperisacontributiontotheproblemofapproximatingrandomsetwithvaluesinaseparableBanachspace.Thisclassofset-valuedfunctioniswidelyusedinmanyareas.Weinvestigatethepropertiesofp-boundedintegrablerandomset.Basedonthisweendowitwith△pmetricwhichcanbeviewedasaintegraltypehausdorffmetricandpresentsomeapproximationtheoremofaclassofconvolutionoperatorswithrespectto△pmetric.Moreoverwealsocanestablishanalogoustheoremforotherintegraltypeoperatorin△pspace.
简介:四色问题又称四色猜想,是世界近代三大数学难题之一.1976年两位美国数学家Appel与Haken借助计算机给出了一个证明.时至今日,四色问题的正确性早已得到数学界所承认.但是围绕它的非计算机证明,在近几十年来涌现出了各种不同的研究成果.一方面丰富了图论的内容,另一方面又促进了图的染色理论的发展.本文从研究四色问题的意义出发;揭示了四色问题所隐藏的深刻规律,在此基础上提出了一个比四色问题更具有广泛意义的理论构想.主要目地为四色问题的非计算机证明提供一个研究方向.
简介:这篇文章考虑,为下列热方程
简介:本文指出[1]中关于Ap权反向Hoelder不等式的证明有误并给出一个正确的证明.
简介:引进了在单位圆盘E={Z:|Z|<1}内p叶解析函数的一个新子类Mλp(n,α,A,B)(p是正整数,n>-p的任一整数,-1B<A1,-(π)/(2)<λ<(π)/(2))证明了包含关系,研究了类中函数的积分变换,给出了准确的系数估计,解决了类Mλp(n,α,A,B)的Fekete-Szeg问题.
简介:TheHarish-ChandrahomomorphismforthehighercongruencesphericalfunctionsalgebraofChevalleygroupsoverp-adicfiealdsisgiveninthecaseoftheLevi-componentofa(rational)parabolicstlbgroup.ItisageneralizationfortheHarish-ChandrahomomorphismforthehighercongtrencespherlcalfunctionsalgebraofthegroupsGLnoverp-adicfieldinthesamecase.
简介:LetGbeap-group(poddprime)andletX=Cay(G,S)bea4-valentconnectedCayleygraph.ItisshownthatifGhasnilpotentclass2,thentheautomorphismgroupAut(X)ofXisisomorphictothesemidirectproductGRAut(G,S),whereGRistherightregularrepresentationofGandAut(G,S)isthesubgroupoftheautomorphismgroupAut(G)ofGwhichfixesSsetwise.HowevertheresultisnottrueifGhasnilpotentclass3andthispaperprovidesacounterexample.
简介:Inthispaper,westudytheexistenceofnontrivialsolutionsforthefollowingDirichletproblemforthep-Laplacian(p>1):whereΩisaboundeddomaininRn(A≥1)andf(x,u)isquasi-asymptoticallylinearwithrespectto|u|p-2uatinfinity.Recentlyitwasprovedthattheaboveproblemhasapositivesolutionundertheconditionthatf(x,s)/sp-1isnondecrcasingwithrespecttosforallx∈Ωandsomeothers.Inthispaper.byimprovingthemethodsintheliterature,weprovethatthefunctionalcorrespondingtotheaboveproblemstillsatisfiesaweakenedversionof(P.S.)conditioneveniff(x,s)/sp-1isn’tanondecreasingfunctionwithrespecttos,andthentheaboveproblemhasanontrivialweaksolutionbyMountainPassTheorem.