共查询到20条相似文献,搜索用时 62 毫秒
1.
Khalid H. Al-Shaalan 《印度理论与应用数学杂志》2017,48(2):259-269
In this paper we prove some theorems of commutativity for near-rings with generalized derivations. As a consequence of the results obtained, we generalize some published results. Also, we give some examples to show that some conditions in some results obtained are not redundant. 相似文献
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关于更新风险模型中破产概率的若干结果 总被引:2,自引:0,他引:2
进一步研究了更新风险模型中破产概率的问题,在假定索赔额分布是重尾时,证明了若干重要结果,得到了与经典的Crammer—Lunderberg模型相一致的结论.并义推广和改进了部分已有文献中的结果。 相似文献
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Lung’an YING 《数学年刊B辑(英文版)》2007,28(4):441-452
The author studies the structure of solutions to the interface problems for second order linear elliptic partial differential equations in three space dimension.The set of singular points consists of some singular lines and some isolated singular points.It is proved that near a singular line or a singular point,each weak solution can be decomposed into two parts,a singular part and a regular part.The singular parts are some finite sum of particular solutions to some simpler equations,and the regular parts are bounded in some norms,which are slightly weaker than that in the Sobolev space H~2. 相似文献
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In this paper, we are mainly concerned with some properties of the global attractor for some p-Laplacian equation with a Lyapunov function in a Banach space. Under some suitable assumptions, we prove the existence of multiple equilibrium points in a global attractor for some p-Laplacian equation. 相似文献
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Yue WANG 《数学物理学报(B辑英文版)》2017,37(3):732-751
Using Nevanlinna theory of the value distribution of meromorphic functions, we investigate the problem of the existence of meromorphic solutions of some types of complex differential-difference equations and some properties of meromorphic solutions, and we obtain some results, which are the improvements and extensions of some results in references. Examples show that our results are precise. 相似文献
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In this article, some inequalities of the dimension of Schur multiplier of pairs of Lie algebras will be obtained and new upper bound will be compared with the existing ones in the literature. Furthermore, by using homological methods, we will derive some properties of the higher Schur multiplier of a pair of Lie algebras and give some isomorphisms that generalize some known results of Stallings in group theory setting. 相似文献
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讨论了高阶变系数泛函微分方程解的振动性,并给出了这类高阶变系数函数方程解的若干新振动准则.结果推广了目前已有的某些结果.并且给出了在差分方程中的应用. 相似文献
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By establishing the connection between graph colouring and the solution of some equation systems in finite fields, we obtain some formulas to the number of solutions of some equation systems in finite fields, in terms of chromatic polynomial of a graph. 相似文献
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BIFURCATION IN PRESCRIBED MEAN CURVATURE PROBLEM 总被引:1,自引:0,他引:1
马力 《数学物理学报(B辑英文版)》2002,22(4)
This paper discusses the existence problem in the study of some partial dif-ferential equations. The author gets some bifurcation on the prescribed mean curvature problem on the unit ball, the scalar curvature problem on the n-sphere, and some field equations. The author gives some natural conditions such that the standard bifurcation or Thorn-Mather theory can be used. 相似文献
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J.R.L. Webb 《Nonlinear Analysis: Theory, Methods & Applications》2010,72(2):1075-1077
We remark that results on existence of symmetric positive solutions obtained in some recent papers can, in fact, be deduced as special cases of some known results. We also correct the values of the principal eigenvalue previously given in some examples. 相似文献
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We prove some sharp isoperimetric type inequalities in warped product manifolds, or more generally, multiply warped product manifolds. We also relate them to inequalities involving the higher order mean-curvature integrals. Applications include some sharp eigenvalue estimates, Pólya-Szegö inequality, Faber-Krahn inequality, Sobolev inequality and some sharp geometric inequalities in some warped product spaces. 相似文献
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Yonghong Yao Haiyun Zhou Yeong-Cheng Liou 《Journal of Applied Mathematics and Computing》2008,28(1-2):39-49
In this paper, we suggest and analyze some new iterative algorithms with variable anchors for non-expansive mapping in Banach spaces. We prove that the proposed iterative algorithms converge strongly to a fixed point of some non-expansive mapping. We also obtain some corollaries which include some results as special cases. Furthermore, we conclude the strong convergence of the so-called viscosity iterative algorithms. 相似文献
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Daniel V. Mathews 《Expositiones Mathematicae》2014,32(2):121-160
In recent times a great amount of progress has been achieved in symplectic and contact geometry, leading to the development of powerful invariants of 3-manifolds such as Heegaard Floer homology and embedded contact homology. These invariants are based on holomorphic curves and moduli spaces, but in the simplest cases, some of their structure reduces to some elementary combinatorics and algebra which may be of interest in its own right. In this note, which is essentially a light-hearted exposition of some previous work of the author, we give a brief introduction to some of the ideas of contact topology and holomorphic curves, discuss some of these elementary results, and indicate how they arise from holomorphic invariants. 相似文献
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在文[1—4]的基础上,运用矩阵理论讨论了”维欧氏空间上的等角变换的判定条件和性质以及可对角化的几个必要条件,对现有结论有一定的推广. 相似文献
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In this paper, we prove some new ordering principles which generalize the well-known Brézis–Browder principle and uniformly generalize some results in the literature. As an application, we prove some vector Ekeland-type variational principles in F-type topological spaces and some new Mönch-type fixed-point theorems for discontinuous multivalued operators in F-type topological spaces and Banach spaces with weak topology. 相似文献
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Yan Ziqian 《东北数学》1995,(3)
ThreeClassesofReaction-DiffusionSystemswithNeumannBoundaryCondition¥(严子谦)YanZiqian(DepartmentofMathematics,JilinUniversity,Ch... 相似文献
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We study some semilinear elliptic equations with singular coefficients which relate to some Hardy–Sobolev inequalities. We obtain some existence results for these equations and give a theorem for prescribing the Palais–Smale sequence for these equations. Moreover, we find some interesting connections between these equations and some semilinear elliptic equations in hyperbolic space. Using these connections, we obtain many new results for these equations. 相似文献