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1.
In this paper, we study the growth of solutions of a first-order linear differential equation and that of a second-order linear differential equation. From this we obtain some uniqueness theorems of a nonconstant entire function and its first derivative having the same fixed points with the same multiplicities. The results in this paper also improve some known results. Some examples show that the results in this paper are best possible.  相似文献   

2.
《Fuzzy Sets and Systems》1989,32(3):359-367
This paper presents some results of variational inequalities for fuzzy mappings in locally convex Hausdorff topological vector spaces. As an example of applications we utilize the results to study the existence of fixed points for some kind of fuzzy mappings. The results given in this paper generalize some recent results.  相似文献   

3.
本文得到FKKM-型定理的几个新的推广定理,并将所得结果应用于研究重合点问题.文中的结果统一和包含了一些作者的最新成果.  相似文献   

4.
In this paper, we obtain some Lyapunov-type inequalities for a class of higher-order linear differential equations. The results of this paper generalize and improve some earlier results on this topic.  相似文献   

5.
Merit functions for general variational inequalities   总被引:1,自引:0,他引:1  
In this paper, we consider some classes of merit functions for general variational inequalities. Using these functions, we obtain error bounds for the solution of general variational inequalities under some mild conditions. Since the general variational inequalities include variational inequalities, quasivariational inequalities and complementarity problems as special cases, results proved in this paper hold for these problems. In this respect, results obtained in this paper represent a refinement of previously known results for classical variational inequalities.  相似文献   

6.
In this paper, we obtain some new Lyapunov-type inequalities for a class of higher-order linear differential equations with anti-periodic boundary value condition, the results of this paper are new and generalize and improve some early results in the literature.  相似文献   

7.
This paper presents some new fixed point theorems for fuzzy mappings. The results given in this paper improve and extend some recent results.  相似文献   

8.
Fanky极大极小不等式的进一步推广及对变分不等式的应用   总被引:2,自引:0,他引:2  
本文引出广义KKM映象的概念,其包含著名的KKM映象为特例.借助于这一映象,我们给出著名的KKM定理和Fan Ky极大极小不等式以一种新的推广形式.作为应用,我们考虑了变分不等式解的存在性问题.本文结果是引文[1~6]中相应结果的改进和发展.  相似文献   

9.
In this paper, we establish some new generalized KKM-type theorems based on weakly generalized KKM mapping without any convexity structure in topological spaces. As applications, some minimax inequalities and an existence theorem of equilibrium points for an abstract generalized vector equilibrium problem are proved in topological spaces. The results presented in this paper unify and generalize some known results in recent literature.  相似文献   

10.
对无限族严格伪压缩映像公共不动点问题,在Hilbert空间中,用CQ方法在适当的条件下,证明了一些强收敛定理,也推广和改进了最近一些人的最新结果.  相似文献   

11.
本文对Fuzzy映象得出了几个新的不动点定理,这些结果改进和发展了文[1,4,5]中的结果.  相似文献   

12.
乘积FC-空间中广义混合向量拟平衡问题系统   总被引:1,自引:0,他引:1  
方敏  黄南京 《数学学报》2007,50(2):291-298
本文在乘积FC-空间中引入并研究一类新的广义混合向量拟平衡问题系统,利用极大元定理,得到了关于广义混合向量拟平衡问题系统解的一些存在性定理,改进和推广了前人已有的某些结果.  相似文献   

13.
研究一致凸Banach空间中集值渐近拟非扩张映射的关于有限步迭代序列逼近公共不动点的充分必要条件,并在此条件下,证明了该序列收敛到公共不动点的一些强收敛定理,所得结果是单值映射情形的推广和发展.  相似文献   

14.
This paper deals with some existence theorems for generalized vector variational-like inequalities with set-valued mappings in topological vector spaces. The results presented in this paper generalize and improve some previously known results in the literature.  相似文献   

15.
班秀和 《数学杂志》2012,32(5):867-870
本文研究了投射根和亚投射模的性质.利用Noether环、Noether模的性质给出了亚投射模、投射根是投射的条件,环的投射根为零、幂等的条件.最后,给出了一些例子.本文的大部分结果是陈焕艮等人的一系列主要结果的推广.  相似文献   

16.
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   

17.
In this paper, we derive some condensed Cramer’s rules for the general solution, the least squares solution and the least norm solution to some restricted quaternion matrix equations, respectively. The findings of this paper extend some known results in the literature.  相似文献   

18.
The theory of symmetric functions has many applications in the investigation of fixed points, estimation of absolute values of some integrals and obtaining the results of the type of Cartan’s uniqueness theorem. In this paper, we solve some differential subordinations and superordinations involving analytic functions with respect to the symmetric points and also derive some sandwich results under certain assumptions on the parameters involved. The various results presented in this paper are shown to apply to yield the corresponding (new or known) results for many simpler function classes.  相似文献   

19.
本文在很弱的条件下得到了关于无约束最优化的Polak—Ribiere和Hestenes-Stiefel共轭梯度法的全局收敛性的新结果,这里 PR方法和HS方法中的参数β_k~(PR)和β_k~HS可以在某个负的区域内取值,这一负的区域与k有关.这些新的收敛性结果改进了文献中已有的结果.数值检验的结果表明了本文中新的 PR方法和 HS方法是相当有效的.  相似文献   

20.
在G-度量空间的框架下,利用自映象对的非相容性和(Ag)型R-弱交换性条件,在既不要求空间的完备性,也不要求映象连续的条件下,建立了一类?-压缩条件下的4个映象的几个新的公共不动点定理,此定理在很大程度上改进和发展了已有文献的相关结果.  相似文献   

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