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1.
首先引入h型Stepanov 加权伪概自守函数和∞型Stepanov加权伪概自守函数的概念, 接着建立了其函数空间的完备性以及相应组合定理, 最后证明了一类非自治无穷时滞偏中立型泛函微分方程在Sp-加权伪概自守系数下加权伪概自守解的存在唯一性.  相似文献   

2.
周辉  乔宗敏  杨刘 《应用数学》2015,28(2):239-246
本文首先引入均方权伪概自守随机过程的概念,并在Lipchitz条件下得到一个均方权伪概自守随机过程的分解定理.通过利用算子半群发展簇理论,Babach不动点定理和随机分析技巧,本文得到Hilbert空间上的一类随机发展方程的均方权伪概自守温和解的存在唯一性和稳定性结论.  相似文献   

3.
周辉  周宗福  乔宗敏 《数学杂志》2017,37(6):1134-1142
在较弱Lipschitz条件下,本文建立伪概自守随机过程分解定理,该定理推广了已知结果.利用所建立理论的性质,本文获得了一类随机微分方程的伪概自守弱解的存在唯一性条件.  相似文献   

4.
在较弱Lipschitz条件下,本文建立伪概自守随机过程分解定理,该定理推广了已知结果.利用所建立理论的性质,本文获得了一类随机微分方程的伪概自守弱解的存在唯一性条件.  相似文献   

5.
介绍了分段双加权伪概周期函数的概念.分段双加权伪概周期函数可以看做是分段加权伪概周期函数的推广也可以认为是双加权伪概周期函数的推广.首先给出分段双加权伪概周期函数的概念,然后介绍几个分段双加权伪概周期函数的几个性质:分解唯一性,分段双加权遍历空间的平移不变性.  相似文献   

6.
半线性微分方程的概自守与伪概自守解   总被引:1,自引:0,他引:1  
在Banach空间中,利用发展系统的算子半群理论和Banach压缩原理,在半线性微分方程x′(t)=A(t)x(t)+f(t,x(t))满足一定的条件下,证明了其概自守与伪概自守mild解的存在性与唯一性.  相似文献   

7.
本文研究了用Choi-Saigo-Srivastava算子定义的一类解析函数.利用分析的方法和算子理论得到类中函数的积分表达式,偏差定理,卷积性质和半径问题.所得结果推广一些作者的相关结果.  相似文献   

8.
振荡积分算子的有界性质是调和分析研究的中心内容之一.本文建立一类由Ricci和Stein定义的带非卷积核的分数次振荡积分算子在加权Lebesgue空间中的有界性质.特别地,结合复分析和数学归纳等方法得到该类算子和有界平均振幅(BMO)函数生成交换子的加权有界性质.  相似文献   

9.
本文利用加权Ditzian-Totik光滑模证明Bernstein型算子的线性组合加权逼近阶估计和等价定理;同时,研究加Jacobi权下Benstein型算子的高阶导数与所逼近函数光滑性之间的关系.  相似文献   

10.
Baskakov算子加Jacobi权逼近及其导数的正逆定理   总被引:1,自引:0,他引:1  
本文利用加权光滑模ω2ψλ(f,t)ω给出了Baskakov算子加Jacobi权逼近的正逆定理;另外,研究了加权下Baskakov算子导数与所逼近函数光滑性之间的关系.  相似文献   

11.
We prove new composition theorems for Stepanov-like almost automorphic and Stepanov-like pseudo-almost automorphic functions. An application is given to a class of evolution equations with Stepanov-like pseudo-almost automorphic perturbations.  相似文献   

12.
In this paper, we propose a new class of functions called weighted Stepanov-like pseudo almost automorphic functions, which generalize in a natural fashion the concept of almost automorphy and its various extensions. We systematically explore the properties of the weighted Stepanov-like pseudo almost automorphic functions in general Banach space including a composition result. As an application, we establish some sufficient criteria for the existence, uniqueness of the weighted pseudo almost automorphic solution to a class of partial neutral functional differential equations and also to a class of nonlinear Volterra integral equations of convolution type with infinite delay in Banach space. Some interesting examples are presented to illustrate the main findings.  相似文献   

13.
In this paper, we establish a composition theorem for weighted pseudo-almost automorphic functions under a weaker Lipschitz condition. Our composition theorem generalizes some known results. Moreover, the existence and uniqueness of pseudo-almost automorphic solutions for abstract semilinear evolution equations are studied.  相似文献   

14.
By using the method of the invariant subspaces for unbounded linear operators and Schauder??s fixed point theorem, we give an existence theorem of mild pseudo-almost periodic solutions for some semilinear differential equations with a Stepanov-like pseudo-almost periodic term under some suitable assumptions. For this purpose, we show a new composition theorem of Stepanov-like pseudo-almost periodic functions. As applications, we examine the existence of mild pseudo-almost periodic solutions to some second-order hyperbolic equations. Our work is done under a ??uniform continuity?? condition instead of the ??Lipschitz?? condition assumed in the literature.  相似文献   

15.
This paper is concerned with some properties of pseudo-almost automorphic functions, which are more general and complicated than pseudo-almost periodic functions. Using these properties, we establish an existence and uniqueness theorem for pseudo-almost automorphic mild solutions to semilinear differential equations in a Banach space.  相似文献   

16.
In this paper, we study the existence and uniqueness of a weighted pseudo-almost automorphic solution for some nonhomogeneous partial functional differential equations. We use the variation of constants formula developed in Ezzinbi and N’Guérékata (2007) [11] and the spectral decomposition of the phase space to show the main result of this work. To illustrate our main result, we study the existence and uniqueness of a weighted pseudo-almost automorphic solution for some diffusion equations with delay.  相似文献   

17.
We study the existence of almost periodic (resp., pseudo-almost periodic) mild solutions for fractional differential and integro-differential equations in the case when the forcing term belongs to the class of Stepanov almost (resp., Stepanov-like pseudo-almost) periodic functions.  相似文献   

18.
In this paper, we establish a new composition theorem about Stepanov-like pseudo almost automorphic functions under the local Lipschitz condition. Using this composition theorem, we also study the existence and uniqueness of pseudo almost automorphic solutions for nonautonomous evolution equations. Our results extend many recent known ones on these topics.  相似文献   

19.
In this paper, we introduce a new concept of bi-almost automorphic functions and obtain new existence and uniqueness theorems for pseudo-almost automorphic mild solutions to several nonautonomous differential equations. Moreover, two examples are given to illustrate the general theorems.  相似文献   

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