共查询到20条相似文献,搜索用时 140 毫秒
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本文在二维绝对正规范数空间上给出了计算Ptolemy常数的一些新条件,得到的结论不仅包含了先前的一些结果,而且在一些具体的空间上给出了Ptolemy常数的新结果. 相似文献
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本文利用凸刻画系数和正规结构系数,詹姆斯型常数和García-Falset系数之间的关系式,得到了空间上集值非扩张映射存在不动点的一些充分条件,这些结论不仅改进了一些文献中的结果,而且也对一些公开问题给出了解答. 相似文献
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In this paper we give some sufficient conditions for analytic functions which are not identically zero and belong to Nevanlinna class in the sector and angular domain. Moreover, their integral expressions or factorization theorems are obtained. 相似文献
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张慧 《数学物理学报(A辑)》2008,28(1):116-127
该文利用Malliavin微分的方法研究带有随机生成元的倒向随机微分方程 (简记BSDE),给出了关于比较某些BSDE的解(y,z)中z的方法, 在此基础上继续研究(y,z)的某些重要性质, 指明了当BSDE的生成元是随机的情况下,Zengjing Chen等人文章中得到的共单调定理是不成立的, 然后寻找带有随机生成元的BSDE的共单调定理成立的特殊情况, 最后研究了一类g -期望的可加性以及Choquet积分表示定理. 相似文献
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1TwoTheoremsonmultipleintegrationTheorem1.1Supposethatf(t)isarbitrarycontinuousfunctiondefinedonRandh(fl,'')fi)isarbitrarycontinuousfunctiondefinedonm(1Sp0}ProofWeshallproveitbymathematicalinduction… 相似文献
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We prove a theorem on the existence of solutions of some nonlinear functional integral equations in the Banach algebra of continuous functions on the interval [0,a]. Then we consider a nonlinear integral equation of fractional order and give some sufficient conditions for existence of solutions of this equation. We use fixed point theorems associated with the measure of noncompactness as the main tool. Our existence results include several results obtained in previous studies. Finally we present some examples which show that our results are applicable. 相似文献
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运用微分中值定理,讨论并导出相应拉格朗日型或柯西型积分中值定理,在吏弱的条件下,得出比通常积分中值定理更强的结论. 相似文献
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定义了向量筐函数的C-Stieltjes近似可表示算子,并研究了它的性质。另外,我们定义了向量值函数的近似C-Stieltjes积分,并证明了它的收敛定理。 相似文献
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Plern Saipara Yeol Je Cho 《Stochastics An International Journal of Probability and Stochastic Processes》2018,90(2):297-311
In this paper, we prove some random fixed point theorems for Hardy–Rogers self-random operators in separable Banach spaces and, as some applications, we show the existence of a solution for random nonlinear integral equations in Banach spaces. Some stochastic versions of deterministic fixed point theorems for Hardy–Rogers self mappings and stochastic integral equations are obtained. 相似文献
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Banach空间非线性脉冲Volterra型积分方程和积分-微分方程的可解性 总被引:13,自引:0,他引:13
本文在较宽松的条件下,研究了Banach空间非线性脉冲Volterra型积分方 程和脉冲积分一微分方程解的存在性,建立了新的存在性定理,本质上改进了某些已 知的结果. 相似文献
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Geometric Estimates of the First Eigenvalue of (p,q)-elliptic Quasilinear System Under Integral Curvature Condition 下载免费PDF全文
Mohammad Javad Habibi Vosta Kolaei & Shahroud Azami 《偏微分方程(英文版)》2021,34(4):348-368
Consider (M,g) as a complete, simply connected Riemannian manifold.
The aim of this paper is to provide various geometric estimates in different cases for
the first eigenvalue of (p,q)-elliptic quasilinear system in both Dirichlet and Neumann
conditions on Riemannian manifold. In some cases we add integral curvature condition and maybe we prove some theorems under other conditions. 相似文献
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In the present paper, we obtain some subordination- and superordinatiompreserving properties of certain integral operators defined on the space of normalized analytic functions in the open unit disk. The sandwich-type theorems for these integral operators are also considered. 相似文献