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倍周期半随机序列的猜想与性质
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作者 陈奕延 李晔 《首都师范大学学报(自然科学版)》 2016年第4期1-5,共5页
通过结合数学、概率论数理统计的相关知识内容,本文创造了一种新的序列,该序列中的一部分项是随机的且出现的概率服从相同或不同的分布,这部分项亦存在周期性,不同于传统的周期性,而是项数存在倍乘关系的项之间相等.同时,在项数存在倍... 通过结合数学、概率论数理统计的相关知识内容,本文创造了一种新的序列,该序列中的一部分项是随机的且出现的概率服从相同或不同的分布,这部分项亦存在周期性,不同于传统的周期性,而是项数存在倍乘关系的项之间相等.同时,在项数存在倍乘关系的项中,只要知道了首项和周期便可以得到其余项.所以,首项虽然具备随机性,其余的与之存在项数倍乘关系的项却不是随机的,故而整个序列中随机项与非随机项并存,故称该序列为"倍周期半随机序列".本文简单介绍了倍周期半随机序列的定义及相关性质,并用R语言绘制了相应的图例. 展开更多
关键词 倍周期 半随机性 R语言
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SEMI-LINEAR SYSTEMS OF BACKWARD STOCHASTIC PARTIAL DIFFERENTIAL EQUATIONS IN R^n 被引量:2
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作者 TANGSHANJIAN 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 2005年第3期437-456,共20页
This paper explores the diffeomorphism of a backward stochastic ordinary differential equation (BSDE) to a system of semi-linear backward stochastic partial differential equations (BSPDEs), under the inverse of a stoc... This paper explores the diffeomorphism of a backward stochastic ordinary differential equation (BSDE) to a system of semi-linear backward stochastic partial differential equations (BSPDEs), under the inverse of a stochastic flow generated by an ordinary stochastic differential equation (SDE). The author develops a new approach to BSPDEs and also provides some new results. The adapted solution of BSPDEs in terms of those of SDEs and BSDEs is constructed. This brings a new insight on BSPDEs, and leads to a probabilistic approach. As a consequence, the existence, uniqueness, and regularity results are obtained for the (classical, Sobolev, and distributional) solution of BSPDEs.The dimension of the space variable x is allowed to be arbitrary n, and BSPDEs are allowed to be nonlinear in both unknown variables, which implies that the BSPDEs may be nonlinear in the gradient. Due to the limitation of space, however, this paper concerns only classical solution of BSPDEs under some more restricted assumptions. 展开更多
关键词 Semi-linear system of backward stochastic partial differential equation Backward stochastic differential equation Stochastic differential equation Probabilistic representation Stochastic flow
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On a semilinear stochastic partial differential equation with double-parameter fractional noises 被引量:2
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作者 LIU JunFeng YAN LiTan 《Science China Mathematics》 SCIE 2014年第4期855-872,共18页
We study the existence,uniqueness and Hlder regularity of the solution to a stochastic semilinear equation arising from 1-dimensional integro-differential scalar conservation laws.The equation is driven by double-para... We study the existence,uniqueness and Hlder regularity of the solution to a stochastic semilinear equation arising from 1-dimensional integro-differential scalar conservation laws.The equation is driven by double-parameter fractional noises.In addition,the existence and moment estimate are also obtained for the density of the law of such a solution. 展开更多
关键词 stochastic partial differential equations double-parameter fractional noises H61der regularity density of the law Malliavin calculus
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EXPONENTIAL ESTIMATES FOR STOCHASTIC DELAY EQUATIONS WITH NORM-BOUNDED UNCERTAINTIES
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作者 Hongchu WANG Shigeng HU 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2009年第2期324-332,共9页
This paper presents the sufficient conditions for the exponential stability of linear or semi-linear stochastic delay equations with time-varying norm bounded parameter uncertainties.Exponen-tial estimates for the sol... This paper presents the sufficient conditions for the exponential stability of linear or semi-linear stochastic delay equations with time-varying norm bounded parameter uncertainties.Exponen-tial estimates for the solutions are also obtained by using a modified Lyapunov-Krasovski functional.These conditions can be tested numerically using interior point algorithms. 展开更多
关键词 Exponential estimates time delay uncertainty.
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