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一类随机积分微分方程解的稳定性
引用本文:陈丽,胡良根.一类随机积分微分方程解的稳定性[J].宁波大学学报(理工版),2011,24(4):36-40.
作者姓名:陈丽  胡良根
作者单位:宁波大学理学院,浙江宁波,315211
基金项目:宁波市自然科学基金,宁波大学学科项目,宁波大学研究生科研创新基金
摘    要:研究具有变时滞r(t)的非线性随机积分一微分方程 dx(t)=-(∫t-r(t)a(t,s)f(x(s)))dsdt+g(t,x(t))dB(t),t≥0的解的稳定性问题,其中在X=0的某邻域内满足xg(·,x)〉0(x≠0).不仅使用不动点定理给出了方程解的均方渐近稳定的充分必要条件,同时给出了一个例子说明了主要结果.

关 键 词:随机积分一微分方程  不动点定理  均方  渐近稳定  变时滞

Solution Stability for a Class of Integral-differential Equations
CHEN Li,HU Liang-gen.Solution Stability for a Class of Integral-differential Equations[J].Journal of Ningbo University(Natural Science and Engineering Edition),2011,24(4):36-40.
Authors:CHEN Li  HU Liang-gen
Institution:CHEN Li,HU Liang-gen(Faculty of Science,Ningbo University,Ningbo 315211,China)
Abstract:In this paper, the authors investigate the solution stability issues concerning nonlinear stochastic integral-differential equations given as dx(t)=-(∫t-r(t)a(t,s)f(x(s)))dsdt+g(t,x(t))dB(t),t≥0 with variable delay r(t), where xg(.,x) 〉 0(x ≠0) in a neighborhood of x = 0. Using the fixed point theorem, the sufficient and necessary conditions are given to ensure the solution of stochastic integral-differential equation to be mean square asymptotically stable. Meanwhile, one example is offered to help explain the obtained results.
Keywords:Stochastic integral-differential equation  fixed point theory  mean square  asymptotically stable  variable delay
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