一类中立型积分微分方程概周期解的存在性和唯一性 |
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引用本文: | 林远华,;冯春华.一类中立型积分微分方程概周期解的存在性和唯一性[J].河池师专学报,2008(5):21-25. |
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作者姓名: | 林远华 ;冯春华 |
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作者单位: | [1]河池学院数学系,广西宜州546300; [2]广西师范大学数学科学学院,广西桂林541004 |
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基金项目: | 广西教育厅科研基金资助项目(编号:200708LX163);河池学院应用数学重点学科资助项目(院科研[2007]2号). |
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摘 要: | 考虑具连续时滞和离散时滞的中立型积分微分方程d/dtx(t)+^q∑j=1 ej(t)x(t-δj(t))]=A(t)x(t)+^t∫-∞C(t,s)x(s)ds+^p∑i=1gi(t,x(t-τi(t)))+b(t)概周期解的存在性和唯一性问题.利用线性系统指数型二分性理论和压缩映射原理,获得了保证中立型系统概周期解存在性和唯一性的一组充分条件,推广了相关文献的主要结果.
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关 键 词: | 时滞 概周期解 指数型二分性 |
ON the Existence and Uniqueness of Almost Periodic Solutions of a Kind of Neutral Integro -differential Equtions |
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Institution: | LIN Yuan-hua, FENG Chun-hua ( 1. Department of Mathematics, Hechi University, Yizhou, Guangxi 546300 ; 2.School of Mathematical Science, Guangxi Normal University, Guilin, Guangxi 541004, China) |
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Abstract: | The existence and uniqueness of almost periodic solutions of neutral integro - differential equations with both continuous and discrete delays of the formd/dtx(t)+^q∑j=1 ej(t)x(t-δj(t))]=A(t)x(t)+^t∫-∞C(t,s)x(s)ds+^p∑i=1gi(t,x(t-τi(t)))+b(t)are dealt with by combining the theory of exponential dichotomies of linear system and fixed point theorem, a set of sufficient conditions that guarantee the existence and uniqueness of almost periodic solutions of the system are ob- tained. Thus the conclusions made in the relevant documents are extended. |
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Keywords: | delay almost periodic solution exponential dichotomies |
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