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一类非自治中立型方程非振动解的渐近性

Asymptotic behavior of the nonoscillating solutions for a class of nonautonomous neutral equations
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摘要 考虑了一类非自治中立型方程ddtx(t)-∑i=1pi(t)x(t-τi)+q(t)x(t)+∫α(t)0x(t-s)dr(t,s)=0非振动解的渐近性,其中pi(t)(i=1,2,…,n),q(t)是非负函数,积分是Riemann-Stieltjes意义下的积分。在函数α(t),r(t,s),pi(t)(i=1,2,…,n)和q(t)满足一定的条件下,得到了该方程的每个非振动解是最终无界的渐近性结果。该结论改进和推广了相关文献的某些已知结果。 This paper considers the asymptotic behavior of the nonoscillating solutions for a class of nonautonomous neutral equations d/dt[x(t)-∑i-1^Npi(t)x(t-τ1)]+q(t)x(t)+∫∞^a(r)x(t-s)dr(t,x)=0where pi(t)(i=1,2,…n),q(t) are nonnegative functions,and the integral in the above equations isin the sense of Riemann-Stieltjes. The asymptotic behavior results of each nonoscillating solution for this kind of equations are obtained when a(t),r(t,s), pi(t) (i= 1,2,…,n) and q(t) satisfy some adequate conditions. The results improve and generalize some known results in the related literature.
作者 周轩伟
出处 《成都理工大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第5期546-550,共5页 Journal of Chengdu University of Technology: Science & Technology Edition
基金 国家自然科学基金资助(70071026) 浙江省教育厅科研计划项目(20030539)
关键词 非自治 中立型 非振动解 渐近性 nonautonomous neutral equation nonoscillating solution asymptotic behavior
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参考文献10

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