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一类时标动态方程的极限圆型判定准则及应用
引用本文:张彬,杜秀华,郑召文.一类时标动态方程的极限圆型判定准则及应用[J].曲阜师范大学学报,2009,35(2):6-10.
作者姓名:张彬  杜秀华  郑召文
作者单位:张彬,郑召文,ZHANG Bin,ZHENG Zhao-wen(曲阜师范大学数学科学学院,273165,曲阜市);杜秀华,DU Xiu-hua(高密市周阳小学,261500,山东省潍坊市)  
摘    要:在时间刻度T(inf T=0∈T,sup T=∞)上讨论了二阶动态方程p(t)y^△]^△+q(t)y^σ=0在特定条件(p(t)=p(t)/-α(t),q(t)^-p(t)-p^-△(t),α(t)为回归函数,p^-(t)≠0,p^-(t)∈Crd(T))下解的有界性以及极限圆型判定,并在此基础上得到了极限圆型判定的充要条件.

关 键 词:时标  动态方程  极限圆

The Limit Circle Criteria for a Class of Dynamic Equations on Time Scales with Application
ZHANG Bin,DU Xiu-hua,ZHENG Zhao-wen.The Limit Circle Criteria for a Class of Dynamic Equations on Time Scales with Application[J].Journal of Qufu Normal University(Natural Science),2009,35(2):6-10.
Authors:ZHANG Bin  DU Xiu-hua  ZHENG Zhao-wen
Institution:ZHANG Bin, DU Xiu-hua, ZHENG Zhao-wen (1. School of Mathematical Sciences,Qufu Normal University,273165, Qufu; 2. Gaomi Zhouyang Primary School, 261500, Weifang, Shandong, PRC)
Abstract:In this paper, based on the time scales T( inf T = 0, sup T = ∞ ), the second-order dynamic equation p(t)y^△]^△+q(t)y^σ=0 is investigated. With the conditions of p(t) = p^-(t)/-α(t), q(t) =α(t)p^-(t) -p^-△(t) α(t) being regressive, p^-(t) ≠0 and p(t) ^- Crd(T), the boundedness of the solutions and the limit circle criteria of the second-order dynamic equation are considered, a sufficient and necessary condition of the limit circle case for the symmetric differential expression L(y) = - p(t)y^△]^△ + q(t)y^σ is given.
Keywords:time scales  dynamic equations  limit circle  
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