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一类高阶线性微分方程解的增长性
On the Growth of Solutions of Some Higher Order Linear Differential Equations
【摘要】 利用亏值研究了下列高阶线性微分方程解的增长性f(k)+Ak-1(z)f(k-1)+…+A1(z)f′+A0(z)f=0,其中Aj(z)(j=0,1,…,k-1)是整函数,并且获得了一些比先前更广泛的结果.更进一步,如果方程的解f((?)0)为无穷级时,获得了f的超级的下界估计.
【Abstract】 In this paper,we shall involve the deficient value in investigating the growth of solutions of the linear differential equation f(k)+Ak-1(z)f(k-1)+…+A1(z)f’+A0(z)f=0, where Aj(z)(j=0.1,…,k-1) are entire functions,and we obtain some results which improves some earlier results.More specifically,we estimate the lower bounded of hyper-order of solutions of the equation if every solution f((?) 0) of the equation is of infinite order.
【关键词】 复微分方程;
整函数;
亏值;
超级;
【Key words】 Complex differential equations; Entire function; Deficient value; Hyper-order;
【Key words】 Complex differential equations; Entire function; Deficient value; Hyper-order;
【基金】 国家自然科学基金(11171080);贵州省科学技术基金(黔科合J字LKS[2010]07)资助
- 【文献出处】 数学物理学报 ,Acta Mathematica Scientia , 编辑部邮箱 ,2013年03期
- 【分类号】O175
- 【被引频次】8
- 【下载频次】84