ON THE GROWTH OF SOLUTIONS OF A CLASS OF HIGHER ORDER DIFFERENTIAL EQUATIONS

In this paper, authors investigate the order of growth and the hyper order of solutions of a class of the higher order linear differential equation, and improve results of M. Ozawa^[6], G. Gundersen^[7] and J.K. Langley^[8], Li Chun-hong^[11].     

ON THE GROWTH OF SOLUTIONS OF A CLASS OF HIGHER ORDER DIFFERENTIAL EQUATION

In this paper, a class of higher order linear differential equation is investigated. The order and the hyper-order of the solutions of the equation are exactly estimated under some certain conditions.     

ON THE ITERATED ORDER OF MEROMORPHIC SOLUTIONS OF HIGHER ORDER LINEAR DIFFERENTIAL EQUATIONS

In this paper, we investigate complex homogeneous and non-homogeneous higher order linear differential equations with meromorphic coefficients. We obtain several results concerning the iterated order of meromorphic solutions, and the iterated convergence exponent of the zeros of meromorphic solutions.     

ON THE DEPENDENT PROPERTY OF SOLUTIONS FOR HIGHER ORDER PERIODIC DIFFERENTIAL EQUATIONS

This article investigates the property of linearly dependence of solutions f(z) and f(z 2πi)for higher order linear differential equations with entire periodic coefficients.     

ON THE HYPER-ORDER OF MEROMORPHIC SOLUTIONS OF LINEAR DIFFERENTIAL EQUATIONS

In this paper the order and the hyper-order of the solutions of higher-order homoge-neous linear differential equations is investigated.     

ON THE GROWTH OF THE SOLUTIONS FOR 1ST KIND OF HIGHER ORDER DIFFERENTIAL EQUATIONS IN THE UNIT DISC

In this paper, we study the growth of the solutions for 1st kind of differential equations of higher order in the unit disc. We give a sufficient condition for all solutions of second order linear differential equation to be inadmissible and a sufficient condition for all solutions of higher order linear differential equation to be of infinite order.     

ON OSCILLATION THEOREMS. FOR HIGHER ORDER DIFFERENTIAL EQUATIONS

In this paper,we investigate the complex oscillation of the differential equation f^(k) Ak-1f^(k-1)… A1f^1 A0f=F(x) where Af(j=0,…,k-1)F 0 are finite order entire functions. And we give precise estimates of the exponent of convergence of the zero-sequence of solutions for the above equation under some additional hypotheses.     

ON NONOSCILLATORY SOLUTIONS OF HIGHER ORDER NONLINEAR FUNCTIONAL DIFFERENTIAL SYSTEMS

In this paper necessary and sufficient conditions for the existence of no noscillatory solutions of a class of higher order nonlinear functional differential systems are obtained.     

ON THE EXISTENCE OF ALMOST PERIODIC SOLUTIONS OF SOME DELAY DIFFERENTIAL EQUATIONS

By means of exponential dichotomy, this paper investigates the existence of almost periodic solutions of some delay differential equations.     

POSITIVE SOLUTIONS OF HIGHER ORDER SUBLINEAR FUNCTIONAL DIFFERENTIAL EQUATIONS

In this paper, we discuss higher order sublinear functional differential equation x~(n)(t)+p(t)x~v(g(t))=0 t≥t_o where andSome necessary and sufficient conditions for existence of positive solution of the equation are established.     

一类二阶线性微分方程解的增长性

本文研究一类二阶齐次线性微分方程f\"+A_1(z)e~(P(z))f'+A_0(z)e~(Q(z))f=0,解的增长性,其中P(z)=az~n,Q(z)=bz~n,ab≠0,a=cb(c1),A_j(z)(j=0,1)是非零多项式,证明了该方程的每个非零解满足σ(f)=∞并且σ_2(f)=n.     

关于高阶整函数系数微分方程解的增长性的进一步结果

本文研究一类高阶整函数系数微分方程的增长性问题，当存在某个系数对方程的解的性质起主要支配作用时，得到了齐次与非齐次方程解的超级的精确估计及方程的解与小函数的关系。     

单位圆内解析系数的高阶齐次线性微分方程解与小函数的关系

本文对系数为单位圆内的解析函数的某类高阶齐次线性微分方程解的性质进行研究,得到解的增长级和超级的精确估计以及解与小函数之间的关系.     

Composition of entire functions with finite iterated order

In this paper, we investigate the growth of two composite entire functions of finite iterated order and a series of comparative growths of logp+qT(r,f(g)) (p,q∈N) with logpT(r,f) and logqT(r,g). At the end of this paper, we apply some growth results into the factorization of the solutions of linear differential equation. We achieve some results which are the improvements and extensions of the previous results.     

On the growth of solutions of a class of higher order linear differential equations with coefficients having the same order

In this paper, the authors investigate the growth of solutions of a class of higher order linear differential equations

f(k)+Ak−1f(k−1)+?+A₀f=0     

Value sharing and differential equations

Suppose that f is a nonconstant entire function and L[f] a linear differential polynomial in f with constant coefficients. In this paper, by considering the existence of the solutions of some differential equations, we find all the forms of entire functions f in most cases when f and L[f] share two values counting multiplicities jointly. This result generalize some known results due to Rubel–Yang and Li–Yang.     

一类高阶微分方程解的增长性

本文研究了微分方程f^（k）＋Ak（z）e^ακ-^12f^（κ-1）,…,＋A0（z）e^a0z=0的增长性,其中Aj（z）（j=0,1…κ-1）是整函数,其级小于1．在αj（j=0,1,…,κ-1）满足某条件下,得到该方程的任一超越解的超级等于1的结论．     

一类二阶微分方程的解和小函数的关系

在文中研究了一类二阶线性微分方程的解以及它们的一阶,二阶导数,微分多项式与小函数之间的关系．     

On the Hyper-Order of Solutions of Some Second-Order Linear Differential Equations

In this paper, we investigate the growth of solutions of the second-order linear homogeneous differential equations with entire coefficients of the same order, and obtain precise estimates of the hyper-order of their solutions. Received November 15, 1999, Accepted May 10, 2000     

高阶线性微分方程解的二阶导数的不动点

研究了以整函数为系数的高阶线性微分方程解的二阶导数的不动点,得到的两个结果推广了一些相关结论.