关于二阶复微分方程f″（z）＋A（z）f（z）=0解的非实零点的研究

摘要

This paper deals with the differential equationf＇＇ ＋ A（z）f = 0 ,where A（z） is a polynomial. Some results concerning the estimates of the growth and the exponent of convergence of the nonreal zero-sequence of a solution of the equation restricted in some conditions are obtained.%考虑二阶复微分方程f″＋A（z）f=0解的非实零点的收敛指数与解的增长级之间的关系,其中A（z）是多项式,给出方程非零解的非实零点序列的收敛指数等于增长级的一个充分条件.