关于亚纯函数的奇异方向

ON THE SINGULAR DIRECTION OF MEROMORPHIC FUNCTION

作者曾给出一亚纯函数族涉及微分多项式具有重值情况下的正规定则，现在证明相应的奇异方向存在，由此推广了杨乐和张庆德关于“亚纯函数及其导数的幅角分布”一文中的结果．

The author in earlier papers obtained a norrnal rule,by which the meromorphic functionas multiple velues when involving differentia polynomials.The present paper proves the existence of the sin-gulra direction of meromorphic function corresponding to the normal rule,thus extending the research resultsof Yang Lo and Zhang Qingde.