摘要
得到了β≥0时,S*k(A,B)的β凸半径,建立了Pk(A,B)的一个极值定理,应用此极值定理,得到β<0且满足一定条件时,S*k(A,B)的β凸半径,推广了V.V.Anh等人的结论.
The β convexity radius of S k(A,B) are obtained in the case β ≥0,and a extreme value theorem is also established.By this extreme value theorem,the β convexity radius of S k (A,B) are also obtained in the case β <0,satisfying certain conditions.The results of V.V.Anh and others are generalized.
出处
《陕西师范大学学报(自然科学版)》
CAS
CSCD
北大核心
1998年第S1期36-40,共5页
Journal of Shaanxi Normal University:Natural Science Edition
关键词
从属函数
星形函数
β凸半径
subordinate function
starlike function
β convexity radius