THE INVARIANCE OF STRONG AND ALMOST SPIRALLIKE MAPPINGS OF TYPE β AND ORDER α

• 作 者: 崔艳艳 王朝君 刘浩
• 机 构: CollegeofMathematicsandStatistics,CollegeofMathematicsandInformationScience
• 出 处: 数学物理学报：B辑英文版
• 发表日期: 2015年6期
• 关键词: 螺形映照 变性 β型 最大模原理 全纯函数 单位球 算子 广义 strong and almost spirallike mappings of type β
• 基金项目: This work is supported by NSF of China （11271359, U1204618）, and Science and Technology Research Projects of Henan Provincial Education Department （14B110015, 14B110016）.

The invariance of strong and almost spirallike mappings of type β and order α is discussed in this paper.From the maximum modulus principle of holomorphic functions,we obtain that the generalized Roper-Suffridge operators preserve strong and almost spiral