由α次的殆β型螺形映照的定义,分别给出推广的Roper-Suffridge算子在Reinhardt域上和复Hilbert空间中的单位球上保持α次的殆β型螺形性.
This paper, by the definition of almost spirallike mappings of type β(β∈(-π/2,π/2))and orderα(α∈[0,1)) , discusses the generalized Roper-Suffridge extension operator which preserves almost spirallikeness of type β and order α on Reinhardt domains in C^n and the unit ball in complex Hilbert spaces, respectively.