頁籤選單縮合
| 題 名 | On Two Generalized Classes of Analytic Functions with Negative Coefficients |
|---|---|
| 作 者 | Sudharasan,T. V.; Subramanian,K. G.; Balasubrahmanyam,P.; | 書刊名 | 東吳數理學報 |
| 卷 期 | 25:1 1999.01[民88.01] |
| 頁 次 | 頁11-17 |
| 分類號 | 314.5 |
| 關鍵詞 | |
| 語 文 | 英文(English) |
| 英文摘要 | Let S(a) denote the class of analytic functions of the form f(Z) = (a1z- Σ anz �c (a1>/1, an>/0,│�閒y < π /2) where e f(zo) = zo(l-a1+ ) for 0 <zo <1. Let S( ��, �� ) and T (��, ��) respectively denote the subclasses of S(��) consisting of functions f(z) which satisfy Re{e f(z) ╱ z > �� and Re{e f'(z)} > �� (0 < �� cos �� ) for │z▕ < 1. In this paper we determine coefficient estimates and obtain comparable results for f(z) in the classes S(��, ��) and T( ��, �� ). Also the radius of convexity for functions in T (��,��) and radius ofstarlikeness for functions in S (��, ��) are found. |
本系統中英文摘要資訊取自各篇刊載內容。