Meromorphic Convex Functions with Negative Coefficients

被引：0
|
作者：
B.A.Uralegaddi
M.D.Ganigi
机构：
[1] Department of Mathematics Karnatak University Dharwad-580 003. INDIA
[2] Department of Mathematics Karnatak Arts College
[3] Dharwad-580 001 INDIA
来源：
数学研究与评论 | 1987年 / 01期
关键词：
show; Meromorphic Convex Functions with Negative Coefficients;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Let σ（a） be the class of functions f（f）=1/z-sur from n=1 to ∞（|a|z）, regular in the punctured disk E={z:0<|z|<1} and satisfying Re(1+zf"（z）/f’（z）)<-a （0≤a<1） for z∈E. In this paper we obtain coefficient inequalities, distortion and closure Theorems for the class σ（a）. Further we obtain the class preserving integral operator of the form
引用
收藏
页码：21 / 26
页数：6
相关论文
共 50 条
  • [1] MEROMORPHIC CLOSE-TO-CONVEX FUNCTIONS WITH ALTERNATING COEFFICIENTS
    Aouf, M. K.
    Al-Oboudi, F. M.
    Hadain, M. M.
    COMMUNICATIONS FACULTY OF SCIENCES UNIVERSITY OF ANKARA-SERIES A1 MATHEMATICS AND STATISTICS, 2005, 54 (01): : 9 - 14
  • [2] On a subclass of certain convex functions with negative coefficients
    Kamali, M
    Akbulut, S
    APPLIED MATHEMATICS AND COMPUTATION, 2003, 145 (2-3) : 341 - 350
  • [3] Meromorphic p-valent starlike functions with negative coefficients
    Darwish, HE
    INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 2002, 33 (07): : 967 - 976
  • [4] THE COEFFICIENTS OF MEROMORPHIC FUNCTIONS
    UMEZAWA, T
    DUKE MATHEMATICAL JOURNAL, 1954, 21 (02) : 355 - 361
  • [5] On meromorphic starlike and convex functions
    Nunokawa, M
    Ahuja, OP
    INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 2001, 32 (07): : 1027 - 1032
  • [6] CLASSES OF MEROMORPHIC α-CONVEX FUNCTIONS
    Ali, Rosihan M.
    Ravichandran, V.
    TAIWANESE JOURNAL OF MATHEMATICS, 2010, 14 (04): : 1479 - 1490
  • [7] On a Subclass of Close-to-Convex Functions with Negative Coefficients
    Arabian J Sci Eng, 1-A (61):
  • [8] On Certain Multivalent Starlike or Convex Functions with Negative Coefficients
    Uyanik, Neslihan
    Deniz, Erhan
    Kadioglu, Ekrem
    Owa, Shigeyoshi
    JOURNAL OF INEQUALITIES AND APPLICATIONS, 2010,
  • [9] On Certain Multivalent Starlike or Convex Functions with Negative Coefficients
    Neslihan Uyanik
    Erhan Deniz
    Ekrem Kadioǧlu
    Shigeyoshi Owa
    Journal of Inequalities and Applications, 2010
  • [10] CONVEX AND STARLIKE MEROMORPHIC FUNCTIONS
    MILLER, J
    PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY, 1980, 80 (04) : 607 - 613
12345