数学物理学报(英文版) ›› 2012, Vol. 32 ›› Issue (4): 1376-1390.doi: 10.1016/S0252-9602(12)60106-4

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ON CERTAIN CLASS OF MEROMORPHIC FUNCTIONS WITH POSITIVE COEFFICIENTS

J. DZIOK1, G. MURUGISUNDARAMOORTHY2, J. SOKÓL3*   

  1. 1.Department of Mathematics, Institute of Mathematics, University of Rzesz´ow, ul. Rejtana 16A, 35-310 Rzesz´ow, Poland|2.School of Advanced Sciences, VIT University, Vellore - 632014, India|3.Department of Mathematics, Rzesz´ow University of Technology, ul. W. Pola 2, 35-959 Rzesz´ow, Poland
  • 收稿日期:2010-12-27 修回日期:2011-06-23 出版日期:2012-07-20 发布日期:2012-07-20
  • 通讯作者: J. SOKóL,jsokol@prz.edu.pl E-mail:jdziok@univ.rzeszow.pl; gmsmoorthy@yahoo.com; jsokol@prz.edu.pl

ON CERTAIN CLASS OF MEROMORPHIC FUNCTIONS WITH POSITIVE COEFFICIENTS

J. DZIOK1, G. MURUGISUNDARAMOORTHY2, J. SOKÓL3*   

  1. 1.Department of Mathematics, Institute of Mathematics, University of Rzesz´ow, ul. Rejtana 16A, 35-310 Rzesz´ow, Poland|2.School of Advanced Sciences, VIT University, Vellore - 632014, India|3.Department of Mathematics, Rzesz´ow University of Technology, ul. W. Pola 2, 35-959 Rzesz´ow, Poland
  • Received:2010-12-27 Revised:2011-06-23 Online:2012-07-20 Published:2012-07-20
  • Contact: J. SOKóL,jsokol@prz.edu.pl E-mail:jdziok@univ.rzeszow.pl; gmsmoorthy@yahoo.com; jsokol@prz.edu.pl

摘要:

In the present investigation we define a new class of meromorphic functions on the punctured unit disk Δ* := {z ∈C : 0 < |z| < 1} by making use of the generalized Dziok–Srivastava operator Hl m[α1]. Coefficient inequalities, growth and distortion inequal-ities, as well as closure results are obtained. We also establish some results concerning the partial sums of meromorphic functions and neighborhood results for functions in new class.

关键词: meromorphic functions, starlike function, convolution, positive coefficients, coefficient inequalities, Dziok-Srivastava operator

Abstract:

In the present investigation we define a new class of meromorphic functions on the punctured unit disk Δ* := {z ∈C : 0 < |z| < 1} by making use of the generalized Dziok–Srivastava operator Hl m[α1]. Coefficient inequalities, growth and distortion inequal-ities, as well as closure results are obtained. We also establish some results concerning the partial sums of meromorphic functions and neighborhood results for functions in new class.

Key words: meromorphic functions, starlike function, convolution, positive coefficients, coefficient inequalities, Dziok-Srivastava operator

中图分类号: 

  • 30C50