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ON A CLASS OF ANALYTIC FUNCTIONS RELATED TO CONIC DOMAINS AND ASSOCIATED WITH CARLSON-SHAFFER OPERATOR 被引量:4
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作者 S.Hussain j.sokól 《Acta Mathematica Scientia》 SCIE CSCD 2012年第4期1399-1407,共9页
Making use of the Carlson-Shaffer convolution operator, we introduce and study a new class of analytic functions related to conic domains. The main object of this paper is to investigate inclusion relations, coefficie... Making use of the Carlson-Shaffer convolution operator, we introduce and study a new class of analytic functions related to conic domains. The main object of this paper is to investigate inclusion relations, coefficient bound for this class. We also show that this class is closed under convolution with a convex function. Some applications are also discussed. 展开更多
关键词 Hadamard product (or convolution) differential subordination Carlson-Shaffer operator k-starlike functions k-uniformly convex function
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ON CERTAIN CLASS OF MEROMORPHIC FUNCTIONS WITH POSITIVE COEFFICIENTS
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作者 j.Dziok G.Murugusundaramoorthy j.sokól 《Acta Mathematica Scientia》 SCIE CSCD 2012年第4期1376-1390,共15页
In the present investigation we define a new class of meromorphic functions on the punctured unit disk A△^* := {z ∈ C : 0 〈 |z| 〈 1} by making use of the generalized Dziok-Srivastava operator Hm^l [α1]. Coef... In the present investigation we define a new class of meromorphic functions on the punctured unit disk A△^* := {z ∈ C : 0 〈 |z| 〈 1} by making use of the generalized Dziok-Srivastava operator Hm^l [α1]. Coefficient inequalities, growth and distortion inequalities, 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. 展开更多
关键词 meromorphic functions starlike function CONVOLUTION positive coefficients coefficient inequalities Dziok-Srivastava operator
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