نتایج جستجو برای: meromorphically multivalent functions

تعداد نتایج: 494383  

Journal: :bulletin of the iranian mathematical society 2013
j.-l. liu

making use of an extended fractional differintegral operator ( introduced recently by patel and mishra), we introduce a new subclass of multivalent analytic functions and investigate certain interesting properties of this subclass.

Journal: :Applied Mathematics and Computation 2013
Lei Shi Jing-Ping Yi Zhi-Gang Wang

In this paper we introduce and investigate a certain subclass of functions which are analytic in the punctured unit disk and meromorphically close-to-convex. The sub-ordination property, inclusion relationship, coefficient inequalities, distortion theorem and a sufficient condition for our subclass of functions are derived. The results presented here would provide extensions of those given in e...

2012
R. K. RAINA S. P. GOYAL ONKAR SINGH

Abstract. In this paper we introduce a new subclass Mp(n, α, c) of analytic and multivalent functions in the unit disk which includes the class Sp(n, α) of multivalent starlike functions of order α and the class Tp(n,α) of multivalent convex functions of order α . Using generalized Bernardi Libera integral operator and Hölder’s inequality, some interesting properties of convolution for the clas...

2013
Elif Yaşar Sibel Yalçın Hari M Srivastava

*Correspondence: [email protected] Department of Mathematics, Faculty of Arts and Science, Uludag University, Bursa, 16059, Turkey Abstract We introduce a certain subclass of harmonic multivalent functions defined by using a Ruscheweyh derivative operator. We obtain coefficient conditions, distortion bounds, extreme points, convex combination for the above class of harmonic multivalent fu...

Journal: :Annales Polonici Mathematici 1994

Journal: :Int. J. Math. Mathematical Sciences 2007
Mamoru Nunokawa Shigeyoshi Owa Tadayuki Sekine Rikuo Yamakawa Hitoshi Saitoh Junichi Nishiwaki

Let ᏿ * (p,α) be the class of functions f (z) which are analytic and p-valently starlike of order α in the open unit disk E. The object of the present paper is to derive an interesting condition for f (z) to be in the class ᏿ * (p,α). This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution , and reproduction in any ...

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