نتایج جستجو برای: meromorphic starlike function

تعداد نتایج: 1215804  

Journal: :Rocky Mountain Journal of Mathematics 1981

2008
M. K. AOUF G. Kohr

In this paper, we establish some results concerning the Hadamard product of certain meromorphic p-valent starlike and meromorphic p-valent convex functions analogous to those obtained by Vinod Kumar (J. Math. Anal. Appl. 113(1986), 230-234) and M. L. Mogra (Tamkang J. Math. 25(1994), no. 2, 157-162).

Journal: :Applied Mathematics and Computation 2010
R. Chandrashekar Rosihan M. Ali See Keong Lee V. Ravichandran

It is well-known that the classes of starlike, convex and close-to-convex univalent functions are closed under convolution with convex functions. In this paper, closure properties under convolution of general classes of meromorphic p-valent functions that are either starlike, convex or close-to-convex with respect to n-ply symmetric, conjugate and symmetric conjugate points are investigated. 20...

2012
Imran Faisal Maslina Darus M. Darus

The object of the present paper is to investigate a family of integral operators defined on the space of meromorphic functions. By making use of these novel integral operators, we introduce and investigate several new subclasses of starlike, convex, close-to-convex, and quasiconvex meromorphic functions. In particular, we establish some inclusion relationships associated with the aforementioned...

Journal: :Int. J. Math. Mathematical Sciences 2013
Samaneh G. Hamidi Suzeini Abdul Halim Jay M. Jahangiri

License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We consider meromorphic starlike univalent functions that are also bi-starlike and find Faber polynomial coefficient estimates for these types of functions. A function is said to be bi-starlike if both the function and its inverse are starlike univalent. Consider ...

Journal: :Transactions of the American Mathematical Society 1963

Journal: :Pacific Journal of Mathematics 1963

Journal: :Bulletin of the Australian Mathematical Society 1984

2017
F. Ghanim

In this paper, we introduce a new class of analytic functions defined by a new convolution operator La (α, β). The new class of analytic functions Σ a,t α,β (ρ; h) in U ∗ = {z : 0 < |z| < 1} is defined by means of a hypergeometric function with an integral operator associated with the Hurwitz-Lerch Zeta function and differential subordination. The authors also introduces and investigates variou...

Journal: :Mathematics 2023

This article defines a new class of meromorphic parabolic starlike functions in the punctured unit disc D*={z∈C:0&lt;|z|&lt;1} that includes fixed second coefficients As,cdψ,τ,ν,η and q- hypergeometric functions. For function belonging to As,cdψ,τ,ν,η, some properties are obtained, including coefficient inequalities, closure theorems, radius convexity.

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