Results 21 to 30 of about 642 (133)
On a class of meromorphic p-valent starlike functions involving certain linear operators
International Journal of Mathematics and Mathematical Sciences, 2002 Let ∑p be the class of functions f(z) which are analytic in the punctured disk 𝔼*={z∈ℂ ...
Jin-Lin Liu, Shigeyoshi Owa
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On some classes of meromorphic functions defined by subordination and superordination [PDF]
Opuscula Mathematica, 2011 Let \(p\in \mathbb{N}^*\) and \(\beta,\gamma\in \mathbb{C}\) with \(\beta\neq 0\) and let \(\Sigma_p\) denote the class of meromorphic functions of the form \(g(z)=\frac{a_{-p}}{z^p}+a_0+a_1 z+\ldots,\,z\in \dot U\), \(a_{-p}\neq 0\).
Alina Totoi
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Geometric Properties of Meromorphic Functions Involving Convolution Operator
Al-Mustansiriyah Journal of Science, 2022 We introduce and study a subclass of meromorphic univalent functions with positive coefficients defined by a novel operator and obtain coefficient estimates, closure theorems, convolution properties, partial sums, and δ- neighborhood for the class .
Ismael Ibrahim Hameed +1 more
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New Criteria for Meromorphic Starlikeness and Close-to-Convexity
Mathematics, 2020 The main purpose of current paper is to obtain some new criteria for meromorphic strongly starlike functions of order α and strongly close-to-convexity of order α .
Ali Ebadian +3 more
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Weakly Starlike Meromorphic Univalent Functions. II [PDF]
Proceedings of the American Mathematical Society, 1977 A function f ( z ) f(z) is said to be meromorphic weakly starlike if it has the form f ( z ) = − ρ z F ( Z ) / ( z − ρ ) ( 1 − ρ z )
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STARLIKENESS OF MULTIVALENT MEROMORPHIC HARMONIC FUNCTIONS [PDF]
Bulletin of the Korean Mathematical Society, 2003 The geometric function theory of analytic functions has a century of development, but that of harmonic mappings is still rather young. This paper is concerned with a very special subclass of harmonic mappings and the adaptation of classical methods to this class.
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A certain subclass of meromorphically q-starlike functions associated with the Janowski functions
Journal of Inequalities and Applications, 2019 In this paper, the authors introduce a new subclass of meromorphic q-starlike functions which are associated with the Janowski functions. A characterization of meromorphically q-starlike functions associated with the Janowski functions has been obtained ...
Shahid Mahmood +5 more
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Journal of Mathematical Analysis and Applications, 2001 Let \(\mu\) denote the class of functions \(f(z)={1\over z}+ \sum^\infty_{n=1} a_nz^n\) analytic and univalent in the punctured unit disk \(\Delta\setminus\{0\}\). If \(f\in\mu\) and \(\sum^\infty_{n=1} n|a_n|\leq 1\), then \(f\) is meromorphically starlike (that means that \(\text{Re }zf'(z)/f(z)< 0\) \((z\in\Delta\setminus\{0\})\)).
Zou, Zhong-Zhu, Wu, Zhuo-Ren
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Maximal area integral problem for certain class of univalent analytic functions [PDF]
, 2014 One of the classical problems concerns the class of analytic functions $f$ on the open unit disk $|z|
Lal Sharma +3 more
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Some applications of q-difference operator involving a family of meromorphic harmonic functions
Advances in Difference Equations, 2021 In this paper, we establish certain new subclasses of meromorphic harmonic functions using the principles of q-derivative operator. We obtain new criteria of sense preserving and univalency.
Neelam Khan +4 more
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