154 research outputs found
Certain subclasses of multivalent functions defined by new multiplier transformations
In the present paper the new multiplier transformations
\mathrm{{\mathcal{J}% }}_{p}^{\delta }(\lambda ,\mu ,l) (\delta ,l\geq
0,\;\lambda \geq \mu \geq 0;\;p\in \mathrm{% }%\mathbb{N} )} of multivalent
functions is defined. Making use of the operator two new subclasses and \textbf{\ }of multivalent analytic
functions are introduced and investigated in the open unit disk. Some
interesting relations and characteristics such as inclusion relationships,
neighborhoods, partial sums, some applications of fractional calculus and
quasi-convolution properties of functions belonging to each of these subclasses
and
are
investigated. Relevant connections of the definitions and results presented in
this paper with those obtained in several earlier works on the subject are also
pointed out
Subclasses of meromorphically multivalent functions defined by a differential operator
In this paper we introduce and study two new subclasses \Sigma_{\lambda\mu
mp}(\alpha,\beta)\Sigma^{+}_{\lambda\mu mp}(\alpha,\beta)%
(n,\delta)-$neighborhoods of analytic functions to these subclasses of
meromorphically multivalent functions
On a Subclass of Meromorphic Multivalent Functions
In this paper, we introduce a new class of meromorphic multivalent functions in the puncturedunit discU*{z∈c:0 <|z|<1} . We obtain various resultsincluding coefficients inequality, convex set, radius of starlikeness and convexity, δ-neighborhoods , arithmetic mean and extreme points
On a New Subclass of Multivalent Functions Defined by Hadamard Product
In this paper we introduce and study the class of multivalent functions in the open unit disk U= {Z c1|z|<1} which are defined by the convolution (or Hadamard product). Then we give the coefficient inequality, closure theorems, neighborhoods of theclass ,partial sums, weighted mean theorem, convolution, distortion and growth bounds
Inclusion and neighborhood properties of certain subclasses of p-valent functions of complex order defined by convolution
In this paper we introduce and investigate three new subclasses of -valent analytic functions by using the linear operator . The various results obtained here for each of these function classes include coefficient bounds, distortion inequalities and associated inclusion relations for -neighborhoods of subclasses of analytic and multivalent functions with negative coefficients, which are defined by means of a non-homogenous differential equation
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