Results 41 to 50 of about 14,928,699 (320)
Tsukuba Journal of Mathematics, 1991 In this article the authors proved that if p is analytic in the unit disc \(\Delta\), \(p(0)=1\) then \[ (*)\;| p(z)+zp'(z)-1|
Nunokawa, Mamoru +2 more
openaire +3 more sources
Simple sufficient conditions for starlikeness and convexity for meromorphic functions
Open Mathematics, 2016 In this paper we investigate some extensions of sufficient conditions for meromorphic multivalent functions in the open unit disk to be meromorphic multivalent starlike and convex of order α.
Goswami Pranay +2 more
doaj +1 more source
Generalized Schur Functions as Multivalent Functions
Complex Analysis and Operator Theory, 2021 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +4 more sources
Some New Sufficient Conditions on p-Valency for Certain Analytic Functions
Axioms, 2023 In the present paper, we develop some implications leading to Carathéodory functions in the open disk and provide some new conditions for functions to be p-valent functions. This work also extends the findings of Nunokawa and others.
Lei Shi +3 more
doaj +1 more source
On a new subclass of Ruscheweyh-type harmonic multivalent functions [PDF]
, 2013 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 ...
core +1 more source
Multivalent functions and QK spaces
International Journal of Mathematics and Mathematical Sciences, 2004 We give a criterion for q-valent analytic functions in the unit disk to belong to QK, a Möbius-invariant space of functions analytic in the unit disk in the plane for a nondecreasing function K:[0,∞)→[0,∞), and we show by an example that our condition is
Hasi Wulan
doaj +1 more source
Fractal and Fractional, 2019 In the present research paper, our aim is to introduce a new subfamily of p-valent (multivalent) functions of reciprocal order. We investigate sufficiency criterion for such defined family.
Shahid Mahmood +4 more
doaj +1 more source
On a Subclass of Meromorphic Multivalent Functions [PDF]
, 2015 . 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 ...
HadiAbd, Enaam +3 more
core +1 more source
Families of Meromorphic Multivalent Functions Associated with the Dziok-Raina Operator
International Journal of Analysis and Applications, 2013 Making use a linear operator, which is defined here by means of the Hadamard product (or convolution), involving the Wright’s generalized hypergeometric function , we introduce two novel subclassesP p(q,s,α1;A,B,λ) andP+p(q,s,α1;A,B,λ) of meromorphically
G. Murugusundaramoorthy, M.K. Aouf
doaj +2 more sources
Some Applications of a New Integral Operator in q-Analog for Multivalent Functions
Mathematics, 2019 This paper introduces a new integral operator in q-analog for multivalent functions. Using as an application of this operator, we study a novel class of multivalent functions and define them. Furthermore, we present many new properties of these functions.
Q. Khan +6 more
semanticscholar +1 more source