Results 51 to 60 of about 590 (89)
Bounds on the Third Order Hankel Determinant for Certain Subclasses of Analytic Functions
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017 Let A be the class of analytic functions f(z) in the unit disc ∆ = {z ∈ C : |z| < 1g with the Taylor series expansion about the origin given by f(z) = z+ ∑n=2∞ anzn, z ∈∆ : The focus of this paper is on deriving upper bounds for the third order Hankel ...
Vijayalakshmi S.P. +3 more
doaj +1 more source
On harmonic Bloch-type mappings
, 2016 Let $f$ be a complex-valued harmonic mapping defined in the unit disk $\mathbb D$. We introduce the following notion: we say that $f$ is a Bloch-type function if its Jacobian satisfies $$ \sup_{z\in\mathbb D}(1-|z|^2)\sqrt{|J_f(z)|}0$ and a univalent ...
Efraimidis, I. +3 more
core +1 more source
Hardy spaces and unbounded quasidisks
, 2010 We study the maximal number $0\le h\le+\infty$ for a given plane domain $\Omega$ such that $f\in H^p$ whenever ...
Kim, Yong Chan, Sugawa, Toshiyuki
core +1 more source
Classes of analytic functions related to a combination of two convex functions
, 2017 In the paper we introduce classes of functions related to a class of linear combinations of two convex functions. By using properties of multivalent prestarlike functions we obtain various inclusion relationships between defined classes of functions ...
J. Dziok, K. Noor
semanticscholar +1 more source
A note on de Branges' weights [PDF]
, 2005 We discuss the de Branges weight systems and give a counterexample uncovering ...
Grinshpan, Anatolii +1 more
core
On products of multivalent close-to-star functions
, 2015 In the present paper we define a class of products of multivalent close-to-starfunctions and determine the set of pairs , , such that every function from the class maps thedisk onto a domain starlike with respect to theorigin.
Muhammad Arif +3 more
semanticscholar +1 more source
A Certain Subclass of Multivalent Analytic Functions with Negative Coefficients for Operator on Hilbert Space [PDF]
, 2015 By making use of the operators on Hilbert space, we introduce and studya subclass Ak of multivalent analytic functions with negative coecients.
Wanas, A. K. (Abbas)
core
Estimates of logarithmic coefficients of univalent functions
, 1992 International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 2, Page 311-318, 1993.
Stephen M. Zemyan
wiley +1 more source
On a subclass of multivalent functions defined by generalized multiplier transformation
Open MathematicsThe objective of this study is to establish a novel category of multivalent analytic functions by utilizing generalized multiplier transformations. The subclass is further examined for coefficient estimations, growth and distortion theorems, extreme ...
Alharayzeh Ma’moun I. Y.
doaj +1 more source
Diameter problems for univalent functions with quasiconformal extension
, 1992 International Journal of Mathematics and Mathematical Sciences, Volume 16, Issue 4, Page 679-686, 1993.
Paul Deiermann
wiley +1 more source