Results 21 to 30 of about 201 (176)

A Class of k-Symmetric Harmonic Functions Involving a Certain q-Derivative Operator

open access: yesMathematics, 2021
In this paper, we introduce a new class of harmonic univalent functions with respect to k-symmetric points by using a newly-defined q-analog of the derivative operator for complex harmonic functions.
Hari M. Srivastava   +4 more
doaj   +1 more source

Inclusion Relation between Various Subclasses of Harmonic Univalent Functions Associated with Wright’s Generalized Hypergeometric Functions

open access: yesAbstract and Applied Analysis, 2020
The purpose of the present paper is to obtain some inclusion relation between various subclasses of harmonic univalent functions by applying certain convolution operators associated with Wright’s generalized hypergeometric functions.
Rajavadivelu Themangani   +2 more
doaj   +1 more source

On Some Classes of Harmonic Functions Associated with the Janowski Function

open access: yesMathematics, 2023
In this paper, we introduce some classes of univalent harmonic functions with respect to the symmetric conjugate points by means of subordination, the analytic parts of which are reciprocal starlike (or convex) functions.
Lina Ma, Shuhai Li, Huo Tang
doaj   +1 more source

NEW CLASSES OF HARMONIC UNIVALENT FUNCTIONS

open access: yesActa Universitatis Apulensis, 2018
Summary: We define and investigate new classes of harmonic univalent functions defined by Sălăgean integral operator, denoted by \(H(m,n,\alpha,\beta)\) and \(H^-(m,n,\alpha,\beta)\). We obtain coefficient inequalities and distortion bounds for the functions in the class \(H(m,n, \alpha,\beta)\).
Sălăgean, G. Ş., Cotîrlă, L.-I.
openaire   +1 more source

A New Subclass of Harmonic Univalent Functions Associated with Dziok-Srivastava Operator

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
The purpose of the present paper is to study a certain subclass of harmonic univalent functions associated with Dziok-Srivastava operator. We obtain coefficient conditions, distortion bounds, and extreme points for the above class of harmonic univalent ...
A. L. Pathak, K. K. Dixit, R. Agarwal
doaj   +1 more source

Bohr's Phenomenon for Some Univalent Harmonic Functions

open access: yes, 2021
13 pages, 3 ...
Singla, Chinu   +2 more
openaire   +2 more sources

ON REGULARITY THEOREMS FOR LINEARLY INVARIANT FAMILIES OF HARMONIC FUNCTIONS

open access: yesПроблемы анализа, 2015
The classical theorem of growth regularity in the class S of analytic and univalent in the unit disc ∆ functions ƒ describes the growth character of different functionals of ƒ Є S and z Є ∆ as z tends to δ∆.
E. G. Ganenkova, V. V. Starkov
doaj   +1 more source

On harmonic combination of univalent functions

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 2012
10 pages.
Obradović, M., Ponnusamy, S.
openaire   +5 more sources

Halide Perovskite: A Rich Source of Thermal Insulator

open access: yesAdvanced Science, EarlyView.
Halide perovskites exhibit ultralow thermal conductivity driven by intrinsic lattice softness and strong anharmonicity, falling below conventional defect‐engineering limits. Weak metavalent bonding, A‐site rattling, and dynamic octahedral tilting drive phonon scattering to the Ioffe–Regel limit, where wave‐like tunneling replaces particle‐like ...
Haolin Ye   +3 more
wiley   +1 more source

Certain New Class of Harmonic Functions Involving Quantum Calculus

open access: yesJournal of Function Spaces, 2022
Here in this paper, we are using the concepts of q-calculus operator theory associated with harmonic functions and define the q-Noor integral operator for harmonic functions f∈H0. We investigate a new class SH0m,q,α of harmonic functions f∈H0.
Mohammad Faisal Khan
doaj   +1 more source

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