Results 81 to 90 of about 580,998 (225)

Euler Polynomials and Bi-univalent Functions

open access: yesEuropean Journal of Pure and Applied Mathematics
Our research introduces new subclasses of analytical functions that are defined by Euler polynomials. We then proceed to estimate the Fekete-Szego functional problem and the Maclaurin coefficients for this specific subfamily, denoted as |a2| and |a3|. Furthermore, we demonstrate several new results that emerge when we specialize the parameters used in ...
Ala Amourah   +5 more
openaire   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

open access: yesFlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen   +9 more
wiley   +1 more source

Second Hankel determinant for certain subclasses of bi-univalent functions

open access: yes, 2017
In the present paper, we obtain the upper bounds for the second Hankel determinant for certain subclasses of analytic and bi-univalent functions.
Çağlar, Murat   +2 more
core   +1 more source

Coefficient Related Studies for New Classes of Bi-Univalent Functions

open access: yes, 2020
Using the recently introduced Sălăgean integro-differential operator, three new classes of bi-univalent functions are introduced in this paper. In the study of bi-univalent functions, estimates on the first two Taylor–Maclaurin coefficients are ...
Ágnes Orsolya Páll-Szabó   +1 more
core   +1 more source

Flexibilizing inorganic thermoelectrics

open access: yesFlexMat, EarlyView.
This perspective reviews advances in flexible inorganic thermoelectric materials, covering ductile bulks, thin films, and fibers/yarns. It highlights strategies like warm metalworking, van der Waals material screening, orientation and sandwich engineering, and device integration, offering pathways to combine flexibility and performance for wearable ...
Xiao‐Lei Shi   +3 more
wiley   +1 more source

Coefficient Estimates for New Subclasses of Analytic and Bi-Univalent Functions Defined by Al-Oboudi Differential Operator

open access: yesJournal of Function Spaces and Applications, 2013
We introduce and investigate two new subclasses and of analytic and bi-univalent functions in the open unit disk For functions belonging to these classes, we obtain estimates on the first two Taylor-Maclaurin coefficients ...
Serap Bulut
doaj   +1 more source

Estimate for initial MacLaurin coefficients of certain subclasses of bi-univalent functions of complex order associated with the Hohlov operator

open access: yesAnnales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018
In this paper, we define a new subclass of bi-univalent functions involving a Hohlov operator in the open unit disk. For functions belonging to this class, we obtain estimates on the first two Taylor-Maclaurin coefficients |a2| and | a3|.
Gangadharan Murugusundaramoorthy   +1 more
doaj   +1 more source

Certain subclass of alpha-convex bi-univalent functions defined using $q$-derivative operator

open access: yes
summary:The present investigation deals with a new subclass of alpha-convex bi-univalent functions in the unit disc $E=\left\rbrace z\colon \mid z \mid
Singh, Gurcharanjit, Singh, Gagandeep
core   +1 more source

(p, q)-Lucas polynomials and their applications to bi-univalent functions

open access: yesProyecciones (Antofagasta), 2019
In the present paper, by using the Lp,q,n(x) functions, our methodology intertwine to yield the Theory of Geometric Functions and that of Special Functions, which are usually considered as very different fields. Thus, we aim at introducing a new class of bi-univalent functions defined through the (p, q)-Lucas polynomials.
Şahsene Altınkaya, Sibel Yalçın
openaire   +4 more sources

Emotional Ambivalence Contextualized: The Antecedents and Consequences of Daily Affective Profiles During Pregnancy

open access: yesJournal of Organizational Behavior, EarlyView.
ABSTRACT Research has increasingly highlighted the prevalence of emotionally ambivalent experiences for employees at work, with several self‐regulatory benefits emerging. Yet we do not have a full understanding of which work‐related contexts yield generative or maladaptive consequences of emotional ambivalence.
David F. Arena Jr.   +4 more
wiley   +1 more source

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