Results 91 to 100 of about 10,269,497 (359)
Subclasses of Bi-Univalent Functions Defined by Frasin Differential Operator
Mathematics, 2020 Let Ω denote the class of functions f ( z ) = z + a 2 z 2 + a 3 z 3 + ⋯ belonging to the normalized analytic function class A in the open unit disk U = z : z < 1 , which are bi-univalent in U , that is, both the function f and its inverse f − 1 are ...
I. Aldawish, T. Al-Hawary, B. Frasin
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Advanced Functional Materials, EarlyView.In this work, Bi2Te3 is integrated into a 3D‐printed nanocarbon electrode for NH4+ storage. A rocking‐chair battery with CuHCF as the cathode delivers a high energy density of 134.8 Wh kg−1 and a power density of 1800 W kg−1. The design allows easy recovery of carbon additives, promoting sustainability and recyclability in next‐generation aqueous ...
Sunny Nandi, Martin Pumera
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On Third Hankel Determinant for Certain Subclass of Bi-Univalent Functions
SymmetryThis study presents a subclass of bi-univalent functions within the open unit disk region . The objective of this class is to determine the bounds of the Hankel determinant of order 3, ().
Qasim Ali Shakir, W. Atshan
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Initial Bounds for Certain Classes of Bi-Univalent Functions Defined by Horadam Polynomials [PDF]
Abstract and Applied Analysis, 2018 The main purpose of this article is to make use of the Horadam polynomials hnx and the generating function Πx,z, in order to introduce three new subclasses of the bi-univalent function class σ.
C. Abirami, N. Magesh, J. Yamini
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Advanced Functional Materials, EarlyView.A battery‐free, wireless device for real‐time monitoring of pressure injury and hygiene integrates pressure (≈10 kPa), temperature (≈40 °C), and NH3 gas sensing with antibacterial functionality. Enabled by near‐field communication, it ensures simultaneous, interference‐free mechanical and chemical monitoring, offering a practical solution for pressure ...
Myungwoo Choi +19 more
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Journal of Function Spaces, 2021 It is well-known that the logarithmic coefficients play an important role in the development of the theory of univalent functions. If S denotes the class of functions fz=z+∑n=2∞anzn analytic and univalent in the open unit disk U, then the logarithmic ...
Davood Alimohammadi +3 more
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Advanced Functional Materials, EarlyView.This work utilizes poly(heptazine imides) as a model system to demonstrate how fine‐tuning the crystal structure influences the photocatalytic properties of layered carbon nitrides in the hydrogen evolution reaction. In particular, the nature of rotational defects and the hydration shell of cations are key contributors to enhanced hydrogen evolution ...
Diana V. Piankova +11 more
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Maclaurin Coefficient Estimates of Bi-Univalent Functions Connected with the q-Derivative
, 2020 In this paper we introduce a new subclass of the bi-univalent functions defined in the open unit disc and connected with a q-analogue derivative. We find estimates for the first two Taylor-Maclaurin coefficients a 2 and a 3 for functions in this subclass,
S. El-Deeb, T. Bulboacă, B. El-Matary
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Publications de l'Institut Math?matique (Belgrade), 2020 We investigate specific new subclasses of the function class ? of bi-univalent function defined in the open unit disc, which is connected with quasi-subordination.
S. Yalçın +2 more
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Advanced Functional Materials, EarlyView.This paper synthesizes CuO@CuCo2O4 catalysts via an emulsion hydrothermal method. Among them, CuCuCo2O4 perfectly inherits the advantages of CuO and Co3O4 and successfully connects the reactions in series. During the electrolysis process, CuO is reduced to Cu.
Jin Li +5 more
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