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Coefficient Estimates for a Class of m-fold Symmetric Bi-univalent Function Defined by subordination

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Communications in Mathematical Research 2019年第1期35卷 57-64页

作者： Guo Dong Tang Huo Ao En Xiong Liang-peng Ji You-qing Foundation Department Chuzhou Vocational and Technical CollegeChuzhouAnhui239000 School of Mathematics and Statistics Chifeng UniversityChifengInner Mongolia024000 School of Mathematics and Statistics Wuhan UniversityWuhan430072 不详

In this paper, we investigate the coefficient estimates of a class of m-fold bi-univalent function de?ned by subordination. The results presented in this paper improve or generalize the recent works of other authors.

关键词： analytic function univalent function coefficient estimate m-fold symmetric bi-univalent function subordination

Estimate and Fekete-Szeg? Inequality for a Class of m-Fold Symmetric Bi-Univalent Function Defined by subordination

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Journal of Mathematical Research with Applications 2019年第3期39卷 295-303页

作者： Dong GUO Huo TANG En AO Liangpeng XIONG Foundation Department Chuzhou Vocational and Technical College School of Mathematics and Statistics Chifeng University School of Mathematics and Statistics Wuhan University

In this paper, we investigate the coefficient estimate and Fekete-Szeg? inequality of a class of m-fold bi-univalent function defined by subordination. The results presented in this paper improve or generalize the rec... 详细信息

关键词： analytic functions univalent functions coefficient estimates m-fold symmetric bi-univalent function Fekete-Szeg? inequality subordination

Certain Subclasses of Harmonic Univalent Functions Defined by Convolution and subordination

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Journal of Mathematical Research with Applications 2019年第1期39卷 31-42页

作者： Shuhai LI Huo TANG En AO School of Mathematics and Statistics Chifeng University

Let SH be the class of functions f = h + ˉg that are harmonic univalent and sensepreserving in the open unit disk U = {z ∈ C : |z| < 1} for which f(0) = f′(0)-1 = 0. In the present paper, we introduce some new subc... 详细信息

Let SH be the class of functions f = h + ˉg that are harmonic univalent and sensepreserving in the open unit disk U = {z ∈ C : |z| subordination. Sufficient coefficient conditions,distortion bounds, extreme points and convolution properties for functions of these classes are obtained. Also, we discuss the radii of starlikeness and convexity.

关键词： Harmonic univalent functions subordination convolution radius

subordination Results for p-Valent Meromorphic Functions Associated with a Linear Operator

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Analysis in Theory and Applications 2014年第4期30卷 369-376页

作者： A.O.Mostafa M.K.Aouf Department of Mathematics Faculty of Science Mansoura University

In this paper, by making use of the Hadamard products, we obtain some subordination results for certain family of meromorphic functions defined by using a new linear operator.

关键词： Meromorphic functions subordination Hadamard product linear operator.

A New Class of Harmonic Multivalent Functions Defined by subordination

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Journal of Mathematical Research with Applications 2016年第5期36卷 537-546页

作者： Shuhai LI Huo TANG School of Mathematics and Statistics Chifeng University

In the present paper,we introduce some new subclasses of harmonic multivalent functions defined by generalized Dziok-Srivastava operator.Sufficient coefficient conditions,distortion bounds and extreme points for funct... 详细信息

关键词： harmonic multivalent functions Dziok-Srivastava operator subordination extreme points distortion bounds

Some Properties of Subclasses of Meromorphic Multivalent Functions Defined by subordination

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Journal of Mathematical Research with Applications 2015年第1期35卷 71-84页

作者： Li-na MA Huo TANG Shuhai LI School of Mathematics and Statistics Chifeng University

In the present paper, we introduce some new subclasses of meromorphic starlike,convex, close-to-convex and quasi-convex functions of β-reciprocal in terms of the linear operator using subordination. We obtain the coefficient estimates, convolution properties, integral preserving properties and inclusion relationships of the classes. The results presented here include several results as their special cases.

关键词： analytic functions meromorphic subordination reciprocal coefficient estimate convolution integral preserving inclusion

ON CERTAIN CLASS OF ANALYTIC FUNCTIONS DEFINED BY DIFFERENTIAL subordination

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Acta Mathematica Scientia 2002年第3期22卷 388-392页

作者：刘名生 Department of Mathematics， South China Normal University， Guangzhou 510631， China

In this paper, the new subclass B-n(lambda,alpha,A,B) of analytic functions is introduced. Its subordination relations, inclusion relations, the inequality properties and convering theorem are discussed. The results obtained in this paper are sharp, which generalize the related works of some authors and some other new results are obtained.

关键词： Bazilevic function subordination bound

STRONG subordination OF SYMMETRIC DIRICHLET FORMS

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Chinese Annals of Mathematics,Series B 1998年第1期19卷 81-86页

作者： YING JIANGGANG 浙江大学数学系浙江杭州

The author introduces a notion of subordination for symmetric Dirichlet forms and proves that the subordination is actually equivalent to the killing transformation by multiplicative functionals in the theory of symm... 详细信息

关键词： Dirichlet forms Markov processes subordination

On new classes of strongly Janowski type functions of complex order

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Applied Mathematics(A Journal of Chinese Universities) 2023年第1期38卷 89-99页

作者： Khalil Ahmad Khudija Bibi M.Sajjad Shabbir Department of Mathematics Air UniversityPAF-ComplexSector E-9IslamabadPakistan Department of Mathematics Faculty of Basic and AppliedInternational Islamic University IslamabadPakistan Department of Mathematics University of Poonch RawalakotAzad Kashmir 12350Pakistan

We investigate some new subclasses of analytic functions of Janowski type of complex order.We also study inclusion properties,distortion theorems,coefficient bounds and radius of convexity of the functions.Moreover,analytic properties of these classes under certain integral operator are also discussed.Our findings are more comprehensive than the existing results in the literature.

关键词： subordination Janowski function starlike function convex function complex order