Salagean算子定义的双单叶函数子类的系数估计

In this paper, a new subclass N_Σ~(h,p)(m, λ, μ) of analytic and bi-univalent functions in the open unit disk U is defined by salagean operator. We obtain coefficients bounds |a_2| and |a_3| for functions of the class. Moreover, we verify Brannan and Clunie's conjecture |a_2| ≤2~(1/2)for some of our classes. The results in this paper extend many results recently researched by many authors.     

与条形区域有关的双向单叶解析函数子类的系数估计

本文引入了条形区域内由Salagean算子刻画的解析函数新子类, 讨论了该函数子类的系数估计、Fekete-Szego不等式以及与该函数子类有关的双向单叶函数的系数估计, 所得结果推广了前人的一些工作.     

几类亚纯双单叶函数的系数估计

研究了几类亚纯双单叶函数的系数估计,所得结果改进或推广了部分作者的结论.     

算子解析函数的系数不等式

定义受限Salagean算于的一般化族M(φ,n,b),这里φ(z)为正买部函数.完整的给出了当:i)b∈C,μ∈C;ii)b>0,μ∈R;(3)b∈C,μ∈R3种不同情况下关于Fekete-Szego函数A(f)=|a_3-μa_2²}的最好界,这里.f∈M(φ,n,b).主要结果覆盖了一些相关的重要子族.     

一类由从属关系定义的m-折对称双单叶函数的系数估计及Fekte-Szego不等式

本文研究了一类由从属关系定义的$m$-折对称双单叶函数的系数估计及Fekte-Szego不等式,所得结果改进或推广了已有部分作者的结论.     

用Salagean算子定义的缺系数的单叶调和函数类

本文研究了用Salagean算子定义的缺系数单叶调和函数类.利用从属关系和算子理论得到类中函数的系数估计、极值点、偏差定理、卷积性质、凸性组合与凸半径,推广了已有的一些结果.     

一类一般的双单叶强Bazilevi■解析函数类的系数估计

引入并研究了一类单位圆盘U={z:|z|1}内双单叶强Bazilevi■解析函数类,得到了此函数类的a_2、a_3的系数估计及其Fekete-Szeg?不等式.并给出了几个已知或新的结果.     

卷入Hohlov算子的某解析双单叶函数子类的系数估计*

本文引入并研究卷入 Hohlov 算子的解析双单叶函数类Σ的新子类S^a,b,c_Σ(τ, μ, λ, γ; φ),然后得到其对应的系数a₂ 和a₃的有界估计. 进而,一些与早期已有结果的因果关系和联系也被给出.     

I族函数的反函数系数的精确上界

本文得出导数具有正实部的解折函数族的反函数的系数的精确上界。     

Hilbert空间中具有正算子系数的亚纯单叶算子值函数

本文讨论了Hilbert空间中具有正算子系数的亚纯单叶算子值函数集Σ[α，β]，得到了f(z)∈Σ[α，β]的充要条件及算子系数估计，并表明在算术平均及凸线性组合下Σ[α，β]是闭的．     

Coefficient Estimates for Bi-Univalent Bazilevic Functions

In this paper we consider the class of Bazilevic functions for bi-univalent functions. For this we will estimate the coefficients a2 and a3 using Caratheodory func- tions and the method of differential subordination.     

Coefficient Estimates for Certain Subclasses of Bi-Univalent Ma-Minda Mocanu-Convex Functions

In this paper, we introduce and investigate a new subclass of the function class Σ of bi-univalent functions of the Mocanu-convex type defined in the open unit disk, satisfy Ma and Minda subordination conditions. Furthermore, we find estimates on the Taylor-Maclaurin coefficients |a2| and |a3| for functions in the new subclass introduced here. Further Application of Hohlov operator to this class is obtained. Several(known or new) consequences of the results are also pointed out.     

Coefficient Estimates for Two Subclasses of Analytic and Bi-Univalent Functions

Ukrainian Mathematical Journal - We introduce two new subclasses of the class ?? of analytic and bi-univalent functions in the open unit disk U. Furthermore, we establish estimates...     

双单叶函数某个子类的Faber多项式系数估计

The main objective of this paper is to derive the upper bounds for the coefficients of functions in a subclass of analytic and bi-univalent functions associated with Faber polynomials.The consequences presented here point out and correct the errors of some earlier results.     

利用$(s,t)$-微分算子和拟从属定义的双单叶函数新子类的系数相关问题研究

本文中,我们引进了由$(s,t)$-微分算子和拟从属定义的一类广义双单叶函数类. 对该新函数类及其子类,利用Faber多项式展开式我们得到了前两项系数$|a_2|$, $|a_3|$和一般项系数$|a_n|~(n\geq 4)$的估计,然后也解决了Fekete-Szeg\"{o}问题.     

一类由切比雪夫多项式和$q$-微分算子定义的双单叶解析函数的初始系数估计

本文介绍了一类由切比雪夫多项式和$q$-微分算子定义的双单叶解析函数,得到了相关系数估计和Fekte-Szego不等式,所得结果改进或推广了已有部分作者的结论.     

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

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.