نتایج جستجو برای: starlike

تعداد نتایج: 993  

Journal: :Journal of Classical Analysis 2013

Journal: :Journal of Inequalities and Applications 2013

Journal: :Transactions of the American Mathematical Society 1969

Journal: :Annales Polonici Mathematici 2005

Journal: :Michigan Mathematical Journal 1985

In the present paper, we introduce and investigate some properties of two subclasses $ Lambda_{n}( lambda , beta ) $ and $ Lambda_{n}^{+}( lambda , beta ) $;  meromorphic and starlike  functions of order $ beta $. In particular, several inclusion relations, coefficient estimates, distortion theorems and covering theorems are proven here for each of these function classes.

In the present investigation, we use the Horadam Polynomials to establish upper bounds for the second and third coefficients of functions belongs to a new subclass of analytic and $lambda$-pseudo-starlike bi-univalent functions defined in the open unit disk $U$. Also, we discuss Fekete-Szeg$ddot{o}$ problem for functions belongs to this subclass.

Journal: :Publications De L'institut Mathematique 2022

We determine the sufficient conditions for function f(z) = z + a2z2 ... to be starlike of order 1/2, which shows also starlikeness f.

Journal: :Transactions of the American Mathematical Society 1975

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