A simple proof of a version of Jack's lemma for domains whose boundary is simple at a
boundary point, is given. As an application we study the growth of starlike univalent …

In this paper, we give an upper bound of Hankel determinant of (H2 (1)) for the classes of M
(α), α∈ C. Also, for M (α), we obtain a sharp estimate for the classical Fekete-Szegö …

In this paper, a boundary version of the Schwarz lemma is investigated for driving point
impedance functions and its circuit applications. It is known that driving point impedance …

We consider a different version of Schwarz Lemma for λ-spirallike function of complex order
at the boundary of the unit disc D. We estimate the modulus of the angular derivative of the …

In this brief, the relation between Schwarz-Pick lemma and driving point impedance function
is investigated. Schwarz-Pick lemma is given as the generalized version of Schwarz lemma …

We give an upper bound of the first-order Hankel determinant (H 2 (1)) for the classes of
analytic functions. In addition, an estimate with Hankel determinant from below is given for …

In this study, a Schwarz lemma at the boundary for analytic functions at the unit disc, which
generalizes classical Schwarz lemma for bounded analytic functions, is considered. The …

The aim of this study is to solve the Fekete-Szegö problem and to define upper bound for
Hankel determinant H2 (1) in a novel class K of analytical functions in the unit disc …

In this paper, we present a Schwarz lemma at the boundary for analytic functions at the unit
disc, which generalizes classical Schwarz lemma for bounded analytic functions. For new …

In this paper, we give a simple proof for the boundary Schwarz lemma at the upper half
plane. Considering that f (z) is a holomorphic function defined on the upper half plane, we …