Results 11 to 20 of about 194 (74)
Toeplitz matrices whose elements are coefficients of Bazilevič functions
Open Mathematics, 2018 We consider the Toeplitz matrices whose elements are the coefficients of Bazilevič functions and obtain upper bounds for the first four determinants of these Toeplitz matrices.
Radhika Varadharajan +3 more
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Differential subordination and convexity criteria of integral operators
Open Mathematics, 2017 A significant connection between certain second-order differential subordination and subordination of f′(z) is obtained. This fundamental result is next applied to investigate the convexity of analytic functions defined in the open unit disk.
Chandrashekar R. +2 more
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A generalized Schwarz lemma for two domains related to μ-synthesis
Complex Manifolds, 2018 We present a set of necessary and sufficient conditions that provides a Schwarz lemma for the tetrablock E. As an application of this result, we obtain a Schwarz lemma for the symmetrized bidisc G2.
Pal Sourav, Roy Samriddho
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Coefficient estimates for new subclasses of Ma-Minda bi-univalent functions
Journal of Inequalities and Applications, 2013 In this paper, we introduce and investigate two new subclasses Hσμ(λ,φ) and Mσγ(λ,μ,φ) of Ma-Minda bi-univalent functions defined by using subordination in the open unit disk D={z∈C:|z|
Huo Tang, Guantie Deng, Shuhai Li
semanticscholar +1 more source
The Fekete-Szegö functional problems for some subclasses of m-fold symmetric bi-univalent functions
, 2016 In this paper, we introduce several new subclasses of the class of m -fold symmetric bi-univalent functions and obtain estimates of the Taylor-Maclaurin coefficients |am+1| , |a2m+1| and Fekete-Szegö functional problems for functions in these new ...
Huo Tang +3 more
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Starlike Functions With Respect to a Boundary Point Connected With Bounded Radius Rotation
Journal of Function SpacesIn the current article, we introduce a new subclass of univalent function with bounded radius rotation. For this new class, the authors establish many interesting relations between these classes and existing classes.
A. Alburaikan +4 more
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Coefficient estimates for some subclasses of m-fold symmetric bi-univalent functions
, 2018 In the present investigation, we consider two new general subclasses HΣm(τ, γ;α) and HΣm(τ, γ;β) of Σm consisting of analytic and m-fold symmetric bi-univalent functions in the open unit disk U. For functions belonging to the two classes introduced here,
H. Srivastava +2 more
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On a local version of Jack’s lemma
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019 The purpose of this paper is to provide a result which concerns with the boundary behavior of analytic functions. It may be a local version of the well known Jack’s lemma when we change the function normalization at the origin.
Nunokawa Mamoru, Sokół Janusz
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Studia Universitatis Babeş-Bolyai. Mathematica. In this academic research note, some familiar operators prearranged by fractional-order calculus will first be introduced and various characteristic properties of those operators will next be propounded.
Hüseyin Irmak
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Hankel and symmetric Toeplitz determinants for Sakaguchi starlike functions
Studia Universitatis Babeş-Bolyai. Mathematica. In this paper, we consider the class of starlike functions with respect to symmetric points which are also known as Sakaguchi starlike functions. We de- termine best possible bounds on Zalcman conjecture |a_n^2 – a_(2n-1) | and generalized Zalcman ...
Sushil Kumar +2 more
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