نتایج جستجو برای: convex univalent functions

تعداد نتایج: 535731  

Journal: :Journal of Taibah University for Science 2021

The convolution of convex harmonic univalent functions in the unit disk, unlike analytic functions, may not be or even univalent. main purpose this work is to develop previous in...

‎In this paper‎, ‎we study the convex combinations of harmonic mappings obtained by shearing a class of slit conformal mappings‎. ‎Sufficient conditions for the convex combinations of harmonic mappings of this family to be univalent and convex in the horizontal direction are derived‎. ‎Several examples of univalent harmonic mappings constructed by using these methods are presented to illustrate...

2004
JAY M. JAHANGIRI

Sufficient coefficient conditions for complex functions to be close-to-convex harmonic or convex harmonic are given. Construction of close-to-convex harmonic functions is also studied by looking at transforms of convex analytic functions. Finally, a convolution property for harmonic functions is discussed. Harmonic, Convex, Close-to-Convex, Univalent.

Journal: :Bulletin of the Australian Mathematical Society 1983

Journal: :Rocky Mountain Journal of Mathematics 1986

Let $C_0(alpha)$ denote the class of concave univalent functions defined in the open unit disk $mathbb{D}$. Each function $f in C_{0}(alpha)$ maps the unit disk $mathbb{D}$ onto the complement of an unbounded convex set. In this paper, we study the mapping properties of this class under integral operators.

Journal: :Bulletin of the American Mathematical Society 1974

Journal: :Michigan Mathematical Journal 1955

Journal: :Journal of the Mathematical Society of Japan 1963

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