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Strongly gamma-starlike functions of order alpha

Mamoru NunokawaJanusz Sokół — 2013

Annales UMCS, Mathematica

In this work we consider the class of analytic functions G(α, γ), which is a subset of gamma-starlike functions introduced by Lewandowski, Miller and Złotkiewicz in Gamma starlike functions, Ann. Univ. Mariae Curie- Skłodowska, Sect. A 28 (1974), 53-58. We discuss the order of strongly starlikeness and the order of strongly convexity in this subclass.

Strongly gamma-starlike functions of order alpha

Mamoru NunokawaJanusz Sokół — 2013

Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica

In this work we consider the class of analytic functions 𝒢 ( α , γ ) , which is a subset of gamma-starlike functions introduced by Lewandowski, Miller and Złotkiewicz in Gamma starlike functions, Ann. Univ. Mariae Curie-Skłodowska, Sect. A 28 (1974), 53–58. We discuss the order of strongly starlikeness and the order of strongly convexity in this subclass.

Properties of functions concerned with Carathéodory functions

Mamoru NunokawaEmel YavuzShigeyoshi Owa — 2013

Annales UMCS, Mathematica

Let Pn denote the class of analytic functions p(z) of the form p(z) = 1+cnzn + cn+1zn+1 + ... in the open unit disc U . Applying the result by S. S. Miller and P. T. Mocanu (J. Math. Anal. Appl. 65 (1978), 289-305), some interesting properties for p(z) concerned with Carath´eodory functions are discussed. Further, some corollaries of the results concerned with the result due to M. Obradović and S. Owa (Math. Nachr. 140 (1989), 97-102) are shown.

Properties of functions concerned with Caratheodory functions

Mamoru NunokawaEmel Yavuz DumanShigeyoshi Owa — 2013

Annales Universitatis Mariae Curie-Skłodowska, sectio A – Mathematica

Let 𝒫 n denote the class of analytic functions p ( z ) of the form p ( z ) = 1 + c n z n + c n + 1 z n + 1 + in the open unit disc 𝕌 . Applying the result by S. S. Miller and P. T. Mocanu (J. Math. Anal. Appl. 65 (1978), 289-305), some interesting properties for p ( z ) concerned with Caratheodory functions are discussed. Further, some corollaries of the results concerned with the result due to M. Obradovic and S. Owa (Math. Nachr. 140 (1989), 97-102) are shown.

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