On close-to-convex functions satisfying a differential inequality

Authors

  • Sukhwinder Singh BILLING Department of Mathematics Sri Guru Granth Sahib World University Fatehgarh Sahib-140 406, Punjab, India e-mail: ssbilling@gmail.com https://orcid.org/0000-0002-6801-2521

Keywords:

Analytic function, convex function, starlike function, close-to-convex.

Abstract

Let C α (β) denote the class of normalized functions f, analytic in the open unit disk E which satisfy the condition…

…We claim that our result improves the result of Chichra, P. N. [1].

Mathematics Subject Classification (2010): 30C80, 30C45.

References

Chichra, P.N., New subclasses of the class of close-to-convex functions, Proc. Amer. Math. Soc., 62(1)(1977), 37-43.

Miller, S.S., Differential inequalities and Caratheodory functions, Bull. Amer. Math. Soc., 81(1975), 79-81.

Noshiro, K., On the theory of schlicht functions, J. Fac. Sci., Hokkaido Univ., 2(1934-35), 129-155.

Warchawski, S.E., On the higher derivatives at the boundary in conformal mappings, Trans. Amer. Math. Soc., 38(1935), 310-340.

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Published

2015-12-30

How to Cite

BILLING, S. S. (2015). On close-to-convex functions satisfying a differential inequality. Studia Universitatis Babeș-Bolyai Mathematica, 60(4), 561–565. Retrieved from https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5833

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