Bi-concave functions involving a differential operator

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ALTINKAYA s.; YALCIN S.

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Journal Paper

Paper Information

Journal: JOURNAL OF MATHEMATICAL EXTENSION Year:2019 | Volume:13 | Issue:2 Page(s): 111-122

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Title

Bi-concave functions involving a differential operator

Author(s)

ALTINKAYA s. | YALCIN S. | Issue Writer Certificate

Keywords

bi-concave functions

differential operator

coefficient estimates

Abstract

The purpose of the present paper is to introduce a class $\boldsymbol{D}% _{\lambda, \delta }^{k, \alpha }C_{0}(\beta )$ of bi-concave functions defined by a differential operator. We find estimates on the Taylor-Maclaurin coefficients $\left\vert a_{2}\right\vert $ and $\left\vert a_{3}\right\vert $ for functions in this class. Several consequences of these results are also pointed out in the form of corollaries.

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APA: Copy

ALTINKAYA, s., & YALCIN, S.. (2019). Bi-concave functions involving a differential operator. JOURNAL OF MATHEMATICAL EXTENSION, 13(2), 111-122. SID. https://sid.ir/paper/739107/en

Vancouver: Copy

ALTINKAYA s., YALCIN S.. Bi-concave functions involving a differential operator. JOURNAL OF MATHEMATICAL EXTENSION[Internet]. 2019;13(2):111-122. Available from: https://sid.ir/paper/739107/en

IEEE: Copy

s. ALTINKAYA, and S. YALCIN, “Bi-concave functions involving a differential operator,” JOURNAL OF MATHEMATICAL EXTENSION, vol. 13, no. 2, pp. 111–122, 2019, [Online]. Available: https://sid.ir/paper/739107/en

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