Bounds on third Hankel determinant for certain classes of analytic functions

Jugal K. Prajapat, Deepak Bansal, Sudhananda Maharana

Abstract


In this paper, the estimate for the third Hankel determinant H_{3,1}(f) of Taylor coefficients of function f(z) = z +\sum_{n=2}{\infty} a_n z^n, belonging to certain classes of analytic functions in the open unit disk D, are investigated. 


Keywords


Analytic, Starlike and Convex functions; Fekete-Szego functional; Hankel determinants.

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DOI: http://dx.doi.org/10.24193/subbmath.2017.2.05

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