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http://dx.doi.org/10.7468/jksmeb.2022.29.4.307

ESTIMATE OF THIRD ORDER HANKEL DETERMINANT FOR A CERTAIN SUBCLASS OF ANALYTIC FUNCTIONS ASSOCIATED WITH CARDIOID DOMAIN  

Singh, Gagandeep (Department of Mathematics, Khalsa College)
Singh, Gurcharanjit (Department of Mathematics, G.N.D.U. College)
Publication Information
The Pure and Applied Mathematics / v.29, no.4, 2022 , pp. 307-319 More about this Journal
Abstract
The present paper deals with the upper bound of third order Hankel determinant for a certain subclass of analytic functions associated with Cardioid domain in the open unit disc E = {z ∈ ℂ : |z| < 1}. The results proved here generalize the results of several earlier works.
Keywords
analytic functions; subordination; Cardioid domain; third Hankel determinant; Fekete-Szego inequality;
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