Hankel determinant for the class of K(α, β)

Let f(z)=z+∑anzn be an analytic function in the open unit disc. A sharp upper bound is obtained for the functional |a2a4-a23| for the class k(α,β) of normalised close-to-convex functions defined in the open unit disc

Bibliographic Details
Main Authors: Maslina Darus, Imran Faisal
Format: Article
Published: Penerbit Universiti Kebangsaan Malaysia 2010
Online Access:http://journalarticle.ukm.my/1975/
http://journalarticle.ukm.my/1975/