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

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Bibliographic Details
Main Authors: Maslina Darus, Imran Faisal
Format: Article
Published: Penerbit Universiti Kebangsaan Malaysia 2010
Online Access:http://journalarticle.ukm.my/1975/
http://www.ukm.my/~ppsmfst/jqma/index.html
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Institution: Universiti Kebangsaan Malaysia