Estimate on the second Hankel functional for functions whose derivative has a positive real part

Denote to be the class of functions which are analytic, normalised and univalent in the open unit disc D-{z:|z|<1}. Also denote to represent the subclass of S whose derivative has a positive real part. Next, write f (z)-z+∑ a z where a is a complex constant and denote the qth Hankel determinant f...

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Bibliographic Details
Main Authors: Aini Janteng, Suzeini Abdul Halim, Maslina Darus
Format: Article
Language:English
Published: Penerbit ukm 2008
Online Access:http://journalarticle.ukm.my/1866/
http://journalarticle.ukm.my/1866/
http://journalarticle.ukm.my/1866/1/JQMA4%281%29-17-aini-drk.pdf