Aini Janteng, and Suzeini Abdul Halim, and Maslina Darus, (2006) Hankel determinant for functions starlike and convex with respect to symmetric points. Journal of Quality Measurement and Analysis, 2 (1). pp. 37-43. ISSN 1823-5670
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Abstract
Sakaguchi (1959) introduced the class of functions S*s , starlike with respect to symmetric points. In 1977, Das and Singh introduced similar class of functions Cs , convex with respect to symmetric points. Here, upper bound for the functional |a2a4-a23| is attained for functions f(z)=z+ ∑ anzn belonging to S*s and Cs . The result obtained is sharp
| Item Type: | Article |
|---|---|
| Keywords: | Starlike with respect to symmetric points; convex with respect to symmetric points; Hankel determinant |
| Journal: | Journal of Quality Measurement and Analysis |
| ID Code: | 1819 |
| Deposited By: | Ms. Nor Ilya Othman |
| Deposited On: | 14 Jun 2011 07:11 |
| Last Modified: | 21 Jun 2011 07:03 |
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