Bounds for the second Hankel determinant of certain univalent functions (Q2436136)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Bounds for the second Hankel determinant of certain univalent functions |
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Bounds for the second Hankel determinant of certain univalent functions (English)
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21 February 2014
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Estimates for the second Hankel determinant \(a_2a_4-a_3^2\) of the analytic function \(f(z)=z+a_2z^2+a_3z^3+\ldots\), for which either \[ \frac{zf'(z)}{f(z)}\qquad \text{{or}}\qquad 1+\frac{zf''(z)}{f'(z)} \] is subordinate to a certain analytic function, are investigated.
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starlike functions
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convex functions
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Hankel determinant
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