an upper bound to the second hankel functional for the class of gamma-starlike functions
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abstract
the objective of this paper is to obtain an upper bound to the second hankel determinant $|a_{2}a_{4}-a_{3}^{2}|$ for the function $f$, belonging to the class of gamma-starlike functions, using toeplitz determinants. the result presented here include two known results as their special cases.
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An upper bound to the second Hankel functional for the class of gamma-starlike functions
The objective of this paper is to obtain an upper bound to the second Hankel determinant $|a_{2}a_{4}-a_{3}^{2}|$ for the function $f$, belonging to the class of Gamma-starlike functions, using Toeplitz determinants. The result presented here include two known results as their special cases.
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Journal title:
bulletin of the iranian mathematical societyجلد ۴۱، شماره ۶، صفحات ۱۳۲۷-۱۳۳۷
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