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ВИДЕОТЕКА |
27th International Conference on Finite and Infinite Dimensional Complex Analysis and Applications
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On coefficient problems for close-to-star functions Y. Sim Kyungsung University, Busan |
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Аннотация: Let \begin{equation*} H_{q,n}(f) := \begin{vmatrix} a_{n} &a_{n+1} &\cdots &a_{n+q-1} \\ a_{n+1} &a_{n+2} &\cdots &a_{n+q} \\ \vdots &\vdots &\vdots &\vdots \\ a_{n+q-1} &a_{n+q} &\cdots &a_{n+2(q-1)} \end{vmatrix}. \end{equation*} And, for given $$ J_{n,m}(f):=a_{n+m-1} -a_n a_m. $$ In this talk, we discuss the sharp estimates of the second Hankel determinants such as This is a joint work with Oh Sang Kwon (Kyungsung University, Busan, Korea) and Nak Eun Cho (Pukyong National University, Busan, Korea). Язык доклада: английский |