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Zapiski Nauchnykh Seminarov POMI, 2000, Volume 263, Pages 40–48
(Mi znsl1134)
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This article is cited in 2 scientific papers (total in 2 papers)
On the value region of initial coefficients in one class of typically real functions
E. G. Goluzina St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences
Abstract:
Let $T$ be the class of functions satisfying the following conditions: these functions are regular and typically real in the unit disk, they have the form $f(z)=z+c_2z^2+c_3z^3+\dotsc$, and the equality $f(z_1)=w_1$ holds for some fixed $z_1$ and $w_1$ with $\operatorname{Im}z_1\ne0$. We find the set of values of the first two coefficients for functions from this class. Boundary functions for these sets of values are found. Some previous results of the author are supplemented. Boundary functions for the sets of values for the functionals $f'(z_1)$ and $f(z_2)$ in the class $T_1$ are found.
Received: 18.10.1999
Citation:
E. G. Goluzina, “On the value region of initial coefficients in one class of typically real functions”, Analytical theory of numbers and theory of functions. Part 16, Zap. Nauchn. Sem. POMI, 263, POMI, St. Petersburg, 2000, 40–48; J. Math. Sci. (New York), 110:6 (2002), 3052–3057
Linking options:
https://www.mathnet.ru/eng/znsl1134 https://www.mathnet.ru/eng/znsl/v263/p40
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Abstract page: | 202 | Full-text PDF : | 43 |
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