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Zapiski Nauchnykh Seminarov POMI, 2005, Volume 323, Pages 24–33 (Mi znsl377)  

This article is cited in 2 scientific papers (total in 2 papers)

On the region of values of the system $\{f(z_1),\dots,f(z_n)\}$ in the class of typically real functions. II

E. G. Goluzina

St. Petersburg Department of V. A. Steklov Institute of Mathematics, Russian Academy of Sciences
Full-text PDF (170 kB) Citations (2)
References:
Abstract: The paper studies the region $D_{m,1}(T)$ of values of the system $\{f(z_1),f(z_2),\dots,f(z_m),f(r)\}$, $m\ge1$, where $z_j$ ($j=1,2,\dots,m$) are arbitrary fixed points of the disk $U=\{z:|z|<1\}$ with $\operatorname{Im}z_j\ne0$ ($j=1,2,\ldots,m$), and $r$, $0<r<1$, is fixed, on the class $T$ of functions $f(z)=z+a_2z^2+\cdots$ regular in the disk $U$ and satisfying in the latter the condition $\operatorname{Im}f(z)\operatorname{Im}z>0$ for $\operatorname{Im}z\ne0$. An algebraic characterization of the set $D_{m,1}(T)$ in terms of nonnegative Hermitian forms is given, and all the boundary functions are described. As an implication, the region of values of $f(z_m)$ in the subclass of functions from the class $T$ with prescribed values $f(z_k)$ ($k=1,2,\dots,m-1$) and $f(r)$ is determined.
Received: 13.06.2005
English version:
Journal of Mathematical Sciences (New York), 2006, Volume 137, Issue 3, Pages 4774–4779
DOI: https://doi.org/10.1007/s10958-006-0274-8
Bibliographic databases:
UDC: 517.54
Language: Russian
Citation: E. G. Goluzina, “On the region of values of the system $\{f(z_1),\dots,f(z_n)\}$ in the class of typically real functions. II”, Computational methods and algorithms. Part XVIII, Zap. Nauchn. Sem. POMI, 323, POMI, St. Petersburg, 2005, 24–33; J. Math. Sci. (N. Y.), 137:3 (2006), 4774–4779
Citation in format AMSBIB
\Bibitem{Gol05}
\by E.~G.~Goluzina
\paper On the region of values of the system $\{f(z_1),\dots,f(z_n)\}$ in the class of typically real functions.~II
\inbook Computational methods and algorithms. Part~XVIII
\serial Zap. Nauchn. Sem. POMI
\yr 2005
\vol 323
\pages 24--33
\publ POMI
\publaddr St.~Petersburg
\mathnet{http://mi.mathnet.ru/znsl377}
\mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=2160305}
\zmath{https://zbmath.org/?q=an:1093.30009}
\transl
\jour J. Math. Sci. (N. Y.)
\yr 2006
\vol 137
\issue 3
\pages 4774--4779
\crossref{https://doi.org/10.1007/s10958-006-0274-8}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-33746816115}
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  • https://www.mathnet.ru/eng/znsl/v323/p24
  • This publication is cited in the following 2 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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