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Zapiski Nauchnykh Seminarov LOMI, 1981, Volume 113, Pages 199–203
(Mi znsl3947)
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This article is cited in 1 scientific paper (total in 1 paper)
Simple proof of a theorem on removable singularities of analytic functions satisfying a Lipschitz condition
S. V. Khrushchev
Abstract:
Let $E$ be a compact subset of the complex plane $\mathbb C$, having positive planar Lebesgue measure. Then there exists a nonconstant function $f$, analytic in the domain $\mathbb C\setminus E$, satisfying the Lipschitz condition
\begin{equation}
|f(z_1)-f(z_2)|\le\operatorname{const}|z_1-z_2|,\qquad z_j\in\mathbb C\setminus E,\quad j=1,2. \end{equation}
In this note there is given a simple proof of the theorem of N. X. Uy, formulated above. It is also proved that each bounded measurable function $\alpha$, defined on the set $E$, can be revised on a set of small ebesgue measure so that for the function $\varphi$ obtained the Cauchy integral
$$
f(z)=\iint_E\frac{\varphi(t)}{t-z}\,dm_2(t)
$$
satisfies condition (1).
Citation:
S. V. Khrushchev, “Simple proof of a theorem on removable singularities of analytic functions satisfying a Lipschitz condition”, Investigations on linear operators and function theory. Part XI, Zap. Nauchn. Sem. LOMI, 113, "Nauka", Leningrad. Otdel., Leningrad, 1981, 199–203; J. Soviet Math., 22:6 (1983), 1829–1832
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https://www.mathnet.ru/eng/znsl3947 https://www.mathnet.ru/eng/znsl/v113/p199
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