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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb. (N.S.), 1978 Volume 106(148), Number 1(5), Pages 35–43 (Mi sm2549)

This article is cited in 2 papers

On the geometric structure of the image of a disk under mappings by meromorphic functions

G. A. Barsegyan


Abstract: In a recent paper by the author a new geometric definition of deficient values for a function $\omega(z)$ meromorphic in $|z|<\infty$ was introduced, and with its aid a connection between the geometric structure of $F_r=\{\omega(z):|z|\leqslant r\}$ and the distribution of values of $\omega(z)$ was established. In the present paper definitions characterizing the structure of $\partial F_r$, more delicately are introduced, and a more detailed study of these connections is carried out. As a by-product a theorem of Miles is obtained as a corollary. This theorem complements, in a sense, Ahlfors' second fundamental theorem of the theory of covering surfaces.
Bibliography: 3 titles.

UDC: 517.54

MSC: Primary 30D35; Secondary 30C30

Received: 07.09.1977


 English version:
Mathematics of the USSR-Sbornik, 1978, 34:5, 593–601

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