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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2019 Volume 210, Number 7, Pages 120–144 (Mi sm9095)

This article is cited in 14 papers

Two-sided estimates for domains of univalence for classes of holomorphic self-maps of a disc with two fixed points

O. S. Kudryavtsevaa, A. P. Solodovb

a Volgograd State Technical University, Volgograd, Russia
b Faculty of Mechanics and Mathematics, Lomonosov Moscow State University, Moscow, Russia

Abstract: We investigate the class of holomorphic maps of a disc into itself that have an interior and a boundary fixed point, as well as the class of holomorphic maps of a half-plane into itself that have a fixed point in the interior of the domain and a fixed point at infinity. Two-sided estimates for domains of univalence are obtained for these function classes in terms of the values of the angular derivative at the boundary fixed point and the position of the interior fixed point.
Bibliography: 21 titles.

Keywords: holomorphic map, fixed points, angular derivative, domain of univalence.

UDC: 517.54

Received: 01.03.2018 and 25.08.2018

DOI: 10.4213/sm9095


 English version:
Sbornik: Mathematics, 2019, 210:7, 1019–1042

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© Steklov Math. Inst. of RAS, 2024