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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2011 Volume 202, Number 12, Pages 57–106 (Mi sm7648)

This article is cited in 2 papers

Bounds for the moduli of continuity for conformal mappings of domains near their accessible boundary arcs

E. P. Dolzhenko

M. V. Lomonosov Moscow State University, Faculty of Mechanics and Mathematics

Abstract: The paper presents bounds for the moduli of continuity $\omega(f,\overline{G},\delta)$ of conformal mappings $w=f(z)$ of a bounded simply connected domain $G$ with an arbitrary Jordan boundary onto a bounded simply connected domain with an arbitrary Jordan boundary, the ‘quality’ of boundaries being taken into account. For a Jordan curve (simple arc or a closed contour), its quality is characterized in general by its modulus of oscillation, and if it has finite length, by a more sensitive modulus of rectifiability — these purely metric concepts were introduced by the author in 1996. Theorems on the behaviour of conformal mappings of simply connected domains of arbitrary nature near open accessible boundary arcs are established.
Bibliography: 18 titles.

Keywords: univalent conformal mapping, accessible boundary arc of a simply connected domain, modulus of continuity, modulus of oscillation, modulus of rectifiability.

UDC: 517.54

MSC: 30C35, 30D04

Received: 03.11.2009 and 24.02.2011

DOI: 10.4213/sm7648


 English version:
Sbornik: Mathematics, 2011, 202:12, 1775–1823

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© Steklov Math. Inst. of RAS, 2025