Diameter problems for univalent functions with quasiconformal extension

Autor: Paul Deiermann
Jazyk: angličtina
Rok vydání: 1993
Předmět:
Zdroj: International Journal of Mathematics and Mathematical Sciences, Vol 16, Iss 4, Pp 679-686 (1993)
Druh dokumentu: article
ISSN: 0161-1712
1687-0425
01611712
DOI: 10.1155/S0161171293000857
Popis: This paper utilizes the method of extremal length to study several diameter problems for functions conformal outside of a disc centered at the origin, with a standard normalization, which possess a quasiconformal extension to a ring subdomain of this disc. Known results on the diameter of a complementary component of the image domain of a univalent function are extended. Applications to the transfinite diameters of families of non-overlapping functions and an extension of the Koebe one-quarter theorem are included.
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