A remark on polygonal quasiconformal maps.
Krushkal, S.L. (2001)
Georgian Mathematical Journal
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Krushkal, S.L. (2001)
Georgian Mathematical Journal
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Dariusz Partyka, Ken Sakan, Józef Zając (1999)
Banach Center Publications
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Different aspects of the boundary value problem for quasiconformal mappings and Teichmüller spaces are expressed in a unified form by the use of the trace and extension operators. Moreover, some new results on harmonic and quasiconformal extensions are included.
Dimitrios Betsakos (1999)
Colloquium Mathematicae
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Let a,b ∈ z: 0<|z|<1 and let S(a,b) be the class of all univalent functions f that map the unit disk into {a,bwith f(0)=0. We study the problem of maximizing |f’(0)| among all f ∈ S(a,b). Using the method of extremal metric we show that there exists a unique extremal function which maps onto a simply connnected domain bounded by the union of the closures of the critical trajectories of a certain quadratic differential. If a<0
Krushkal, Samuel L. (2003)
Georgian Mathematical Journal
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Dariusz Partyka (1991)
Annales Polonici Mathematici
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We give a distortion theorem for quasiconformal automorphisms of the unit disk and its application to improving some results due to Douady and Earle.
Clop, Albert (2007)
Annales Academiae Scientiarum Fennicae. Mathematica
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Chen, Sh., Ponnusamy, S., Wang, X. (2011)
Bulletin of the Malaysian Mathematical Sciences Society. Second Series
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Dariusz Partyka (1995)
Banach Center Publications
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This paper provides sufficient conditions on a quasisymmetric automorphism γ of the unit circle which guarantee the existence of the smallest positive eigenvalue of γ. They are expressed by means of a regular quasiconformal Teichmüller self-mapping φ of the unit disc Δ. In particular, the norm of the generalized harmonic conjugation operator is determined by the maximal dilatation of φ. A characterization of all eigenvalues of a quasisymmetric automorphism γ in terms of the smallest...
Zapadinskaya, Aleksandra (2008)
Annales Academiae Scientiarum Fennicae. Mathematica
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David Kalaj (2004)
Publications de l'Institut Mathématique
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Urban Cegrell, Johan Thorbiörnson (1996)
Annales Polonici Mathematici
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We study different notions of extremal plurisubharmonic functions.
O. Martio (1995)
Banach Center Publications
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We present a survey of the Lusin condition (N) for -Sobolev mappings defined in a domain G of . Applications to the boundary behavior of conformal mappings are discussed.
Anderson, J.Milne, Vasil'ev, Alexander (2008)
Annales Academiae Scientiarum Fennicae. Mathematica
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