Univalent Harmonic Mappings of Annuli
Abdallah Lyzzaik (2004)
Publications de l'Institut Mathématique
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Abdallah Lyzzaik (2004)
Publications de l'Institut Mathématique
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Miloš Arsenović, Miroslav Pavlović (2017)
Czechoslovak Mathematical Journal
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We prove two Dyakonov type theorems which relate the modulus of continuity of a function on the unit disc with the modulus of continuity of its absolute value. The methods we use are quite elementary, they cover the case of functions which are quasiregular and harmonic, briefly hqr, in the unit disc.
W. Hengartner, L. Nadeau (1988)
Matematički Vesnik
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Kaljaj, David (2001)
Publications de l'Institut Mathématique. Nouvelle Série
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Ahuja, Om P. (2005)
JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
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Sumit Nagpal, V. Ravichandran (2013)
Annales Polonici Mathematici
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The hereditary properties of convexity and starlikeness for conformal mappings do not generalize to univalent harmonic mappings. This failure leads to the notions of fully starlike and fully convex mappings. In this paper, properties of fully starlike mappings of order α and fully convex mappings of order α (0 ≤ α < 1) are studied; in particular, the bounds for the radius of full starlikeness of order α as well as the radius of full convexity of order α are determined for certain...
Ilkka Holopainen, Seppo Rickman (1992)
Revista Matemática Iberoamericana
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Andrzej Michalski (2008)
Annales UMCS, Mathematica
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In this paper we introduce a class of increasing homeomorphic self-mappings of R. We define a harmonic extension of such functions to the upper halfplane by means of the Poisson integral. Our main results give some sufficient conditions for quasiconformality of the extension.
B. Bojarski, T. Iwaniec (1987)
Banach Center Publications
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D. Bshouty, N. Hengartner, ... (1989)
Numerische Mathematik
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Kilpeläinen, Tero (1994)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Bent Fuglede (1978)
Annales de l'institut Fourier
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A harmonic morphism between Riemannian manifolds and is by definition a continuous mappings which pulls back harmonic functions. It is assumed that dim dim, since otherwise every harmonic morphism is constant. It is shown that a harmonic morphism is the same as a harmonic mapping in the sense of Eells and Sampson with the further property of being semiconformal, that is, a conformal submersion of the points where vanishes. Every non-constant harmonic morphism is shown to be...
Abdulhadi, Zayid (2002)
International Journal of Mathematics and Mathematical Sciences
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Magdalena Sobczak-Kneć, Viktor V. Starkov, Jan Szynal (2011)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica
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The relation between the Jacobian and the orders of a linear invariant family of locally univalent harmonic mapping in the plane is studied. The new order (called the strong order) of a linear invariant family is defined and the relations between order and strong order are established.