Displaying similar documents to “Biharmonic morphisms”

On generalized f -harmonic morphisms

A. Mohammed Cherif, Djaa Mustapha (2014)

Commentationes Mathematicae Universitatis Carolinae

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In this paper, we study the characterization of generalized f -harmonic morphisms between Riemannian manifolds. We prove that a map between Riemannian manifolds is an f -harmonic morphism if and only if it is a horizontally weakly conformal map satisfying some further conditions. We present new properties generalizing Fuglede-Ishihara characterization for harmonic morphisms ([Fuglede B., Harmonic morphisms between Riemannian manifolds, Ann. Inst. Fourier (Grenoble) 28 (1978), 107–144],...

Harmonic morphisms between riemannian manifolds

Bent Fuglede (1978)

Annales de l'institut Fourier

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A harmonic morphism f : M → N between Riemannian manifolds M and N is by definition a continuous mappings which pulls back harmonic functions. It is assumed that dim M ≥ dim N , 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 d f vanishes. Every non-constant harmonic morphism is shown to be...

On separately subharmonic functions (Lelong’s problem)

A. Sadullaev (2011)

Annales de la faculté des sciences de Toulouse Mathématiques

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The main result of the present paper is : every separately-subharmonic function u ( x , y ) , which is harmonic in y , can be represented locally as a sum two functions, u = u * + U , where U is subharmonic and u * is harmonic in y , subharmonic in x and harmonic in ( x , y ) outside of some nowhere dense set S .

Superharmonic extension and harmonic approximation

Stephen J. Gardiner (1994)

Annales de l'institut Fourier

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Let Ω be an open set in ℝ n and E be a subset of Ω . We characterize those pairs ( Ω , E ) which permit the extension of superharmonic functions from E to Ω , or the approximation of functions on E by harmonic functions on Ω .

ℋ p -spaces of harmonic functions

Linda Lumer-Naïm (1967)

Annales de l'institut Fourier

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Sous les hypothèses standard de l’axiomatique Brelot, étude de classes de fonctions harmoniques complexes définies comme les classes de Hardy classiques. Caractérisation comme solutions de problèmes de Dirichlet avec la frontière minimale, les filtres fins, et données-frontière dans L p , pour 1 < p ≤ + ∞ , comme intégrales de mesures complexes finies sur la frontière minimale, pour p = 1 . Existence presque-partout à la frontière minimale d’une limite fine finie ∈ L p . Application à deux théorèmes du type...