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M. Mateljević

Publications and source records attributed to M. Mateljević.

3 recordsLinked to original sources

Green function for $T_α$-Laplacian in higher dimensions

Through this article we will use a notation \begin{equation}\label{alfaLap} T_αu(x)=(1-|x|^2)Δu(x)+2 α\langle x,\nabla u(x)\rangle + (n-2-α) αu(x). \end{equation} Here, $|x|<1$ and $α>-1$. Also, for $x=x(x_1,x_2,\ldots,x_n)\in \mathbb{R}^n$ we use $|x|=\sqrt{x_1^2+x_2^2+\ldots+x_n^2}, \nabla =(\frac{\partial}{\partial x_1},\frac{\partial}{\partial x_2},\ldots,\frac{\partial}{\partial x_n}),Δ=\frac{\partial^2}{\partial x_1^2}+\frac{\partial^2}{\partial x_2^2}+\ldots+\frac{\partial^2}{\partial x_n^2}.$ The purpose of this paper is to investigate a Dirichlet problem, corresponding to above mentioned PDE. We will specificaly consider non-homogenous boundary value problem. In that purpose the explicit formula for Green function assosiated to the operator (\ref{alfaLap}) will be calculated, and also, we will present the corresponding representation theorem.

math.CV↗

The Boundary Schwarz lemma for harmonic and pluriharmonic mappings and some generalisations

The main purpose of this paper is to develop some methods to investigate the Schwarz type lemmas of holomorphic mappings and pluriharmonic mappings in Hilbert and Banach spaces. Initially, we extend the classical Schwarz lemmas of holomorphic mappings to Hilbert and Banach spaces. Furthermore, we improve and generalize the classical Schwarz lemmas of planar harmonic mappings into the sharp forms of Banach spaces, and present some applications to sharp boundary Schwarz type lemmas for pluriharmonic mappings in Hilbert and Banach spaces and the obtained results provide the improvements and generalizations of some latest corresponding results in this subject. In the last section we studied harmonic and hyperbolical-harmonic function mapping unit ball in Euclidial n-space, to unit ball in Euclidial m-space, taking prescribed value in the origin, which improved some previous results.

math.CV↗

Lipschitz type spaces and Landau-Bloch type theorems for harmonic functions and Poisson equations

In this paper, we investigate some properties on harmonic functions and solutions to Poisson equations. First, we will discuss the Lipschitz type spaces on harmonic functions. Secondly, we establish the Schwarz-Pick lemma for harmonic functions in the unit ball $\IB^n$ of $\IR^n$, and then we apply it to obtain a Bloch theorem for harmonic functions in Hardy spaces. At last, we use a normal family argument to extend the Landau-Bloch type theorem to functions which are solutions to Poisson equations.

math.CV↗