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JOURNALS // Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp'yuternye Nauki // Archive

Vestn. Udmurtsk. Univ. Mat. Mekh. Komp. Nauki, 2013 Issue 2, Pages 27–34 (Mi vuu374)

This article is cited in 1 paper

MATHEMATICS

On behaviour of solution of boundary value problem for generalized Cauchy–Riemann equation

A. S. Il'chukov

Syktyvkar State University, Syktyvkar, Russia

Abstract: The following boundary value problem for generalized Cauchy–Riemann equation in the unit disk $G = \{z \in \mathbb{C}: |z| < 1 \}$ is considered in the paper: $\partial_{\overline{z}} w + b(z) \overline{w} = 0,$ $\Re w = g$ on $\partial G,$ $\Im w = h$ at the point $z_0 = 1.$ The coefficient $b(z)$ is chosen from some set $S_P,$ constructed by scales, with $S_P \subsetneq L_2,$ $S_P \not\subset L_q,$ $q > 2.$ The boundary value $g$ is chosen from the space, constructed by a modulus of continuity $\mu$ with some special properties. It is shown that the problem has unique solution $w = w(z)$ in the unit disk $G$ with $w \in C(\overline{G}).$ Moreover, outside the point $z = 0$ the behaviour of the solution $w(z)$ is defined by the same modulus of continuity $\mu;$ it means there is no “logarithmic effect” for the solution.

Keywords: generalized Cauchy–Riemann equation, Dirichlet problem, modulus of continuity.

UDC: 517.53

MSC: 30E25

Received: 01.04.2013



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