On a Riemann Boundary Value Problem in the Half-plane in the Class of Weighted Continuous Functions
- Authors: Hayrapetyan H.M.1, Aghekyan S.A.1
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Affiliations:
- Yerevan State University
- Issue: Vol 54, No 2 (2019)
- Pages: 79-89
- Section: Real and Complex Analysis
- URL: https://journals.rcsi.science/1068-3623/article/view/228296
- DOI: https://doi.org/10.3103/S1068362319020043
- ID: 228296
Cite item
Abstract
Let C(ρ) be the class of functions f such that f(x)ρ(x) is continuous on (−∞,+∞). In the upper half-plane of complex plane z we consider the Riemann boundary value problem in the weighted space C(ρ) with \(\rho \left( x \right) = \prod\limits_{k = 1}^m {{{\left| {\frac{{x - {x_k}}}{{x + i}}} \right|}^{{\alpha _k}}}} \), where αk and xk are real numbers, k = 1, 2,...,m. The problem is to determine an analytic in the upper and lower half-planes function Φ(z) to satisfy \(\mathop {\lim }\limits_{y \to + 0} {\left\| {{\Phi ^ + }\left( {x + iy} \right) - a\left( x \right){\Phi ^ - }\left( {x - iy} \right) - f\left( x \right)} \right\|_{C\left( \rho \right)}} = 0\), where f ∈ C(ρ), a(x) ∈ Cδ[−A;A] for any A > 0, a(x) ≠ 0, the limit \(\mathop {\lim }\limits_{\left| x \right| \to \infty } a\left( x \right) = a\left( \infty \right)\) exists and |a(x) − a(∞)| < C|x|-δ for |x| ≥ A > 0. The normal solvability of this problem is established.
About the authors
H. M. Hayrapetyan
Yerevan State University
Author for correspondence.
Email: hhayrapet@gmail.com
Armenia, Yerevan
S. A. Aghekyan
Yerevan State University
Author for correspondence.
Email: smbat.aghekyan@gmail.com
Armenia, Yerevan