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JOURNALS // Ufimskii Matematicheskii Zhurnal // Archive

Ufimsk. Mat. Zh., 2018 Volume 10, Issue 4, Pages 111–122 (Mi ufa453)

This article is cited in 14 papers

Third double-layer potential for a generalized bi-axially symmetric Helmholtz equation

T. G. Ergashev

Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Kari-Niyaz str. 39, 100000, Tashkent, Uzbekistan

Abstract: The double-layer potential plays an important role in solving boundary value problems for elliptic equations, and in studying this potential, the properties of the fundamental solutions of the given equation are used. At present, all fundamental solutions to the generalized bi-axially symmetric Helmholtz equation are known but nevertheless, only for the first of them the potential theory was constructed. In this paper we study the double layer potential corresponding to the third fundamental solution. By using properties of Appell hypergeometric functions of two variables, we prove limiting theorems and derive integral equations involving the density of double-layer potentials in their kernels.

Keywords: generalized bi-axially symmetric Helmholtz equation, Green formula, fundamental solution, third double-layer potential, Appell hypergeometric functions of two variables, integral equations with a density of double-layer potential in their kernel.

UDC: 517.956

MSC: 35A08, 35J05, 35J15, 35J70

Received: 01.08.2017


 English version:
Ufa Mathematical Journal, 2018, 10:4, 111–121

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© Steklov Math. Inst. of RAS, 2026