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On the solvability of a boundary value problem for the Laplace equation on a screen with a boundary condition for a directional derivative

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Abstract

We consider a three-dimensional boundary value problem for the Laplace equation on a thin plane screen with boundary conditions for the “directional derivative”: boundary conditions for the derivative of the unknown function in the directions of vector fields defined on the screen surface are posed on each side of the screen. We study the case in which the direction of these vector fields is close to the direction of the normal to the screen surface. This problem can be reduced to a system of two boundary integral equations with singular and hypersingular integrals treated in the sense of the Hadamard finite value. The resulting integral equations are characterized by the presence of integral-free terms that contain the surface gradient of one of the unknown functions. We prove the unique solvability of this system of integral equations and the existence of a solution of the considered boundary value problem and its uniqueness under certain assumptions.

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Authors and Affiliations

  1. Lomonosov Moscow State University, Moscow, Russia

    A. V. Setukha & D. A. Yukhman

  2. Institute of Numerical Mathematics, Moscow, Russia

    A. V. Setukha & D. A. Yukhman

Authors
  1. A. V. Setukha
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  2. D. A. Yukhman
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Correspondence to A. V. Setukha.

Additional information

Original Russian Text © A.V. Setukha, D.A. Yukhman, 2016, published in Differentsial’nye Uravneniya, 2016, Vol. 52, No. 9, pp. 1231–1241.

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Setukha, A.V., Yukhman, D.A. On the solvability of a boundary value problem for the Laplace equation on a screen with a boundary condition for a directional derivative. Diff Equat 52, 1188–1198 (2016). https://doi.org/10.1134/S001226611609010X

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  • DOI: https://doi.org/10.1134/S001226611609010X

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