Geodesic
On correct solvability of Dirichlet problem in a half-space for regular equations with non-homogeneous boundary conditions
Proceedings of the Yerevan State University. Physical and mathematical sciences, Tome 57 (2023) no. 2, pp. 44-50.

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In this paper we consider the following Dirichlet problem with non-homogeneous boundary conditions in a multianisotropic Sobolev space $W_2^{\mathfrak{M}}(R^2 \times R_+)$ $$ \begin{cases} P(D_x, D_{x_3}) u = f(x, x_3), \quad x_3 > 0, \quad x \in R^2, \\ D_{x_3}^s u \big\rvert_{x_3 = 0} = \varphi_s(x),\quad s = 0, \dots, m-1. \end{cases} $$ It is assumed that $P(D_x, D_{x_3})$ is a multianisotopic regular operator of a special form with a characteristic polyhedron $\mathfrak{M}$. We prove unique solvability of the problem in the space $W_2^{\mathfrak{M}}(R^2 \times R_+)$, assuming additionally, that $f(x, x_3)$ belongs to $L_2(R^2 \times R^+)$ and has a compact support, boundary functions $\varphi_s$ belong to special Sobolev spaces of fractional order and have compact supports.
Keywords: regular operator, characteristic polyhedron, multianisotropic Sobolev space. 
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M. A. Khachaturyan. On correct solvability of Dirichlet problem in a half-space for regular equations with non-homogeneous boundary conditions. Proceedings of the Yerevan State University. Physical and mathematical sciences, Tome 57 (2023) no. 2, pp. 44-50. http://geodesic.mathdoc.fr/item/UZERU_2023_57_2_a1/

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