Abstract <p>The second boundary value problem for the three-dimensional model equation with two planes of type change in a parallelepiped is investigated. A necessary condition and a criterion for the uniqueness of its solution are established.</p>

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On the Uniqueness of the Solution of the Neumann Problem for a Three-dimensional Equation of Mixed Type with Two Planes of Type Change in a Parallelepiped

  • A. A. Gimaltdinova

摘要

Abstract

The second boundary value problem for the three-dimensional model equation with two planes of type change in a parallelepiped is investigated. A necessary condition and a criterion for the uniqueness of its solution are established.