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The PE_κ Method for Solving Linear Algebraic Equations Derived from Discretizing Elliptic Partial Differential Equation with Periodic Boundary Conditions

Kaiyuan Zhang

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Abstract

In this paper, we propose the PEκ method for solving a system of large scale linear algebraic equations with periodic block-tridiagonal matrix. Under the condition that the coefficient matrix is Hermitian positive definite, the solvability and convergence of the new method are proved, and the selection range for the parameter κ is given. For the example in this paper, the computation time of the PE2 method is only 50 percent of that of the SBGS method.

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What this paper is about

In this paper, we propose the PEκ method for solving a system of large scale linear algebraic equations with periodic block-tridiagonal matrix. Under the condition that the coefficient matrix is Hermitian positive definite, the solvability and convergence of the new method are proved, and the selection range for the parameter κ is given. For the example in this paper, the computation time of the PE2 method is only 50 percent of that of the SBGS method.

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Available abstract

In this paper, we propose the PEκ method for solving a system of large scale linear algebraic equations with periodic block-tridiagonal matrix. Under the condition that the coefficient matrix is Hermitian positive definite, the solvability and convergence of the new method are proved, and the selection range for the parameter κ is given. For the example in this paper, the computation time of the PE2 method is only 50 percent of that of the SBGS method.

Key concepts: Mathematics, Coefficient matrix, Mathematical analysis, Elliptic partial differential equation, Tridiagonal matrix, Discretization, Matrix (chemical analysis), Boundary value problem

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