Abstract: The problem of solving systems of linear algebraic equations (SLAEs) is connected with finding the eigenvalues of the matrix of the system. Often it is necessary to solve SLAEs with positive definite symmetric matrices. The eigenvalues of such matrices are real and positive. Here we propose an interpolation method for finding eigenvalues of such matrices. The proposed method can also be used to calculate the real eigenvalues of an arbitrary matrix with real elements. This method uses splines of Lagrangian type of fifth order and/or polynomial integro-differential splines of fifth order. To calculate the eigenvalue, it is necessary to calculate several determinants and solve the nonlinear equation. Examples of numerical experiments are given.
DOI: *As the DOI is a unique identifier, it is already available in the pdf version. **The DOI link will be activated in the first midst of January 2026.
WSEAS Transactions on Systems and Control, ISSN / E-ISSN: 1991-8763 / 2224-2856, Volume 14, 2019, Art. #13
I. G. Burova, V. M. Ryabov, M. A. Kalnitskaia, A. V. Malevich, "The Interpolation Method for Calculating Eigenvalues of Matrices," WSEAS Transactions on Systems and Control, vol. 14, pp. 104-111, 2019, DOI:
I. G. Burova, V. M. Ryabov, M. A. Kalnitskaia, A. V. Malevich. The Interpolation Method for Calculating Eigenvalues of Matrices.
WSEAS Transactions on Systems and Control. 2019;14:104-111.