The Characteristic Polynomial of Some Perturbed Tridiagonal k-Toeplitz Matrices 1

@inproceedings{Fonseca2006TheCP,
  title={The Characteristic Polynomial of Some Perturbed Tridiagonal k-Toeplitz Matrices 1},
  author={Carlos M. da Fonseca},
  year={2006}
}
We generalize some recent results on the spectra of tridiagonal matrices, providing explicit expressions for the characteristic polynomial of some perturbed tridiagonal k-Toeplitz matrices. The calculation of the eigenvalues (and associated eigenvectors) follows straightforward. Mathematics Subject Classification: 15A18, 42C05, 33C45