APPLIED MATHEMATICS AND COMPUTATION, vol.270, pp.644-647, 2015 (SCI-Expanded)
Recently, several papers emerged in the literature discussing the determinant, the spectrum, and the inverse of the so-called k-tridiagonal matrices. The aim of this comment is to provide a general, unified, and attractive approach to them, recalling some less known results. (C) 2015 Elsevier Inc. All rights reserved.