A novel approach to determination of a transition function with repeated eigenvalues constant matrix
Kao‐Shing Hwang, Min-Cheng Tsai, Feng-Cheng Chang · International Journal of Computer Mathematics · 2000
An analytical function of a matrix with repeated eigenvalues is expressed in terms of constituent matrices. Two approaches to computing the constituent matrices are then presented. For a special case of a companion matrix, the computation can be greatly simplified.