A block representation of the BLU factorization for block tridiagonal matrices is presented. Some properties on the factors obtained in the course of the factor
A matrix is similar to Jordan canonical form over the complex field and the rational canonical form over a number field, respectively. In this paper, we further
The main purpose of this paper is to solve the class equation in an alternating group, (i.e. find the solutions set ) and find the number of these solutions whe