Modification of successive approximation method in generalized spectrum problems for quadratic matrix beams

The case of the eigenvalue problem of the quadratic matrix beam is proposed. The method permits one to calculate all eigenpairs of the matrix beam. With this aim, the generalized eigenvalue problem is reduced to a linear problem. Then, the modified successive approximations method is used for calculation of the eigenvalues and eigenvectors. This permits the use of the information obtained from the iterations, to obtain the first eigenpair and all the following ones more quickly. Some numerical examples are considered.