I'm to code the Eigen solver in Matlab for a reserach project. The project concerned might also give me complex eigen values. I have been formulating the algorithm for Vector iteration method (or otherwise called the Power method) for the computation of eigen values/eigen vectors. The method fails when there is no dominant eigen value. Please can anyone suggest about the method to be used for coding Eigen solver? Can vector iteeration solve for complex eigen values? Can vector ietartion calculate all eigen values? Please can anyone comment on JAcobi/Lanczos solver pleasE?