next up previous
Next: About this document ...

Ron Morgan
Krylov Methods for Difficult Eigenvalue Problems

Math Department
Baylor University
Waco
TX 76798-7328
Ronald_Morgan@baylor.edu

We will discuss new Krylov methods for computing eigenvalues and eigenvectors. These include a multigrid method that improves by doing much of the computation on coarse grids. Also, a polynomial preconditioned Arnoldi can significantly speed up difficult eigenvalue problems. And for very difficult problems, a new method needs two iterations, but can compute eigenvectors without either restarting or saving a large subspace.





root 2016-02-22