On Thu, Apr 16, 2009 at 10:22 AM, Yixun Liu <enjoywm at cs.wm.edu> wrote:
> Hi, > For Ax=b, A is mxn, m>n. I use CG to resolve it and find the solution > makes no sense. I guess rank(A) < min(m,n). How to resolve this > singular system? Use SVD? CG is a method for SPD matrices. This matrix is not symmetric. You appear to be solving a least squares problem. I would read about these a little. Ake Bjorck has a pretty good book. Matt > > Best, > > Yixun > -- What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead. -- Norbert Wiener -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20090416/7ad17808/attachment.htm>
