Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: Help  Striped matrices
Posted:
Jun 13, 1996 4:01 PM


In article <Dsy98s.MpB@ennews.eas.asu.edu> cochran@trcsun3.eas.asu.edu (Doug Cochran) writes:
> I have been trying to find information about a particular class of > sparse matrix with essentially no success. The class consists of > symmetric (or Hermetian) NxN matrices which are zero except on the > main diagonal and on additional diagonals uniformly spaced above and > below the main diagonal; e.g., > > [ * 0 0 * 0 0 * 0 0 * 0 ] > [ 0 * 0 0 * 0 0 * 0 0 * ] > [ 0 0 * 0 0 * 0 0 * 0 0 ] > [ * 0 0 * 0 0 * 0 0 * 0 ] > [ 0 * 0 0 * 0 0 * 0 0 * ] > [ 0 0 * 0 0 * 0 0 * 0 0 ] > [ * 0 0 * 0 0 * 0 0 * 0 ] > [ 0 * 0 0 * 0 0 * 0 0 * ] > [ 0 0 * 0 0 * 0 0 * 0 0 ] > [ * 0 0 * 0 0 * 0 0 * 0 ] > [ 0 * 0 0 * 0 0 * 0 0 * ]
With a uniform distribution this is simply 3 decoupled systems written in a somewhat involved way. You're basically looking at 3 matrices here.
Victor.  405 Hilgard Ave ................................. `We are in danger of getting Department of Mathematics, UCLA ............. government by the clueless, over Los Angeles CA 90024 ................. a place they've never been, using means phone: +1 310 825 2173 / 9036 ....... they don't posesess' [John Perry Barlow] http://www.math.ucla.edu/~eijkhout/



