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Topic: Help - Striped matrices
Replies: 2   Last Post: Jun 13, 1996 9:39 PM

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Victor Eijkhout

Posts: 28
Registered: 12/10/04
Re: Help - Striped matrices
Posted: Jun 13, 1996 4:01 PM
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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.
--
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http://www.math.ucla.edu/~eijkhout/







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