[SciPy-user] Interaction of sparse and dense matrices in scipy

Arnd Baecker arnd.baecker at web.de
Tue Feb 21 06:47:09 CST 2006

Hi Nils,

On Tue, 21 Feb 2006, Nils Wagner wrote:


> May I send you my (sparse/dense) codes for solving large Sylvester
> equations.
> The results of the dense version are o.k. while the sparse version
> doesn't work as expected.
> I hope you can drop some hints ;-) .

It seems that you are becoming the sparse expert!
Would it be possible that you collect the information on sparse matrices
in the http://www.scipy.org/Cookbook?
Something like
with (e.g.) topics like:
  - sparse matrix formats
  - operations with sparse matrices
  - operations on sparse matrics
  - solving sparse matrix eigenvalue problems
    - presumably best on a subpage
would be extremely helpful.
Your code on solving large Sylvester equations
would surely be interesting as well.



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