[Maxima] patch for eigenvector to consider
eric.reyssat at math.unicaen.fr
Tue Jul 28 05:08:13 CDT 2009
Robert Dodier a écrit :
> (%i2) [vals, vecs] : eigenvectors (M1);
> (%o2) [[[0, 2], [2, 2]], [[[1, 0, 0, 0]],
> [[0, 0, 1, 0], [0, 0, 0, 1]]]]
> I'm inclined to apply the patch because without it, the output
> is pretty much incomprehensible when there are multiple
> eigenvectors per eigenvalue. Yes / no / maybe ??
> Thanks for your comments.
I find a list of triples
[[val1,mul1,[list of vecs1]],...,[valk,mulk,[list of vecsk]]]
easier to read (each vector being "near" its eigenvalue), but it may be slightly more difficult to use (extracting the list of all eigenvectors is quite frequent).
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