If you post the matrix, possibly somebody will find a workaround for you; without the matrix, it's pure guessing. If at all
possible, try to simplify the example as much as possible--maybe assign numeric values to various symbols, for example.
The error message "part fell of the end" indicates that the eigenvector code doesn't handle a case as well as it
might. This is a bug--you should file a report. At worst the eigenvector code might give a message something
like "unable find roots of <large degree polynomial>".
--Barton
________________________________________
From: maxima-bounces at math.utexas.edu [maxima-bounces at math.utexas.edu] on behalf of Yury Tarasievich [yury.tarasievich at gmail.com]
Sent: Sunday, July 28, 2013 10:00
To: maxima at math.utexas.edu
Subject: eigenvalues, part: fell off the end
Hi guys,
On Maxima 5.30/linux/amd64, I'm getting this
with fairly simple block-diagonal symbolic
matrix of 10x10 and/or 11x11 dimension:
E:eigenvalues(opH)
part: fell off the end.
But with matrix of dimension 9x9 and lower the
routine completes okay.
What could/should I try? Should I post the
matrix in the form it's 'print'ed, too?
The alt_eigen solution recommended earlier in
this list can't pass its own tests on 5.30.
Is there anything else?
-Yury
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