2009/9/15 kcrisman <kcris...@gmail.com>:
>
>> > As for you for now, you'd need to change the eigenvectors() command in
>> > the matrix code. If you wanted to do so and submit a patch, it would be
>> > greatly appreciated!
>>
>
> But all doctests pass for me in alpha1:
>
> ./sage -t "devel/sage/sage/matrix/"
> All tests passed!
> Total time for all tests: 177.1 seconds
I get slightly different results, with two known (hopefully :-)
"minor" problems:
% sage -t "devel/sage/sage/matrix/"
...
sage -t "devel/sage/sage/matrix/matrix_double_dense.pyx"
**********************************************************************
File "/usr/share/sage/devel/sage/sage/matrix/matrix_double_dense.pyx", line 996:
sage: V
Expected:
[-0.392540507864 0.824163383692 0.408248290464]
[-0.560772154092 0.137360563949 -0.816496580928]
[ -0.72900380032 -0.549442255795 0.408248290464]
Got:
[-0.392540507864 0.824163383692 -0.408248290464]
[-0.560772154092 0.137360563949 0.816496580928]
[ -0.72900380032 -0.549442255795 -0.408248290464]
**********************************************************************
1 items had failures:
1 of 27 in __main__.example_28
***Test Failed*** 1 failures.
...
sage -t "devel/sage/sage/matrix/constructor.py"
**********************************************************************
File "/usr/share/sage/devel/sage/sage/matrix/constructor.py", line 155:
sage: g = graphs.PetersenGraph()
Expected nothing
Got:
doctest:16: DeprecationWarning: the sets module is deprecated
doctest:18: DeprecationWarning:
**********************************************************
matplotlib.numerix and all its subpackages are deprecated.
They will be removed soon. Please use numpy instead.
**********************************************************
<BLANKLINE>
**********************************************************************
1 items had failures:
1 of 94 in __main__.example_1
***Test Failed*** 1 failures.
...
>> maxima-5.19.1 can be found in Sage sage-4.1.2.alpha1, but being an
>> alpha, it is likely to be less stable than a 'stable' release of Sage.
>> Note Sage 4.1.2 will be the first Sage to have a recent update of
>> Maxima. The previous version, 4.1.1, does not.
>
> That's #6699 where the change went in. Note that the patch there
> fixes similar eigenvector problems in doc/en/constructions/
> linear_algebra.rst and doc/en/tutorial/interfaces.rst, and, for that
> matter, sage/interfaces/maxima.py
Many Thanks!! I just made a local build with
http://trac.sagemath.org/sage_trac/attachment/ticket/6699/maxima_doctests.patch
applied, and now the maxima tutorial works correctly.
> But actually, the problem is already in 4.1.1, with the previous
> Maxima:
>
> ----------------------------------------------------------------------
> | Sage Version 4.1.1, Release Date: 2009-08-14 |
> | Type notebook() for the GUI, and license() for information. |
> ----------------------------------------------------------------------
> sage: A = matrix(SR, [[1,2,3],[4,5,6],[7,8,9]])
> sage: A.eigenvectors_right()
> UserWarning: Using generic algorithm for an inexact ring, which may
> result in garbage from numerical precision issues.
> # -*- coding: utf-8 -*-
> UserWarning: Using generic algorithm for an inexact ring, which will
> probably give incorrect results due to numerical precision issues.
> # -*- coding: utf-8 -*-
> TypeError: degree() takes exactly one argument (0 given)
> sage: maxima_console()
> Maxima 5.16.3 http://maxima.sourceforge.net
>
> For some reason SR eigenvectors were never actually tested, I think -
> because they inherit directly from matrix2.pyx! In fact, the error
> comes from eigenspaces_left in that file, where G = self.fcp() calls
> degree of a symbolic expression, which now requires an argument ! The
> symbolic upgrade strikes again... I'll try to have a patch for this
> soon.
>
> - kcrisman
Paulo
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