#15835: Smith Normal Form Integers Mod 2 TypeError: submatrix() takes exactly 4
positional arguments(2 given)
-------------------------------------+-------------------------------------
Reporter: andrewsilver | Owner:
Type: defect | Status: needs_work
Priority: minor | Milestone: sage-6.2
Component: linear algebra | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/andrewsilver/ticket/15835 | feb0831bb267b164837e73ee2801f080b7e15bb6
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by fwclarke):
* status: needs_review => needs_work
Comment:
Replying to [comment:13 andrewsilver]:
> For the dockets, is taking the sub-matrix of an identity matrix
(integers mod 2) sufficient?
You must have the same spellchecker as me!
Yes something like
{{{
sage: A = identity_matrix(GF(2), 6)
sage: A.submatrix(3, 2)
[0 1 0 0]
[0 0 1 0]
[0 0 0 1]
}}}
would do. And, as there also needs to be a doctest for the case of higher
degree finite fields of characteristic 2, perhaps
{{{
sage: F8.<a> = GF(8)
sage: A = matrix(4, 4, [a^i for i in range(16)])
sage: A.submatrix(2, 1)
[ a^2 a + 1 a^2 + a]
[a^2 + 1 1 a]
}}}
Of course there should be a doctest for `smith_form` too.
--
Ticket URL: <http://trac.sagemath.org/ticket/15835#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/groups/opt_out.
