On Fri, Jul 8, 2011 at 10:06 PM, leif wrote:
> On 9 Jul., 01:52, William Stein wrote:
>> The main fileserver for the sage.math cluster has had a major hardware
>> failure.
>> Fortunately, I do have a working recent backup, and will be able to
>> eventually
>> restore functionality. Rebuilding
More adventures with free module morphisms. Matrix representations
are relative to the bases of the domain and codomain.
sage: V = (QQ^3).subspace_with_basis([[1,0,0], [0,0,1]])
sage: H = Hom(V, V)
For phi, the list of lists is interpreted as images of the basis
elements of V, as elements of QQ^
On 9 Jul., 01:52, William Stein wrote:
> The main fileserver for the sage.math cluster has had a major hardware
> failure.
> Fortunately, I do have a working recent backup, and will be able to eventually
> restore functionality. Rebuilding /home in order to do this will take
> hopefully at most
On Jul 7, 12:55 am, Francis Clarke wrote:
> All this should be simple to fix.
Sounds good. With a fix for equality, there is still an outstanding
problem with comparisons of free modules. Presently,
"Modules are ordered by their ambient spaces, then by dimension, then
in order by their echelon
On Fri, Jul 8, 2011 at 4:39 PM, Some User wrote:
> Dear William,
>
> I found that
> my account was cancelled this morning. I can loggin to the server but my
> file root "/home/xxx" was deleted. Hence I cann't use sage any more. I
> note that many accounts were deleted. What happens?
The main files
Email from William:
Hi,
The main NFS file server for the sagemath cluster appears to have
completely failed. It won't turn on at all, not even the management
interface.
This means that *all* services related to sage.math (e.g., wiki's,
trac, sagemath.org, etc.) are completely down.
On Fri, Jul
Maybe I missed some announcement?
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On 8 juil, 16:05, Jeroen Demeyer wrote:
> On 2011-07-08 15:15, Vincent D wrote:
>
> > Actually, the problem is even worst... the function relabel does not
> > do the right job! The graph G2 obtained as above has two loops at the
> > vertex 4.
>
> Well, to what does to vertex 4 get mapped to under
Ok, I put a new version of the example up at:
http://trac.sagemath.org/sage_trac/attachment/ticket/11583/
It removes the entire section of graphs by making a \begin{comment}
\end{comment} block of it together with a notice of how to enable it again.
I hope this will make more people use sagetex
On 2011-07-08 15:15, Vincent D wrote:
> Actually, the problem is even worst... the function relabel does not
> do the right job! The graph G2 obtained as above has two loops at the
> vertex 4.
Well, to what does to vertex 4 get mapped to under your "permutation"?
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>
> How did you get simply "False"? I always get (False, False) on the last
> line, with sage-4.6, sage-4.6.2, sage-4.7 and sage-4.7.1.alpha3.
>
I also get "(False,False)" but expected "True"! I did a wrong copy-
paste operation.
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On 2011-07-08 15:09, Vincent D wrote:
> {{{
> sage: G1 = DiGraph(loops=True,multiedges=True)
> sage: G1.add_edges([
> ...(0, 0, 'c'), (0, 4, 'b'), (0, 5, 'c'), (0, 5, 't'), (1, 1,
> 'c'),
> ...(1, 3,'c'), (1, 3, 't'), (1, 5, 'b'), (2, 2, 'c'), (2, 3,
> 'b'),
> ...(2, 4, 'c'),(2, 4, 't')
Actually, the problem is even worst... the function relabel does not
do the right job! The graph G2 obtained as above has two loops at the
vertex 4.
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Hello,
I get the following bug on canonical labeling of a nice symmetric
directed graph.
{{{
sage: G1 = DiGraph(loops=True,multiedges=True)
sage: G1.add_edges([
...(0, 0, 'c'), (0, 4, 'b'), (0, 5, 'c'), (0, 5, 't'), (1, 1,
'c'),
...(1, 3,'c'), (1, 3, 't'), (1, 5, 'b'), (2, 2, 'c'), (2, 3,
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