I had the same problem, but it was easily fixed pre-pending Google's DNS to
/etc/resolv.conf
"nameserver 8.8.8.8"
Also, check that you can resolve other sites via the terminal "ping
google.com"
ERROR [transfer|run:135]: [Errno socket error] [Errno -2] Name or
service not known
Also, yes ^^ this
t; Can you start sage in the terminal?
>
> On Wed, May 8, 2019 at 4:16 AM Stefan W wrote:
> >
> > Apparently I now SageMath doesn't work anymore. If I try to start the
> Jupyter kernel for Sage
> > I now get errors about libntl.so.33 (see the log file attached).
> &
already available.
On Tuesday, May 7, 2019 at 11:20:16 AM UTC+3, jplab wrote:
>
> Hi Stefan,
>
> Polymake had some issues with gcc 7 in the past. I do not know if the
> following could help you:
>
> https://forum.polymake.org/viewtopic.php?f=10=579
>
> The latest versio
Hi,
I've followed the trac ticket 24905 and I've been able to succesfully build
the polymake extension for Sage.
I'm using SageMath 8.7 (that comes with its own gcc 7.2.0).The OS used was
Debian buster (10).
Thanks,
Stefan
On Tue, May 7, 2019 at 11:20 AM jplab wrote:
> Hi Stefan,
>
>
_id = {v: i for i, v in enumerate(V)}
nodes = [... for v in V]
That way you'd end up with the same result independent of the ordering in the
hashmap.
With that you can also construct more test cases that don't depend on that
ordering and work for python2 and python3.
Cheers,
Stefan
On Monday, 11 Mar
ot;group": "0", "name": "10"}]}
Another failing example is:
Graph({1: [2], 2: [7], 3: [10], 5: [7]}).show(method='js')
showing the nodes as:
2-3-10-7, 1-5
Replacing 10 by 9 results in the correct graph:
1-2-7-5, 3-9
Cheers,
Stefan
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We have two project suggestions so far. Any others? The deadline for SageMath
to submit its application is tomorrow morning!
—Stefan
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Please register me as mentor again.
On Tuesday, January 9, 2018 at 5:03:14 AM UTC-6, Harald Schilly wrote:
>
> Hello everyone. This year's Google Summer of Code started again. Are
> we applying again? Who wants to be a mentor for a student? First step
> is to get the application done and fill
is that
the root systems use different ambient spaces. What's extremely annoying is
that g.action(alpha) accepts a 4-touple without raising an exception.
Is there a plan of making the behavior more coherent or should one never
switch between the two implementations?
Best,
Stefan
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You received
reed. This is especially true for the Matroid class, where the ground set
can contain any hashable objects. The automatic label generator for
extensions will go for strings, so it's easy to get a mixture of strings
and integers.
--Stefan.
P.S. The Graph class does way too much sorting. See e.g.
sa
Is this behavior new? I got it on my MacBook running the latest development
version. And, more importantly, what is the recommended way of writing
doctests for functions that return frozen sets with strings and integers?
In particular in light of Python 3 coming up...
sage: sorted([1,2,'a'])
Be aware that this is not the mentor list, but the public list. Please
don't discuss content of the submitted proposals here.
-- Stefan
On Tuesday, April 4, 2017 at 6:25:45 AM UTC-5, Jean-Pierre Flori wrote:
>
>
> Thanks Harald.
> I did not realize so many of them were for my proje
> That does EXACTLY what I want, but now I run into a bug:
>
> R1 = ZZ['x0','x1']
> x = R1(1)
> R2 = ZZ[tuple('x'+str(i) for i in range(967))]
> y = R2('x0')
> x*y
>
> gives a RuntimeError: maximum recursion depth exceeded.
>
> The 967 is the smallest number in the Notebook that gives an error;
> Does this what you want?
>
> sage: R=ZZ['x1','x2','x3']
> sage: S=ZZ[R.gens()+('x4','x5')]
> sage: M=matrix(R,[1,2,3])
> sage: M.change_ring(S)
> [1 2 3]
>
> Variable names actually matter in sage, so there is automatically a
> coercion from R into S.
>
>
> That does EXACTLY what I want, but
a matrix
over R that I'd like to interpret as a matrix over
R-with-a-few-extra-variables.
What I get: only the ring S has the method extend_variables. Neither R nor
T have it. Why is that? What's the proper way to extend R?
Cheers,
Stefan.
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Also: yay! A huge thanks to you and the other admins for putting in all the
work to get this off the ground!
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Hi Harald,
I don’t see anywhere for mentors to sign up, but I will make myself available
again this year.
Cheers,
Stefan.
> On Feb 29, 2016, at 2:39 PM, Harald Schilly <harald.schi...@gmail.com> wrote:
>
> Hi, just a quick note to everyone: SageMath has yet again
I still don't see your problem. SageMath is open-source, and because of the
GPL always will be. Many open-source projects have a commercial side to
them (MySQL, RedHat, Mozilla, ...) For now, I think SageMath the company
and SageMath the open-source project have goals that are very well
You missed this discussion:
https://groups.google.com/d/msg/sage-devel/eWjHyd294ck/N02qfE_yAgAJ
Short answer: yes.
--Stefan
On Tuesday, February 16, 2016 at 10:11:36 AM UTC-6, Ralf Stephan wrote:
>
> Ah thanks, but still: will there be an application?
> According to Google: "T
On Monday, February 15, 2016 at 1:43:02 AM UTC-6, Ralf Stephan wrote:
>
> On Monday, February 15, 2016 at 1:11:18 AM UTC+1, William wrote:
>>
>> Combinatorics is definitely the strongest part of Sage.
>
>
> Old school combinatorics perhaps. But see
>
Discussion in the hallway with a colleague the other day (paraphrased):
Colleague: "So, is Sage working yet on the latest OS X?"
Me: "Mixed signals. People get errors, it seems to work if you enable root
again"
Colleague: "Oh no, I don't want to do that. I guess I'll wait and se."
Me: "You can
On Tuesday, October 27, 2015 at 11:38:13 PM UTC-5, Travis Scrimshaw wrote:
>
>
>
> On Tuesday, October 27, 2015 at 10:57:28 PM UTC-5, Stefan wrote:
>>
>> As a matroid theorist I care about creating millions and millions of
>> small graphs (10 vertices is already a
deleted. Oh, and I really dig multiple edges, loops, and edge labels.
I care about the same thing when it comes to sets, and Sage's Set data
structure just doesn't cut it. Graphs don't bother too much with the
category framework, right?
--Stefan
On Tuesday, October 27, 2015 at 10:40:21 AM UTC-5
Hi Siddharth,
I won't be able to mentor you. If I were to go about doing this thoroughly,
I would look at the kinds of tests carried out in the literature on graph
isomorphism (specifically here: http://arxiv.org/pdf/1301.1493v1.pdf ) and
redo these (or very similar) tests with the listed
, but the link was dead.
I'd appreciate any pointers!
Cheers,
Stefan.
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Yeah, that one doesn't have any timings. I guess someone should sit down
and run some tests. Not sure if it'll be me, I'm swamped with work :(
On Monday, October 5, 2015 at 2:44:06 PM UTC-5, David Joyner wrote:
>
> On Mon, Oct 5, 2015 at 2:14 PM, Stefan <stefan...@gmail.com >
>
When I click on the green link with the branch name in this ticket, it
makes it look like it deletes the contents of two files:
http://trac.sagemath.org/ticket/18946
When I git trac try 18946 and then do a diff against the previous commit,
everything is fine (i.e. the new code gets added,
I noticed that PolynomialQuotientRing_generic is not derived from
QuotientRing_generic but rather directly from CommutativeRing. Is there a
reason for that?
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In the discussion [1] it was noticed out that sage cannot reduce elements
in polynomial rings over arbitrary rings modulo non-principal ideals and
(more importantly) how to react to this. There was a general tendency for
raising an exception rather than returning bogus results. But in the
or QuotientRing_generic to inherit
from. Of course, as a Python class, it could inherit from both.
David
On Tue, Aug 11, 2015 at 4:28 AM, Stefan Witzel stwit...@gmail.com wrote:
I noticed that PolynomialQuotientRing_generic is not derived from
QuotientRing_generic but rather directly from CommutativeRing
I noticed [1] a problem in the constructor of PolynomialSequence. It seems
that in [2] finite coefficient fields of characteristic 2 are supposed to
be treated specially but really the test is only for characteristic 2.
I tried to fix [3] the issue by testing for finiteness but then realized
After finding problems sage-6-7.tar.gz
Now I succeeded with git clone
https://github.com/sagemath/git-trac-command.git
But in compiling on Cygwin64 I run into a problem with ecm-6.4.4
After leaving ~/sage-git/sage/local/var/tmp/sage/build/givaro-3.7.1/src
I got: The following package(s) may have
initially I tried to install via git as described here
http://trac.sagemath.org/wiki/Cygwin64Port but, because I have a very poor
internet connection behind some company firewalls I dit not suceed with git
clone git://trac.sagemath.org/sage.git. So I downloaded sage-6.7.tar.gz
In the past I had the same experience. I did it but in the last years, but
it was really difficult. But recently I tried an install of cygwin with the
setup-x86_64.exe --no-admin switch and it worked very well wihout any
problems. The recent problems with installation of sage are really my
How to do this ?
I found in ~/sage-6.7/src/module_list.py
Extension('sage.rings.polynomial.pbori',
sources = ['sage/rings/polynomial/pbori.pyx'],
libraries=['polybori-' + polybori_major_version,
'polybori_groebner-' + polybori_major_version,
the logfile
~/sage-6.7/logs/pkgs/python-2.7.8.log
at the very end after make[3]: Leaving directory
'/home/XX/sage-6.7/local/var/tmp/sage/build/python-2.7.8/src'
failed with:
Installing valgrind suppression file...
Testing importing of various modules...
ctypes module imported OK
math
I'm adding my thanks to Harald. To the students: good luck, and have fun!
On Tuesday, April 28, 2015 at 10:40:12 AM UTC-5, david@inria.fr wrote:
On Tuesday, April 28, 2015 at 6:43:32 AM UTC+2, Vincent Knight wrote:
Thanks for the hard work Harald and welcome to all the students!
+1
+1 to SageMath.
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On Wednesday, January 28, 2015 at 4:45:54 PM UTC-6, Simon King wrote:
Hi Stefan,
On 2015-01-28, Stefan stefan...@gmail.com javascript: wrote:
The question, now, is why the coercion system is invoked at all: I'm
doing
arithmetic within my own ring. The culprit, I guess
This is now trac 17692
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No. The coercion system has a cache of its own. It does keep strong
references to the coercion maps. They don't have homsets, though. The
problem might be that you keep extracting coercion maps from the coercion
system:
if all(R.has_coerce_map_from(S) for R in self._rings):
last)
...
AttributeError: 'EtaGroupElement' object has no attribute 'is_one'
Cheers,
Stefan.
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caused this? And help
me think about a way to fix it?
Cheers,
Stefan
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Single-threaded build after make distclean was successful. Currently
trying
export MAKE=make -j4
make distclean
make
Will report back tomorrow.
--Stefan.
On Tuesday, December 2, 2014 5:00:06 PM UTC+13, Stefan wrote:
On Tuesday, December 2, 2014 2:22:28 PM UTC+13, François wrote
Success again. I don't know what was different the first time. Sorry for
the noise.
--Stefan
On Tuesday, December 2, 2014 10:35:15 PM UTC+13, Stefan wrote:
Single-threaded build after make distclean was successful. Currently
trying
export MAKE=make -j4
make distclean
make
Will report
I'm trying to build 6.5.beta1 on my Mac with OSX 10.7.5. I manually applied
#17397, but my compilation breaks on matplotlib. Here's the log:
Found local metadata for matplotlib-1.3.1
Found local sources at /Users/stefan/sage/upstream/matplotlib-1.3.1.tar.gz
Checksum
On Tuesday, December 2, 2014 2:22:28 PM UTC+13, François wrote:
It looks like pkg-config has not been installed or the dependencies for
matplotlib aren't there yet. freetype and png should be discovered through
pkg-config and they aren't in your case. Did you make distclean before
Problems arise when thinking about more complicated mathematical objects. I
don't know if I simply lack the appropriate Mathematica knowledge, but
years ago, when I implemented matroids in Mathematica, a matroid was simply
a list with 6 elements (groundset, representation matrix, and I forget
Does a compiled Sage still run?
--Stefan
On Friday, October 17, 2014 2:53:29 PM UTC-5, Volker Braun wrote:
I tried gcc 4.8.3 with the OSX 10.10 patch but that dies with Bootstrap
comparison failure!
More info: http://trac.sagemath.org/ticket/17169
On Friday, October 17, 2014 6:14:07 PM
.
--Stefan.
On Tuesday, September 23, 2014 1:37:13 AM UTC-5, Clemens Heuberger wrote:
Hi Simon,
Am 2014-09-20 um 18:47 schrieb Simon King:
On 2014-09-20, Clemens Heuberger clemens@aau.at javascript:
wrote:
Shall I enforce that the parent of all labels is the same (and warn
on?
--Stefan.
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Visit
Maybe I was being premature... today, both Sage and regular R seem to
configure. I haven't tried the actual Sage install yet.
I did build libpaper (in ~/local/lib), but I don't believe I did anything
to tell the configure scripts it's there.
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precisely what's going on here. Anyway, ~/local/lib
(which has libpaper) is now in my LD_LIBRARY_PATH, and I'm starting a new
Sage build.
--Stefan.
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) yes
checking whether gfortran accepts -g... (cached) yes
checking if libtool supports shared libraries... yes
Note no autodetect line at all. What's going on? What's different when the
Sage installation runs configure?
--Stefan.
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Is this behaviour intentional or is this a bug?
Neither, in Sage the Python promise is necessarily broken, because math
objects and equality is just too complex.
But it's unfortunate, and unnecessary, when this happens for elements of
the same ring. See this thread where a possible
Hi all,
I'm hijacking this thread for my own compile-on-a-supercomputer issue. This
system (LSU's Mike II) apparently doesn't have separate compile nodes, and
I was told to run an interactive session on a compute node to do my
compilation.
I think I set all standard software to use GCC
Thanks! This was in /scratch, but on this system it's just an alias for
/work, and still on the cluster filesystem. I believe there's local storage
once you get assigned a node, I'll give that a try, and report back.
--Stefan.
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We're making progress! The build now fails on R, with the line:
checking for visible __lib_stack_end... yes
checking for lpr... lpr
checking for paperconf... false
Error configuring R.
On Wednesday, September 17, 2014 3:02:04 PM UTC-5, Stefan wrote:
Thanks! This was in /scratch
Can you post the config.log for R?
Certainly!
Incidentally, the support guy was concerned about the --prefix option
passed to the configure script (see line 18 of the log below). Is that
something to worry about?
--Stefan.
Found local metadata for r-3.1.1.p0
Found local sources
Ok. It's a bit long, so I pasted it here:
http://pastebin.com/9a4KCGX9
--Stefan
On Wednesday, September 17, 2014 6:44:01 PM UTC-5, François wrote:
On Wed, 17 Sep 2014 16:31:40 Stefan wrote:
Incidentally, the support guy was concerned about the --prefix option
passed to the configure
On Mon, Jul 21, 2014 at 11:50 AM, Nils Bruin nbr...@sfu.ca wrote:
On Friday, July 18, 2014 4:01:10 PM UTC-7, Stefan Karpinski wrote:
If Julia has shown anything, it's that you *can* have ubiquitous multiple
dispatch in a dynamic language and have it be very fast – it is commonly a
zero-cost
On Mon, Jul 21, 2014 at 2:12 PM, Nils Bruin nbr...@sfu.ca wrote:
It certainly seems unlikely we'd be able to utilize these ideas without
significantly altering python/cython. I guess Sulia or Juxiom might be
the next generation computer algebra system.
Glad the explanation was helpful, even
to
actually do the dispatch at runtime, in which case you need to resort to
double dispatch or something like that in C++.
On Sun, Jul 20, 2014 at 5:09 PM, Francesco Biscani bluesca...@gmail.com
wrote:
Hello Stefan,
thanks for the explanations, this all looks really interesting to me.
On 19 July
,pure_instructions
Filename: /Users/stefan/.julia/SIUnits/src/SIUnits.jl
Source line: 139
push RBP
mov RBP, RSP
Source line: 139
vcvtsi2sd XMM1, XMM0, RDI
vaddsd XMM0, XMM1, XMM0
Source line: 140
pop RBP
ret
With no further definitions you also get much more complex behavior, like,
for example
On Sat, Jul 19, 2014 at 8:22 AM, Nils Bruin nbr...@sfu.ca wrote:
Consider A+B where A is a polynomial in ZZ[x,y] and B is a power series in
F_q[[x]] (finite field with q elements).
Do you expect your CAS to make sense of that addition? Sage does. It
returns an answer in F_q[[x]][y] (i.e., a
That's the road we took with Sage's matroids
(see http://matroidunion.org/?p=517 ). But that's a very different beast
from numbers. I wouldn't want to write
x.equals(y)
every time instead of x == y. And it still doesn't solve the problem of
x in S
for a set S.
--Stefan.
On Tuesday, June
Yes, it works now. There seem to be other issues with my SSH setup, but I
can do some things, including checking out tickets! Thanks!
--Stefan.
On Wednesday, June 4, 2014 3:00:53 PM UTC-4, Volker Braun wrote:
I've added a workaround for the Python 2.7.1 issue, this should work now.
Just do
(anonymous)
http://trac.sagemath.org/login/xmlrpc (authenticated)
realm sage.math.washington.edu
Username: Stefan
Password: ***
Retrieving SSH keys...
Traceback (most recent call last):
File /usr/local/bin/git-trac, line 18, in module
cmdline.launch()
File /Users/stefan/sage/git-trac
Yeah, that doesn't work either:
Traceback (most recent call last):
File /Users/stefan/sage/local/lib/python/site.py, line 548, in module
main()
File /Users/stefan/sage/local/lib/python/site.py, line 530, in main
known_paths = addusersitepackages(known_paths)
File /Users/stefan/sage
I'd be happy to mentor a project regarding sage.matroids. Last year's
participant on my project canceled at the last minute, so I hope to have
better luck this year! I'll update the project description as soon as the
document goes up.
--Stefan.
On Thursday, January 30, 2014 4:18:42 AM UTC-5
How often is the pickle jar updated? My impression was that it would be
with each new release. But I just unzipped it, and I don't see any matroids
in there, while sage.matroids has been part of Sage since 5.12.
--Stefan.
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On a git ticket, click on the name of the branch (which should be green if
it applies cleanly) and you'll get a diff of the changes that would occur
if the ticket were merged into the current development branch. This view
won't be affected by the kind of rebases that you mention.
Ok,
the right questions?
--Stefan.
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. the git the hard
way section) to reflect the fact that we have the develop branch in
addition to the master branch? I'm not quite sure how to synchronize that
with the server.
--Stefan.
On Saturday, January 4, 2014 2:13:43 PM UTC+1, Nathann Cohen wrote:
Helloo !!
I did, briefly. I
. the git the hard
way section) to reflect the fact that we have the develop branch in
addition to the master branch? I'm not quite sure how to synchronize that
with the server.
--Stefan.
On Saturday, January 4, 2014 2:13:43 PM UTC+1, Nathann Cohen wrote:
Helloo !!
I did, briefly. I
individual codes and designs litter the
namespace. Groups, rings and fields are a muddier issue, because they're so
widely used.
--Stefan.
On Friday, November 22, 2013 9:53:33 AM UTC-5, P Purkayastha wrote:
On 11/22/2013 09:34 PM, John Cremona wrote:
On 22 November 2013 13:31, Nathann Cohen nathan
Just wondering... has Apple's compiler by any chance improved enough so we
can stop building our own GCC?
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On Wednesday, October 2, 2013 2:46:45 AM UTC-4, Thomas Feulner wrote:
The last post to this thread is 2 years old, but I have continued my work
on canonical forms for linear codes.
I have followed up Dima`s proposal and prepared a package, which is
entirely written in Python/Cython, since
The main thing that's bugging me, actually, is the discrepancy between
notebook and command line.
On the command line:
%runfile /path/to/myfile.sage
In the notebook:
load /path/to/myfile.sage
Note the absence of the %. And neither of these options will work in the
other environment.
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On Thursday, August 29, 2013 12:54:02 PM UTC-4, Nils Bruin wrote:
On Thursday, August 29, 2013 8:52:02 AM UTC-7, Simon King wrote:
Hi Stefan,
On 2013-08-29, Stefan stefan...@gmail.com wrote:
Actually, this is not quite true. reduce() is, by default, called
automatically for elements
, this does not hold in my example (with the polynomial ring
defined above):
sage: cmp((c+1)^2, c^2 + 2*c+1)
0
Again, my main issue is that the elements are *from the same ring*.
Cheers,
Stefan.
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, but my
imagination is kind of limited. Subclassing FractionField feels like overkill,
but a long list of try... Except clauses inside __hash__ is bad too.
Thoughts?
--Stefan
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I think backward compatibility is a strong argument to keep returning True.
I also have an answer based on my favorite definition is ..., namely the
analogue with matroid connectivity, where any matroid that is too small to
have a k-separation, is automatically k-connected. Extending this to
Congratulations! Your work as release manager is incredible!
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To post to
of no trailing whitespace, there's none.
--Stefan.
On Friday, June 21, 2013 3:41:13 AM UTC+2, leif wrote:
leif wrote:
Keshav Kini wrote:
Stefan stefan...@gmail.com javascript: writes:
I'd ask for p[6:], that's the expected use and consistent with the
previous line which tests
graphs.algorithms.conversions.to_partition(G)
Cheers,
Stefan.
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To post
I believe that this style of continuation breaks the live documentation.
I couldn't easily find any non-underscore methods (which of course don't
show up in the reference manual) but while working on #13381 I discovered
this. So it would be very, very good to fix this before requiring
The fix should be adding two lines after line 374 of
https://github.com/sagemath/sagenb/blob/master/sagenb/notebook/docHTMLProcessor.py
I don't have time to get acquainted with Notebook development right now, or I'd
fix it myself...
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Don't strip, line continuations are often indented.
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I'd ask for p[6:], that's the expected use and consistent with the previous
line which tests for '... ' (note the space).
--Stefan.
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Did you open a ticket to make it an optional package available from the
usual spkg repositories?
[It should perhaps at least be available / listed in the experimental
category.]
Or maybe (haven't looked at it yet) it violates the conventions for
spkgs (in that it modifies the Sage
', '', 'single')
File , line 1, in File
/Users/stefan/sage-5.10.beta5/devel/sagenb/sagenb/misc/support.py, line
271, in docstring s += '**Definition:** %s'%sageinspect.sage_getdef(obj,
obj_name) File
/Users/stefan/sage-5.10.beta5/local/lib/python2.7/site-packages/sage/misc/sageinspect.py
This is now Trac 14768. I uploaded a patch that seems to fix it.
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('sage.matroids.constructor', 'Matroid')
lazy_import('sage.matroids', 'matroids_catalog', 'matroids')
When we build the documentation, some files build successfully, others
don't. The ones that fail, generate errors like the following:
[reference]
/Users/stefan/sage-5.10.beta4/devel/sage/doc/en/reference/matroids/sage
).
--Stefan.
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works for arbitrary rings
(including non-commutative ones). The BinaryMatroid, TernaryMatroid,
QuaternaryMatroid classes have optimized versions already.
--Stefan.
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loss.
And as Travis said, issues with the documentation etc. can be fixed over
time. We intend to use, improve, and expand this code for a long, long time.
--Stefan.
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I'd have to check carefully. There's likely to be some performance loss
even when all obvious bottlenecks are accounted for, because for our
special classes BinaryMatrix, TernaryMatrix, QuaternaryMatrix we use inline
get() and set() methods that bypass the Sage finite field elements. We
On Saturday, May 25, 2013 11:22:38 AM UTC-4, Volker Braun wrote:
On Saturday, May 25, 2013 3:51:06 PM UTC+1, Stefan wrote:
There's likely to be some performance loss even when all obvious
bottlenecks are accounted for, because for our special classes
BinaryMatrix, TernaryMatrix
propose to keep the
LeanMatrix code for now, opening a ticket titled something like Bring Sage
matrices into the matroid code without performance loss for a later date.
--Stefan.
P.S. It looks like GF(4)-matrices had a speed regression between 5.9 and 5.10?!
On 25 mei 2013, at 12:58, Volker
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