[sage-devel] Re: Sage grant

[Andrew]

Hi Anne,

I agree with Dima in that it would be great to have some of the basic ring 
theory available in improved. There are some basic deficiencies with 
(Laurent) polynomial rings, especially in more than one variable and it 
would great if all of the problems with quite basic rings could be ironed 
out. In addition, my life would be much easier if sage were able to 
efficiently compute in the location of a ring at a ideal -- what I would 
really like is to be able to calculate in modular systems "with 
parameters", which is my way of saying that I would like to be able to 
explicit calculations in modular systems for Iwahori-Hecke algebras. 
Implementing all of these gadgets is, perhaps, not so exciting from the 
point of view of a grant application, but not having these basic ring 
constructions available limits what you can currently do with sage. So far 
I have always found way to get around these problems, but it has been much 
harder than I expected.

Regarding you suggested wish-list, I have already implemented graded Specht 
modules for  KLR algebras for quivers of type A and when I have time I can 
get the finite dimensional standards as well. My work on this has stalled, 
but I am hoping to be able to restart soon, so perhaps we should talk more 
about this aspect of what you are planning.

Andrew

On Wednesday, 29 October 2014 10:42:53 UTC+11, Anne Schilling wrote:
>
> Dear All! 
>
> Dan Bump, Ben Salisbury, Mark Shimozono and I are planning to apply 
> for an NSF grant for Sage (to fund Sage Days and other Sage related 
> activities). We will mostly focus on topics in combinatorics/algebra/ 
> representation theory. It would be great to hear from you what your 
> wishlists are in this area. What are features you would like to implement/ 
> see implemented? 
>
> Particular areas we would like to emphasis are representation theory of 
> semigroups, representations of affine Lie algebras and hyperbolic 
> Kac-Moody 
> Lie algebras, KLR algebras, the power of the category code and 
> functorial constructions to implement the DAHA and more. But we are 
> open to other suggestions. 
>
> Best, 
>
> Anne 
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Volker Braun]

I can't even test tickets on OSX without the gcc update, because our only 
buildbot is running on 10.10.

IMHO the only thing that CAN wait is beautification of the scripts or 
repacking the gcc tarball to save some disk space...



On Wednesday, October 29, 2014 9:26:28 PM UTC, Dima Pasechnik wrote:
>
> On 2014-10-29, Volker Braun > wrote: 
> > --=_Part_5637_1547295187.1414591060718 
> > Content-Type: text/plain; charset=UTF-8 
> > 
> > On Wednesday, October 29, 2014 12:45:15 PM UTC, kcrisman wrote: 
> >> 
> >> See also http://wiki.sagemath.org/SupportedPlatforms which I minimally 
> >> updated with respect to this just now, but which probably needs some 
> more 
> >> significant updating as I think we may not have all the Roman-named 
> >> machines anymore. 
> >> 
> > 
> > If you want me to take off OSX from the list of supported platforms then 
> we 
> > can do that of course. I don't really mind but I suppose others do ;-) 
>
> Probably OSX 10.10 can wait for the next (sub)release... 
> > 
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Dmitrii Pasechnik]

On 2014-10-29, Volker Braun  wrote:
> --=_Part_5637_1547295187.1414591060718
> Content-Type: text/plain; charset=UTF-8
>
> On Wednesday, October 29, 2014 12:45:15 PM UTC, kcrisman wrote:
>>
>> See also http://wiki.sagemath.org/SupportedPlatforms which I minimally 
>> updated with respect to this just now, but which probably needs some more 
>> significant updating as I think we may not have all the Roman-named 
>> machines anymore.
>>
>
> If you want me to take off OSX from the list of supported platforms then we 
> can do that of course. I don't really mind but I suppose others do ;-) 

Probably OSX 10.10 can wait for the next (sub)release...
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Photomath

[Benjamin Frazier]

Hey...that would be great to add this to Sage...Personally, I think a lot 
better combination would be Sage + cymath.com . 
 Have you used this site?  The site does a fantastic job of explaining how 
to solve problems step by step. 

On Thursday, October 23, 2014 12:00:52 PM UTC-4, Iftikhar Burhanuddin wrote:
>
> Hi folks,
>
> Photomath is a camera app that can solve math equations. Watching the 
> video on this page
>
>
> http://techcrunch.com/2014/10/23/disrupt-london-finalist-photomath-rockets-to-the-top-of-the-app-store
>
> made me wonder about the kind of problems/equations (Sage+Photo)math might 
> be able to solve. Your thoughts are welcome.
>
> Regards,
> Ifti
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] Re: Poset/lattice, join and join_matrix

[Samuel Lelievre]

By coincidence I just found that the function GCD_list
in sage.rings.integer was coded to return one for an
empty list.

Fix (needs review!) at

http://trac.sagemath.org/ticket/17257

Samuel

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] Re: The Misfortunes of a Trio of Mathematicians Using Computer Algebra Systems

[parisse]

The p-adic algorithm is indeed very well known (and implemented in giac). 
But my point is that Bareiss is faster here (the matrix has huge 
coefficients but is small), even if you don't care to prove that the 
determinant is correct once you have (probably) found the last invariant 
factor and polished the determinant modulo a few primes.


> I wrote that det code in Sage (though in Sage-6.4 it'll likely be 
> replaced by a call to FLINT...). It computes det(A) in a very 
> interesting way, which is asymptotically massively faster than 
> Mathematica. To compute det(A), choose a random vector v and solve Ax 
> = v using a p-adic lifting algorithm (the one 
> inhttps://cs.uwaterloo.ca/~astorjoh/iml.html). One can prove --using 
> Cramer's rule--that the lcm of the denominators of the entries of x 
> will then be a divisor d of det(A), and with high probability one 
> expects that det(A)/d is a tiny integer. One can then provably (using 
> the Hadamard bound) find det(A) by working modulo a few additional 
> primes and using the Chinese Remainder theorem. 
>
>  -- William 
>
> -- 
> William Stein 
> Professor of Mathematics 
> University of Washington 
> http://wstein.org 
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] "Can We Trust Computer Algebra Systems?"

[William Stein]

On Wed, Oct 29, 2014 at 7:54 AM, Jakob Kroeker  wrote:
>> With which money?
>
>
> Funding money. If that is not allowed formally, convince funders.
> In fact, in particular cases active testing was already done by some Sage
> developers,
> which (I do not know this) probably were not explicitly paid for that task.
> There is money for travel, why not for QA? QA is inherently natural for
> software development.
> For example, we could find out, how reliable some routines are (otherwise,
> how to know?),
> or how effective are the used development process policies:
>
> The error rate (crash or incorrect result) for primary decomposition in
> recent Singular version
> should be down to about 1 per 200.000 examples (I' stressing these routines
> at the moment)
> The error rate for algebraic geometry related computations in polynomial
> rings over integers (e.g. groebner, intersect, syzygies...)
> should be much worse. Go figure! Or look at the bug reports in the
> bugtrackers (Singular,sage).
> In fact, std() over integers in Singular is broken for years.
> A serious question: did someone who uses them not notice? And if not, why?

Many people doing algebraic geometry research use Magma or Macaulay2.
 Sage/Singular has failed to take over in Algebraic Geometry, like
Sage has in other areas, such as combinatorics and big parts of number
theory.   QC issues with Singular are a part of the reason.  In
comparison, in number theory we are able to build on high quality
libraries like FLINT.

> I suggest to think about offering bounties for new reported bugs
> and spend 10  to 30 percent of funding money for QA related tasks -
> there is a rule of thumb that for three developers one tester is needed.
> To some noticeable extent QA happens during the ticket review process, but I
> doubt
> that reviewers stress the routines with random input and compare the results
> of different implementations.

Sometimes they don't and sometimes they definitely do.  I often do,
and it is usually results in problems being found.  Stress testing and
comparison of answers when refereeing patches is  good practice, and
is made very easy in sage due to how easy it is to call other systems.

>
>
> Jakob
>
>
> Am Mittwoch, 29. Oktober 2014 11:28:01 UTC+1 schrieb Jeroen Demeyer:
>>
>> On 2014-10-24 18:09, Jakob Kroeker wrote:
>> > I suggest Sage to pay QA staff for actively hunting bugs.
>> With which money?
>>
> --
> You received this message because you are subscribed to the Google Groups
> "sage-devel" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sage-devel+unsubscr...@googlegroups.com.
> To post to this group, send email to sage-devel@googlegroups.com.
> Visit this group at http://groups.google.com/group/sage-devel.
> For more options, visit https://groups.google.com/d/optout.



-- 
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] "Can We Trust Computer Algebra Systems?"

[Jakob Kroeker]

>
> With which money? 
>

Funding money. If that is not allowed formally, convince funders. 
In fact, in particular cases active testing was already done by some Sage 
developers,
which (I do not know this) probably were not explicitly paid for that task. 
There is money for travel, why not for QA? QA is inherently natural for 
software development.
For example, we could find out, how reliable some routines are (otherwise, 
how to know?),
or how effective are the used development process policies:

The error rate (crash or incorrect result) for primary decomposition in 
recent Singular version
should be down to about 1 per 200.000 examples (I' stressing these routines 
at the moment)
The error rate for algebraic geometry related computations in polynomial 
rings over integers (e.g. groebner, intersect, syzygies...)
should be much worse. Go figure! Or look at the bug reports in the 
bugtrackers (Singular,sage).
In fact, std() over integers in Singular is broken for years.
A serious question: did someone who uses them not notice? And if not, why?


I suggest to think about offering bounties for new reported bugs 
and spend 10  to 30 percent of funding money for QA related tasks -
there is a rule of thumb that for three developers one tester is needed.
To some noticeable extent QA happens during the ticket review process, but 
I doubt
that reviewers stress the routines with random input and compare the 
results of different implementations.


Jakob


Am Mittwoch, 29. Oktober 2014 11:28:01 UTC+1 schrieb Jeroen Demeyer:
>
> On 2014-10-24 18:09, Jakob Kroeker wrote: 
> > I suggest Sage to pay QA staff for actively hunting bugs. 
> With which money? 
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Please review ipython notebook

[Matthias Bussonnier]

Ok, so probably a little late (seem to be closed), and I'm supper not used 
to track, so I'll comment here.
Looking at code 
in 
http://git.sagemath.org/sage.git/commit/?id=2fc399e25960514a3164080f800d867696480c49

TEMPLATE_PATH could technically be a list of path, as IPython uses Jinja 
filesystem loader 
(http://jinja.pocoo.org/docs/dev/api/#jinja2.FileSystemLoader) 

Thus you should be able to set it to "just" do : 
[os.path.join(SAGE_EXTCODE, 'notebook-ipython', 'templates'), 
path_to_ipython_template], 

The trick is, to set it to also use "path_to_ipython_template_parent_dir" :

[ sge_template , ipython_parent_template , ipython_template ] which I'll 
shorten as [A,B,C]

Then the file  of (C) you want to overwrite, you create a file 
with the same name in (A), that extends , that jinja 
find through (B).
The file you don't overwrite, jinja find in C.

Note that the "template" in  is because (B/templates == 
C). 

Does it make sens ? (though you might still need to ship a huge 
notebook.html) but we can fix that on IPython so that you can "just" 
overwrite the links.

-- 
M



-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] Re: The Misfortunes of a Trio of Mathematicians Using Computer Algebra Systems

[William Stein]

On Wed, Oct 29, 2014 at 7:14 AM, Harald Schilly
 wrote:
>
>
> On Wednesday, October 29, 2014 1:25:08 PM UTC+1, parisse wrote:
>>
>> Just curious: what is the algorithm used by sage here?
>> I have tried Bareiss, modular and p-adic with giac, and Bareiss seems the
>> fastest: 0.02s on my Mac, vs about 1s for (proven) modular/p-adic.
>> sage 6.3 returns the answer in 0.12s on my computer, while Maxima takes
>> 15s.
>
>
> Sage uses different algorithms based on difficulty.
> http://git.sagemath.org/sage.git/tree/src/sage/matrix/matrix_integer_dense.pyx#n3252
>
> I'm guessing in this case it's this branch:
> http://git.sagemath.org/sage.git/tree/src/sage/matrix/matrix_integer_dense_hnf.py#n184
>

I wrote that det code in Sage (though in Sage-6.4 it'll likely be
replaced by a call to FLINT...). It computes det(A) in a very
interesting way, which is asymptotically massively faster than
Mathematica. To compute det(A), choose a random vector v and solve Ax
= v using a p-adic lifting algorithm (the one
inhttps://cs.uwaterloo.ca/~astorjoh/iml.html). One can prove --using
Cramer's rule--that the lcm of the denominators of the entries of x
will then be a divisor d of det(A), and with high probability one
expects that det(A)/d is a tiny integer. One can then provably (using
the Hadamard bound) find det(A) by working modulo a few additional
primes and using the Chinese Remainder theorem.

 -- William

-- 
William Stein
Professor of Mathematics
University of Washington
http://wstein.org

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: The Misfortunes of a Trio of Mathematicians Using Computer Algebra Systems

[Harald Schilly]

On Wednesday, October 29, 2014 1:25:08 PM UTC+1, parisse wrote:
>
> Just curious: what is the algorithm used by sage here? 
> I have tried Bareiss, modular and p-adic with giac, and Bareiss seems the 
> fastest: 0.02s on my Mac, vs about 1s for (proven) modular/p-adic. 
> sage 6.3 returns the answer in 0.12s on my computer, while Maxima takes 
> 15s.
>

Sage uses different algorithms based on difficulty.
http://git.sagemath.org/sage.git/tree/src/sage/matrix/matrix_integer_dense.pyx#n3252

I'm guessing in this case it's this branch:
http://git.sagemath.org/sage.git/tree/src/sage/matrix/matrix_integer_dense_hnf.py#n184

-- harald
 

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Volker Braun]

Gcc picks up parts of your homebrew install, you must at least rename 
/usr/local before you can build anything with homebrew installed there.

On Wednesday, October 29, 2014 11:57:19 AM UTC, Samuel Lelievre wrote:
>
> Under OS X 10.10 Yosemite, with then without homebrew's gcc 4.9.1,
> I tried and failed to build Sage.
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Volker Braun]

On Wednesday, October 29, 2014 12:45:15 PM UTC, kcrisman wrote:
>
> See also http://wiki.sagemath.org/SupportedPlatforms which I minimally 
> updated with respect to this just now, but which probably needs some more 
> significant updating as I think we may not have all the Roman-named 
> machines anymore.
>

If you want me to take off OSX from the list of supported platforms then we 
can do that of course. I don't really mind but I suppose others do ;-) 

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[kcrisman]

Maybe the next beta should not be blocked by this?  It's only final 
releases that have blockers, I guess... unless you mean it's because it 
doesn't work on your laptop, but I assume (perhaps incorrectly) that 
sage.math is still the "official" release machine.

See also http://wiki.sagemath.org/SupportedPlatforms which I minimally 
updated with respect to this just now, but which probably needs some more 
significant updating as I think we may not have all the Roman-named 
machines anymore.

- kcrisman

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: The Misfortunes of a Trio of Mathematicians Using Computer Algebra Systems

[parisse]

Just curious: what is the algorithm used by sage here? 
I have tried Bareiss, modular and p-adic with giac, and Bareiss seems the 
fastest: 0.02s on my Mac, vs about 1s for (proven) modular/p-adic. 
sage 6.3 returns the answer in 0.12s on my computer, while Maxima takes 15s.

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: determinant calculation, was: The Misfortunes of a Trio of Mathematicians [...]

[Jason Grout]

On 10/28/14, 15:53, Robert Dodier wrote:

On 2014-10-25, Jason Grout  wrote:


   http://www.ams.org/notices/201410/rnoti-p1249.pdf



P.S. It would be interesting to see if Sage can do the calculation they
identified as buggy in mathematica.  That would make for a cool
follow-up editorial.


I've reimplemnted the buggy determinant calculation in Maxima.
Presumably from this it would be easy to redo it in any other system;
I don't know how Sage manages such calculations.

I am happy to report that Maxima, despite its many and varied bugs,
doesn't have this particular one:

 bfloat (determinant (big_matrix));
  => 1.951242191319868b9762

Reported value in paper is 1.95124219131987 * 10^9762.

Script is attached as a PS. The function foo(n) can be used to generate
random examples, as the authors did to find one which tickles the bug.



Thanks so much for typing up those long matrices.  It looks like Sage 
also gets the right answer for that particular example:


https://cloud.sagemath.com/#projects/49a2531d-9d02-42c9-9db6-f9551fbfa59e/files/2014-10-24-212837.sagews

Thanks,

Jason

--
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Samuel Lelievre]

Sorry, the last 6 lines in my last post are there twice,
please ignore the repetition.

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Samuel Lelievre]

Hi,

Under OS X 10.10 Yosemite, with then without homebrew's gcc 4.9.1,
I tried and failed to build Sage.



1. With homebrew's gcc 4.9.1 installed.

Starting from Sage 6.4.beta6 I merged
#17176  u/vbraun/gdb_on_yosemite
#17169  u/vbraun/upgrade_to_gcc_4_9_1
#17204  u/vbraun/osx_yosemite_libtool_version_detection

The compilation ends with some errors, including the
following lines towards the end:

--
>>> Trying to download 
http://www.sagemath.org/packages/upstream/setuptools/setuptools-3.6.tar.gz
Traceback (most recent call last):
  File "", line 12, in 
  File "/Users/s/builds/sage/local/lib/python/urllib.py", line 1399, in 

from _scproxy import _get_proxy_settings, _get_proxies
ImportError: No module named _scproxy
--

This seems to indicate that building Python succeeded, but urllib
is not working because of a missing _scproxy. Indeed, when I run
Sage's python:

--
$ ./sage -python
Python 2.7.8 (default, Oct 28 2014, 22:07:12)
[GCC 4.9.1] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import urllib
Traceback (most recent call last):
  File "", line 1, in 
  File "/Users/s/builds/sage/local/lib/python/urllib.py", line 1399, in 

from _scproxy import _get_proxy_settings, _get_proxies
ImportError: No module named _scproxy
--

2. I uninstalled homebrew's gcc, ran 'make distclean', then 'make' again.

This failed to build gcc, the relevant logs are here:

http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_install.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_pkgs_config.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_pkgs_gcc-4.9.1.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_gcc491_config.log.tgz





I then uninstalled homebrew's gcc, ran 'make distclean', then 'make' again.

This failed to build gcc, the relevant logs are here:

http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_install.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_pkgs_config.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_pkgs_gcc-4.9.1.log.tgz
http://carva.org/samuel.lelievre/t/20141029_osx1010_sage64b6_gcc491_config.log.tgz

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] Software is fundamental to research - show your support!

[John Cremona]

By coincidence I recceived your email a few minutes after reading
this:  
https://www.researchprofessional.com/0/rr/news/uk/views-of-the-uk/2014/10/Speak-up-for-software.html
 which people may also find interesting.

John

On 29 October 2014 10:31, Alexander Konovalov
 wrote:
> Dear all,
>
>
> I hope you may be interested in the following information:
>
> The Software Sustainability Institute ( http://www.software.ac.uk/ ), of
> which I am a Fellow, had recently initiated the petition to show that
> software is fundamental to research: research software should be treated as
> part of the research infrastructure, and if the fundamental role that
> software plays in research would be overlooked, then an ability to conduct
> research will be jeopardised.
>
> I suggest you to have a look, and if you agree, then please consider signing
> it too:
>
> http://bit.ly/SoftwareIsFundamental
>
> Please also help to spread the word about the petition by forwarding this
> email to anyone who may be interested. If you use Twitter, then you may also
> retweet this tweet:
>
> https://twitter.com/SoftwareSaved/status/522325490754154497
>
>
> Thank you,
>
> Alexander
>
> --
> You received this message because you are subscribed to the Google Groups
> "sage-devel" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to sage-devel+unsubscr...@googlegroups.com.
> To post to this group, send email to sage-devel@googlegroups.com.
> Visit this group at http://groups.google.com/group/sage-devel.
> For more options, visit https://groups.google.com/d/optout.

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Software is fundamental to research - show your support!

[Alexander Konovalov]

 

Dear all,


I hope you may be interested in the following information:

The Software Sustainability Institute ( http://www.software.ac.uk/ ), of 
which I am a Fellow, had recently initiated the petition to show that 
software is fundamental to research: research software should be treated as 
part of the research infrastructure, and if the fundamental role that 
software plays in research would be overlooked, then an ability to conduct 
research will be jeopardised.

I suggest you to have a look, and if you agree, then please consider signing 
it too:

 http://bit.ly/SoftwareIsFundamental

Please also help to spread the word about the petition by forwarding this 
email to anyone who may be interested. If you use Twitter, then you may 
also retweet this tweet: 

https://twitter.com/SoftwareSaved/status/522325490754154497


Thank you,

Alexander

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] "Can We Trust Computer Algebra Systems?"

[Jeroen Demeyer]

On 2014-10-24 18:09, Jakob Kroeker wrote:

I suggest Sage to pay QA staff for actively hunting bugs.

With which money?

--
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: "Can We Trust Computer Algebra Systems?"

[Emmanuel Charpentier]

I herebey nominate this "flame" for the Quote of the Year Award.

More seriously : rjf is probably right in stating that a mathematical error 
is more likely to be detected by mathematicians rather than 
"results-oriented" people : in most *practical* cases, an approximation 
will not be practically distinguishable from the exact results, but still 
lead to possible catastrophe. Furthermore, most "results-oriented" people 
will happily sacrifice correctness on the altar of practicality.

And when practicality includes social or political feasibility, the 
sacricice has dire onsequences (yes, economists, I'm looking at you : Forty 
years of "unexpected consequences" and still no incentive to revise your 
postulates...

--
Emmanuel Charpentier

Le dimanche 26 octobre 2014 16:46:54 UTC+1, rjf a écrit :
>
> This article is also discussed in another thread .. Trio .
> .
> Depending on what you are doing with the results of any computation, it
> may be prudent to verify the results. I don't know that CAS are especially
> more prone to bugs, but it may be that CAS are more likely to come up
> with results that can be disproved, thereby revealing a bug.  Or what
> is sometimes referred to as a "feature".
>
> For example, if a weather-prediction program had a bug in it that caused
> it to predict incorrectly 5% of the time, it might take a while to even
> notice.
>
> 
> Fortunately, the result of many computations with CAS are of
> no consequence whatsoever.
> 
>
>
>
> On Thursday, October 23, 2014 6:23:42 PM UTC-7, kcrisman wrote:
>>
>> Feature article in the Notices:
>> http://www.ams.org/notices/201410/rnoti-p1249.pdf
>> The point, as the authors say, is not about any one system; as we know, 
>> any nontrivial software (including good ol' Sage) has plenty of bugs. 
>>  Happy reading!
>> - kcrisman
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] SPKG Maintainers??

[Jean-Pierre Flori]

I agree let's get rid of this.

I've updated a bunch of packages but did not feel like filling this field 
with my name as I couldn't promise I'll keep on maintaining the packages.

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] SPKG Maintainers??

[Clemens Heuberger]

On 2014-10-29 09:32, Francois Bissey wrote:
> +1
>> On 29/10/2014, at 21:24, Jeroen Demeyer  wrote:
>>
>> Hello,
>>
>> all SPKG.txt files list "SPKG Maintainers". I never quite understood the 
>> reason for this. Mostly, this seems to have been added once when creating 
>> the SPKG and indeed many "maintainers" have long left Sage. Since these 
>> sections doesn't seem to have a purpose, can we just remove those?

+1

I was wondering why SKPG's have maintainers and other modules do not.

One example would be #16747 (Arb - arbitrary precision floating point ball
arithmetic), where the "SPKG Maintainers" proposed inclusion in July and we have
not heard anything from them since that time.

Regards, CH

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: Sage on OSX 10.10

[Volker Braun]

This is still blocking the next beta release..

http://trac.sagemath.org/query?keywords=~yosemite&order=priority


On Friday, October 24, 2014 2:39:45 PM UTC+1, Volker Braun wrote:
>
> I have a working Sage on OSX 10.10. I suggest to release that shortly, in 
> case anybody else made the mistake of upgrading soon after the initial 
> Yosemite release ;-)  Please review
>
> http://trac.sagemath.org/query?status=needs_review&keywords=~yosemite
>
> and any outstanding blocker bugs...
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

Re: [sage-devel] SPKG Maintainers??

[Francois Bissey]

+1
> On 29/10/2014, at 21:24, Jeroen Demeyer  wrote:
> 
> Hello,
> 
> all SPKG.txt files list "SPKG Maintainers". I never quite understood the 
> reason for this. Mostly, this seems to have been added once when creating the 
> SPKG and indeed many "maintainers" have long left Sage. Since these sections 
> doesn't seem to have a purpose, can we just remove those?
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "sage-devel" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to sage-devel+unsubscr...@googlegroups.com.
> To post to this group, send email to sage-devel@googlegroups.com.
> Visit this group at http://groups.google.com/group/sage-devel.
> For more options, visit https://groups.google.com/d/optout.


This email may be confidential and subject to legal privilege, it may
not reflect the views of the University of Canterbury, and it is not
guaranteed to be virus free. If you are not an intended recipient,
please notify the sender immediately and erase all copies of the message
and any attachments.

Please refer to http://www.canterbury.ac.nz/emaildisclaimer for more
information.

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] Re: SPKG Maintainers??

[Volker Braun]

Agree, if you want to know who wrote what then git blame is much more 
useful than "SPKG Maintainers".



On Wednesday, October 29, 2014 8:24:14 AM UTC, Jeroen Demeyer wrote:
>
> Hello, 
>
> all SPKG.txt files list "SPKG Maintainers". I never quite understood the 
> reason for this. Mostly, this seems to have been added once when 
> creating the SPKG and indeed many "maintainers" have long left Sage. 
> Since these sections doesn't seem to have a purpose, can we just remove 
> those? 
>

-- 
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.

[sage-devel] SPKG Maintainers??

[Jeroen Demeyer]

Hello,

all SPKG.txt files list "SPKG Maintainers". I never quite understood the 
reason for this. Mostly, this seems to have been added once when 
creating the SPKG and indeed many "maintainers" have long left Sage. 
Since these sections doesn't seem to have a purpose, can we just remove 
those?


--
You received this message because you are subscribed to the Google Groups 
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at http://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.