On 2014-11-12 21:33, Ursula Whitcher wrote:
On 11/11/2014 4:46 AM, Jeroen Demeyer wrote:
* The sentence "A recent tweak of another part of Sage’s matrix code had
changed the definition of “small n” to n <= 63." is wrong:
what had changed is the bound on p to compute the determinant over GF(p)
u
On Wed, 12 Nov 2014, Travis Scrimshaw wrote:
That's exactly what I'm saying. With this change, that may not occur if
someone had overwritten interval() with some slightly different behavior in
a subclass and was calling closed_interval(), they would experience an
unexpected change (or, perhaps m
On 2014-11-12 23:09, William Stein wrote:
There's also maybe 5000+ (??) lines of examples in other documentation
You also forgot Cython files. I get a total of 239600 doctests (not
counting the non-English documentation since those are translated files):
$ find src/sage src/doc/en -type f |
IS that individual lines of doctests or doctest units themselves?
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On 2014-11-13 10:29, mmarco wrote:
IS that individual lines of doctests or doctest units themselves?
I don't know what a "doctest unit" is, but the answer is:
lines matching /^ *sage: /
Note that this count *excludes* the Sage notebook, since that's a
separate project (at least on paper).
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where Sage tried to find det(A) “modulo a few additional primes”. When a
prime p is large, Sage computes determinants (mod p) by lifting to Z. Sage
defines “large p” by reference to the size n of the matrix in question. A re-
cent tweak to another part of Sage’s matrix code had changed the definit
On 2014-11-12 21:35, Ursula Whitcher wrote:
Future releases of Sage will use FLINT, the Fast Library for Number The-
ory, to compute the determinants of integer matrices.
Today's "future" version will very likely be the current version when
this article is published.
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2014-11-12 21:18:56 UTC+1, Ursula Whitcher wrote:
All I can see from trac is that everything happened 22 months ago. How
> do I find how long it took to go from positive review to stable release?
>
Once logged into sage's trac, follow the top-right link to "Preferences"
then go to the "Date an
On 12 November 2014 20:35, Ursula Whitcher wrote:
> Article at
>
> http://people.uwec.edu/whitchua/notes/sagebugprocess.pdf
>
> has been updated based on feedback.
>
> UAW
A bit more feedback - from a non-mathematician.
1) It would be better if rather than over-writing an old version of
your
On 13 November 2014 11:19, Dr. David Kirkby (Kirkby Microwave Ltd)
wrote:
> You need to be a particularly confident use to report a bug in a trac
> ticket. I have reported bugs in software I know very little about, but
> enough to know there is a bug.
Of course I mean you do NOT have to be a part
On 12 November 2014 20:18, Ursula Whitcher wrote:
> On 11/11/2014 3:41 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
>
>> If I am honest, I am not that convinced it is a good follow up comment,
>
>
> OK, I won't put your name on it ;)
You can if I ultimately feel the submitted version is go
On Thursday, November 13, 2014 11:19:37 AM UTC, Dr. David Kirkby (Kirkby
Microwave Ltd) wrote:
>
> The mere fact they are "black boxes" means you don't have a clue
Which patches did Wolfram apply to ATLAS&GMP, and which versions did they
use? I know we apply patches, so its extremely unlikely t
On 2014-11-13 12:19, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
di erent(sic)
con dent(sic)
I think these are font issues with your PDF reader. You are missing the
glyphs for the ligatures "ff" and "fi". I don't have this problem
(qpdfview on Gentoo Linux)
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LOn 13 Nov 2014 11:19, "Dr. David Kirkby (Kirkby Microwave Ltd)" <
drkir...@kirkbymicrowave.co.uk> wrote:
> 4) It might be worth briefly stating that if (hypothetically) such a
> bug was found in Sage, rather than just report the bug, the trio could
> have inspected Sage, determined the code used
On 13 Nov 2014 11:27, "Jeroen Demeyer" wrote:
>
> On 2014-11-13 12:19, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:
>>
>> di erent(sic)
>> con dent(sic)
>
> I think these are font issues with your PDF reader. You are missing the
glyphs for the ligatures "ff" and "fi". I don't have this problem (
So I tried to reinstall Sage 6.3. on my Lenovo Edge E540 with Ubuntu 12.04
in different ways, but "make" always fails because of the following error
message:
Error building Sage.
The following package(s) may have failed to build:
package: ecm-6.4.4
Here is the part of the log file that I thi
On 2014-11-13 15:58, Florian Mussner wrote:
So what can I do to make it work?
Upgrade your compiler toolchain or build Sage with SAGE_INSTALL_GCC=yes.
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Thank you, I will try that
Am Donnerstag, 13. November 2014 16:04:48 UTC+1 schrieb Jeroen Demeyer:
>
> On 2014-11-13 15:58, Florian Mussner wrote:
> > So what can I do to make it work?
> Upgrade your compiler toolchain or build Sage with SAGE_INSTALL_GCC=yes.
>
>
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Yes. Note also here:
http://mathworld.wolfram.com/AbsoluteValue.html
which says that complex derivative of d|z|/dz does not exist, as
Cauchy-Riemann equations do not hold for Abs(z). And:
"As a result of the fact that computer algebra programs such as
Mathematica generically deal with complex va
In those cases, those are functions (or classes), not methods, and so
they are "safe". There are cases where methods get aliased, and there the
user my experience something unexpected when first trying to subclass, but
they won't experience a sudden change when upgrading Sage. However I'm not
What i mean is that, for example:
sage: R. = PolynomialRing(QQ)
sage: I = R.ideal([x^2 - y ^2, x + y +1])
sage: I.groebner_basis()
[x + 1/2, y + 1/2]
Is just one doctest unit (since it is really one test going on, we only
check that the groebner basis coincides with the expected one). But it
in
On Thu, Nov 13, 2014 at 8:00 AM, mmarco wrote:
> What i mean is that, for example:
>
> sage: R. = PolynomialRing(QQ)
> sage: I = R.ideal([x^2 - y ^2, x + y +1])
> sage: I.groebner_basis()
> [x + 1/2, y + 1/2]
>
> Is just one doctest unit (since it is really one test going on, we only
> check that
Is there some Python idiom to alias class methods that respects
subclassing? Usually the docstring of aliases in Sage containes less
examples, and when the original method is updated (e.g. warn about an
edge case), there is a risk of not updating the alias' docstring.
What I would like to see
> I would like to see is, assuming we have something like
>
> class C(object):
> def foo():
> "The full docstring of foo"
>
> alias(foo, "bar")
+1 to that !
Nathann
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>
> > All I can see from trac is that everything happened 22 months ago. How
> do I
> > find how long it took to go from positive review to stable release?
>
> ... a search of sage-release would show the dates when the
> release manager made a particular release. I think times (in days) are
On 2014-11-13 17:07, William Stein wrote:
It would be nice if somebody wrote a more sophisticated scanner to
compute the number of "doctest units", as you suggest above.
I'm sure this could be added easily to the doctest framework. I don't
really see the point though... a single "doctest unit" c
Sage's wrapping of NTL should be just fine as long as it's declared in
the Cython declarations, but there's a question of all the libraries
that use NTL indirectly which may have more difficulty adapting to
exceptions being thrown though their call stacks.
On Tue, Nov 11, 2014 at 3:48 PM, Francesc
Spanish speakers:
After some neglect, #7192, #10165, and #10180 are ready for review,
hopefully just minor edits needed?
(And for those great at tracking down subtle Sphinx errors, #10180 has one
of those...)
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On Thu, Nov 13, 2014 at 8:53 AM, Jeroen Demeyer wrote:
> On 2014-11-13 17:07, William Stein wrote:
>>
>> It would be nice if somebody wrote a more sophisticated scanner to
>> compute the number of "doctest units", as you suggest above.
>
> I'm sure this could be added easily to the doctest framewo
It has always seemed very inconvenient to me that "computer algebra
programs such as Mathematica" choose to define derivative as
complex-derivative. I believe a reasonable alternative is what is
known as a Wirtinger derivative. Wirtinger derivatives exist for all
continuous complex-valued functio
On 13 November 2014 12:16, Bill Page wrote:
>
> The Wirtinger derivative of abs(x) is 1/2 x/abs(x). Its total
> Wirtinger derivative is x/abs(x).
>
Sorry, I should have written that the Wirtinger derivative of abs(x) is
1/2 conjugate(x)/abs(x)
Bill.
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Can we create an environment... where character matters, hard work is
respected, humility is valued, and support for one another is
unconditional?
I admittedly stole that quote, but only because I wholeheartedly agree it
is good to always aspire to better ourselves. Some of the Sage developers
On Thu, Nov 13, 2014 at 10:48 AM, Volker Braun wrote:
> Can we create an environment... where character matters, hard work is
> respected, humility is valued, and support for one another is unconditional?
>
> I admittedly stole that quote, but only because I wholeheartedly agree it is
> good to al
Hi
Great to have in place to refer to as an educational guideline (not to be
abused as strict rules).
It could also mention core values of Libre Software, with additional
emphasis on scientific transparency.
Regards,
Jan
On 13 November 2014 21:00, William Stein wrote:
> On Thu, Nov 13, 2014 a
>
> > good to always aspire to better ourselves. Some of the Sage developers
> who
> > are better with words than me went ahead and stole a lot more, mostly
> from
> > Fedora (http://fedoraproject.org/code-of-conduct) and Django
> > (https://www.djangoproject.com/conduct), to formulate a "Cod
We had a similar problem with the complex derivative of logarithms in
combination with the complex conjugate, where I also the
use of Wirtinger Operators would solve the problem:
https://groups.google.com/forum/?hl=en#!topic/sage-support/bEMPMEYeZKU
Having them in Sage would be a great achieveme
>
>
> This is in some sense good, since we don't have to care about the
> derivative at zero,
> but in an other sense it is not so good, since the subdifferential ∂abs(0)
> = [0,1] is a bounded and with this definition one could come to the false
> conclusion that abs(x)
> has a pole, althoug
Hi Bill,
On Thu, Nov 13, 2014 at 10:16 AM, Bill Page wrote:
> It has always seemed very inconvenient to me that "computer algebra
> programs such as Mathematica" choose to define derivative as
> complex-derivative. I believe a reasonable alternative is what is
> known as a Wirtinger derivative.
On 11/13/2014 3:05 AM, Jeroen Demeyer wrote:
On 2014-11-12 21:33, Ursula Whitcher wrote:
On 11/11/2014 4:46 AM, Jeroen Demeyer wrote:
* The sentence "A recent tweak of another part of Sage’s matrix code had
changed the definition of “small n” to n <= 63." is wrong:
what had changed is the boun
It worked, thank you very much!
Am Donnerstag, 13. November 2014 16:04:48 UTC+1 schrieb Jeroen Demeyer:
>
> On 2014-11-13 15:58, Florian Mussner wrote:
> > So what can I do to make it work?
> Upgrade your compiler toolchain or build Sage with SAGE_INSTALL_GCC=yes.
>
>
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On 2014-11-13, Volker Braun wrote:
> Can we create an environment... where character matters, hard work is
> respected, humility is valued, and support for one another is
> unconditional?
Yes, I think you can, although I think formulating a code of conduct
is mostly a distraction. People take
> The answer to your original question "IS that individual lines of
> doctests or doctest units themselves?" is clear since Jereon posted the
> (very nice) code he used to compute the total:
>
> $ find src/sage src/doc/en -type f |xargs cat | grep -c '^ *sage: '
> 239600
>
>
Using ag I find:
Hi!
On 2014-11-13, William Stein wrote:
> For concreteness:
>
> [ ] Yes, this is a great idea. About time!
>
> [ ] This looks good, but it would be better if... (insert suggestions).
>
> [ ] No, I greatly value the freedom to spout offensive profanity, and
> will fork Sage in frustration if ther
Hi Robert,
On 2014-11-13, Robert Dodier wrote:
>> Can we create an environment... where character matters, hard work is
>> respected, humility is valued, and support for one another is
>> unconditional?
>
> Yes, I think you can, although I think formulating a code of conduct
> is mostly a dist
On Wednesday, 12 November 2014 21:27:50 UTC+11, Volker Braun wrote:
>
> The Sage code style is that methods are preferred over properties if in
> doubt. And even in plain Python I would really recommend to only use
> properties for static accessors. If you need to make a computation, use a
> met
On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík wrote:
> Hi Bill,
>
> On Thu, Nov 13, 2014 at 10:16 AM, Bill Page
> wrote:
>> It has always seemed very inconvenient to me that "computer algebra
>> programs such as Mathematica" choose to define derivative as
>> complex-derivative. I believe a rea
On 13 November 2014 19:24, Ondřej Čertík wrote:
> On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík
> wrote:
>>
>> As you said, the function is analytic if it doesn't functionally
>> depend on conjugate(z), as can be shown easily. So |z| or
>> Re z are not analytic, while z^2 is. If the function is
Sorry, I hit send before I was quite ready. To continue ...
On 13 November 2014 19:24, Ondřej Čertík wrote:
> On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík
> wrote:
> ...
> For example, for |z| we get:
>
> |z|' = \partial |z| / \partial x = d |z| / d z + d |z| / d
> conjugate(z) = conjugate(z
I believe we need to have such a code-of-conduct posted stating the
manner in which we should act. Like Jan and Simon, this should not be some
strict set of rules that gets referenced every time someone feels another
developer is out of line. By publishing such a code, we give explicit
guide
Hi,
I have used method aliasing (such as "frobenius = frobenius_endomorphism")
a lot. What should I be doing instead, and what is the problem? (I have to
admit this thread was TL;DR to me.)
Best regards,
Darij
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Yo !
I have used method aliasing (such as "frobenius = frobenius_endomorphism")
> a lot. What should I be doing instead, and what is the problem? (I have to
> admit this thread was TL;DR to me.)
>
1) Build a class with a method named A, aliased by B
2) Extend this class and redefine A
B still po
Hi Nathan,
On Thu, Nov 13, 2014 at 11:07 PM, Nathann Cohen wrote:
> 1) Build a class with a method named A, aliased by B
> 2) Extend this class and redefine A
>
> B still points toward the old A.
OK, I see. Well, good enough that the classes I am talking about are
not usually extended.
Best r
I agree with Travis that it is good to have guidelines that one can point
people to if discussions escalate. I agree that it is best to try to work
things out mutually, but this does not always seem possible. So ...
[X ] Yes, this is a great idea. About time!
Best,
Anne
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The only clean solution for this behaviour would be a warning e.g:
"Warning: This Identity holds only almost everywhere!"
But I don't know if it's worth the effort ...
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Hi Travis,
On 2014-11-14, Travis Scrimshaw wrote:
>To give a counterpoint to Simon's analogy, we agree that bullying is
> bad, but by the rules, we can tell bullies explicitly what their doing is
> wrong, why we can't push the bullies down, and explain what will happen if
> the behavior es
On Friday, November 14, 2014 3:55:34 AM UTC+1, Travis Scrimshaw wrote:
>
> Bullying can get so bad that the teachers need to step in and enact the
> correct punishment.
>
...yet, in my experience, they usually don't, and often because the bullies
are likable, or socially influential (e.g., son o
On Thu, Nov 13, 2014 at 6:56 PM, Bill Page wrote:
> Sorry, I hit send before I was quite ready. To continue ...
>
> On 13 November 2014 19:24, Ondřej Čertík wrote:
>> On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík
>> wrote:
>> ...
>> For example, for |z| we get:
>>
>> |z|' = \partial |z| / \pa
On Fri, Nov 14, 2014 at 12:14 AM, Ondřej Čertík wrote:
> On Thu, Nov 13, 2014 at 6:56 PM, Bill Page wrote:
>> Sorry, I hit send before I was quite ready. To continue ...
>>
>> On 13 November 2014 19:24, Ondřej Čertík wrote:
>>> On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík
>>> wrote:
>>> ...
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