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)
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
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
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 and
On 12 November 2014 20:35, Ursula Whitcher whitc...@uwec.edu 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
On 13 November 2014 11:19, Dr. David Kirkby (Kirkby Microwave Ltd)
drkir...@kirkbymicrowave.co.uk 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
On 12 November 2014 20:18, Ursula Whitcher whitc...@uwec.edu 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
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 ATLASGMP, and which versions did they
use? I know we apply patches, so its extremely unlikely that
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 to
On 13 Nov 2014 11:27, Jeroen Demeyer jdeme...@cage.ugent.be 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
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
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
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.x,y = 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
On Thu, Nov 13, 2014 at 8:00 AM, mmarco mma...@unizar.es wrote:
What i mean is that, for example:
sage: R.x,y = 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
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
far
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 can
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,
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 jdeme...@cage.ugent.be 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
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
On 13 November 2014 12:16, Bill Page bill.p...@newsynthesis.org 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
On Thu, Nov 13, 2014 at 10:48 AM, Volker Braun vbraun.n...@gmail.com 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
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 wst...@gmail.com wrote:
On
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 Code of
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
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 by
Hi Bill,
On Thu, Nov 13, 2014 at 10:16 AM, Bill Page bill.p...@newsynthesis.org 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
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 bound
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 vbraun.n...@gmail.com 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
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:
sage:
Hi!
On 2014-11-13, William Stein wst...@gmail.com 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
Hi Robert,
On 2014-11-13, Robert Dodier robert.dod...@gmail.com 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
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
method.
On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík ondrej.cer...@gmail.com wrote:
Hi Bill,
On Thu, Nov 13, 2014 at 10:16 AM, Bill Page bill.p...@newsynthesis.org
wrote:
It has always seemed very inconvenient to me that computer algebra
programs such as Mathematica choose to define derivative as
On 13 November 2014 19:24, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík ondrej.cer...@gmail.com
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
Sorry, I hit send before I was quite ready. To continue ...
On 13 November 2014 19:24, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík ondrej.cer...@gmail.com
wrote:
...
For example, for |z| we get:
|z|' = \partial |z| / \partial x = d |z| / d 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
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 points
Hi Nathan,
On Thu, Nov 13, 2014 at 11:07 PM, Nathann Cohen nathann.co...@gmail.com 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
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 tsc...@ucdavis.edu 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
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 of
On Thu, Nov 13, 2014 at 6:56 PM, Bill Page bill.p...@newsynthesis.org wrote:
Sorry, I hit send before I was quite ready. To continue ...
On 13 November 2014 19:24, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On Thu, Nov 13, 2014 at 2:00 PM, Ondřej Čertík ondrej.cer...@gmail.com
wrote:
...
On Fri, Nov 14, 2014 at 12:14 AM, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On Thu, Nov 13, 2014 at 6:56 PM, Bill Page bill.p...@newsynthesis.org wrote:
Sorry, I hit send before I was quite ready. To continue ...
On 13 November 2014 19:24, Ondřej Čertík ondrej.cer...@gmail.com wrote:
On
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