On Thu, Oct 13, 2016 at 3:16 PM, John Cremona
wrote:
> Thanks Peter for the explanation. Nevertheless, I'm not sure that the
> normal user could have guess that one only gets the clever stuff
> (compatible embeddings into the algebraci closure. The docstring GF?
> does imply this but again does
Preprints won't have MR numbers. I also find MR numbers less readable.
We could just append letters ("a" then "b," etc) if there are collisions.
David
On Wed, Sep 21, 2016 at 4:38 AM, 'Martin R' via sage-devel <
sage-devel@googlegroups.com> wrote:
> Why not use the MR number as reference format
On Jul 7, 2016 07:13, "Andrew" wrote:
>
> Hi!
>
> How do you doc-test output that starts with ...? The particular output
that I want to test is:
>
> sage: print(CartanType(['A', oo]).ascii_art())
> ...---O---O---O---O---O---O---O---...
> -3 -2 -1 0 1 2 3
>
You could do
sage: print(
On Jul 5, 2016 12:11, "Erik Bray" wrote:
>
> Hi all,
>
> Several of you have had issues updating your SSH keys in Trac since
> the server upgrade (or adding new keys for new users).
>
> (I hope) the issue is resolved now, and I would like to give a brief
> post-mortem on the issue:
>
> - gitolite,
On Fri, Jun 24, 2016 at 12:16 AM, Erik Bray wrote:
> On Jun 24, 2016 04:06, "David Roe" wrote:
> >
> > I just updated git-trac-command and tried "git trac push", and got
> > remote: File "/usr/lib/python2.7/xmlrpclib.py", line 792,
I just updated git-trac-command and tried "git trac push", and got
remote: Traceback (most recent call last):
remote: File "./hooks/post-receive.d/01-trac_branch", line 180, in
remote: for number, ticket in trac.ticket_iter(branch):
remote: File "./hooks/post-receive.d/01-trac_branch", li
Google for python raw strings. The main difference is how they treat
backslashes.
On May 13, 2016 09:34, "saad khalid" wrote:
> Thanks for the help everyone. I've got it submitted here, hopefully I
> followed the procedure properly
>
> http://trac.sagemath.org/ticket/20595#comment:3
>
> Also, sor
There's no precision here: they're exact elements. It should be easier to
deal with than some similar problems with fraction fields of multivariate
polynomial rings, since we only have to worry about monomials in the
denominator.
I made some comments on the ticket.
David
On Sat, Apr 23, 2016 at
Actually, it looks like this address might be better.
David
On Thu, Apr 21, 2016 at 2:19 PM, David Roe wrote:
> I've CCed Soroosh. I'm not sure which package you were referring to.
> David
>
> On Thu, Apr 21, 2016 at 4:58 AM, mmarco wrote:
>
>> I have emai
I've CCed Soroosh. I'm not sure which package you were referring to.
David
On Thu, Apr 21, 2016 at 4:58 AM, mmarco wrote:
> I have emailed the maintainers whose email address I could locate. someone
> knows how can I contact Michael Abshoff, Soroosh Yazdani
> or Mitesh Patel?
>
>
> El miércole
I think that having an optional Sphinx block is a good idea. Perhaps it
could be colored differently in the html documentation (like WARNING blocks
are)? When printing on the command line, I think we're just used to the
#optional tag. It's unclear to me whether the #optional tag or an OPTIONAL
b
On Sat, Apr 9, 2016 at 12:33 PM, Ahmed Fasih wrote:
> Hi everyone, it may be time to revisit Sage & Intel's high-performance
> libraries—Intel's Community License Program launched a few months ago and
> gives no-cost, royalty-free licenses for MKL, TBB, IPP, & DAAL:
> https://software.intel.com/e
On Sat, Apr 9, 2016 at 12:12 PM, Dima Pasechnik wrote:
>
>
> On Saturday, April 9, 2016 at 4:53:50 PM UTC+1, lundy@gmail.com wrote:
>>
>> I believe I have found a bug, and was not able to find any previous
>> report or ticket to have it fixed.
>>
>> I would expect the indefinite_integral meth
I think that this summary is right, including the explicit conversion that
relies on the index in gens().
David
On Sat, Apr 9, 2016 at 4:15 AM, Volker Braun wrote:
> Let me try to summarize the expected behavior: If there is a coercion of
> the base rings, then there should be a coercion to the
On Thu, Mar 31, 2016 at 7:11 PM, Justin C. Walker wrote:
>
> On Mar 31, 2016, at 15:37 , Vincent Delecroix wrote:
>
> > On 31/03/16 18:22, Johannes wrote:
> >> On 31.03.2016 23:08, Justin C. Walker wrote:
> >>> 2. Is there a way to tell, when hasattr(X, "foo") returns True,
> >>> whether "X.foo"
I'm not sure what's going on with the docbuild, but FYI you should be able
to run Sage (documentation is built after Sage is built). What happens
when you run /mnt/zeta/sage-7.1/sage?
David
On Wed, Mar 30, 2016 at 8:20 PM, miguel wrote:
> Hello,
>
> I am trying to compile from source. I am run
On Tue, Mar 22, 2016 at 10:13 PM, Dima Pasechnik wrote:
> we now decompress tarfiles with python
>
> https://docs.python.org/2/library/tarfile.html
>
> and all the features of it are only in Python 2.7. Hmm...
>
This seems like a bad idea; there are lots of systems that won't have
Python 2.7.
Da
On Fri, Mar 18, 2016 at 2:39 PM, Dima Pasechnik wrote:
>
>
> On Friday, March 18, 2016 at 5:06:59 PM UTC, David Roe wrote:
>>
>>
>>
>> On Fri, Mar 18, 2016 at 12:55 PM, Dima Pasechnik
>> wrote:
>>
>>>
>>>
>>> On Friday, M
On Fri, Mar 18, 2016 at 11:14 AM, William Stein wrote:
> On Fri, Mar 18, 2016 at 8:11 AM, Volker Braun
> wrote:
> > On Friday, March 18, 2016 at 4:06:04 PM UTC+1, William wrote:
> >>
> >> > Also, your use case is a bit weird; Parallel installations on the same
> >> > server?
> >>
> >> It's David
Here's a use case where the recent changes to relocatability are really
annoying. I'd like 6 sage installs in an SMC project so that different
groups at Sage Days 71 can work independently. So I tried building a copy
from source and then copying it five times.
Unfortunately, the relocation scrip
nd using
>> > binaries) and they were SOL because their system bash was linked
>> against the
>> > wrong version of some library. If you can't compile it you surely can't
>> use
>> > it 6 times.
>>
>> David Roe had no trouble compiling Sage
The behavior for floating point is governed by IEEE standards, which
dictate +infinity in this case. So I think this is not a bug.
On Mar 9, 2016 10:13, "Vincent Delecroix" <20100.delecr...@gmail.com> wrote:
> Hello,
>
> Compare
>
>
> sage: 1 / 0
> Traceback (most recent call last):
> ...
>
Have you used git before? Have you made a branch yet for your code?
If you have specific questions, you're welcome to ask them here; it may
help others!
David
On Thu, Mar 3, 2016 at 5:32 PM, Marco Cognetta
wrote:
> Hi all,
>
> I created a ticket to add Turan Graphs (
> https://en.wikipedia.org
On Tue, Mar 1, 2016 at 11:43 AM, Nils Bruin wrote:
> On Tuesday, March 1, 2016 at 8:15:56 AM UTC-8, William wrote:
>>
>> -1 to telling users that a syntax is deprecated and will be removed, but
>> planning to never remove it.
>>
>> +1 to executing the removal.
>
> We can't let a lottery like this
to implement the monomial_divides function in that class? I
> think the current function just checks the exponents and it's lack is
> preventing the groebner basis from running.
>
> On Monday, February 29, 2016 at 2:25:45 PM UTC-6, David Roe wrote:
>>
>>
>>
>
On Mon, Feb 29, 2016 at 9:19 AM, Ben Hutz wrote:
> I was exploring some quotient ring operations and came across the
> following:
>
> {{{
> R.=QQ[]
> K.=NumberField(y^3 + 2*y - 2401)
> k.=K.quo(K.prime_factors(7)[1])
> R.=PolynomialRing(k)
> R.monomial_divides(y,x^3*y)
> Error
> }}}
>
> {{{
> R.=
On Sun, Feb 28, 2016 at 5:11 AM, mmarco wrote:
> I definitely vote for making it optional, and try to make it standard soon.
>
Agreed. I'm also interested in the modular representation part of
meataxe. Is that functionality exposed in the current package or will that
require more Cython wrappe
On Mon, Feb 22, 2016 at 9:28 PM, kcrisman wrote:
> I'm not part of this community, yet, may be never, but from my perspective
>> You are welcome "back" any time.
>>
>
> +1
>
> Though in open source development (at least in open development projects
> like this one) meaning that sometimes people w
On Thu, Feb 11, 2016 at 1:59 PM, Florent Hivert
wrote:
> On Thu, Feb 11, 2016 at 01:07:06PM -0500, David Roe wrote:
> > One option would be to use underscore methods to make the coverage script
> > happy.
>
> ??? Do you mean that underscore method don't need to be test
One option would be to use underscore methods to make the coverage script
happy. I'm not sure if you'd be able to solve all of your problem like
this though.
You might also look into generalizing the 32-bit and 64-bit flags in
sage/doctest/sources.py (search for "bit") to incorporate different do
On Sun, Feb 7, 2016 at 9:16 AM, Travis Scrimshaw wrote:
>
>
> On Sunday, February 7, 2016 at 7:54:03 AM UTC-6, Jeroen Demeyer wrote:
>>
>> On 2016-02-07 14:50, Travis Scrimshaw wrote:
>> > So then what do you think about the current behavior, where if there
>> > is no (implemented) is_prime(), we
On Sat, Feb 6, 2016 at 11:19 AM, John Cremona
wrote:
> Thanks for the replies and suggestions. I am not sure what is the
> best thing to do. I can see three different needs here:
>
> (1) Any deterministic total order for python sorting to be possible
> and consistent. For example, a function w
On Fri, Feb 5, 2016 at 1:20 PM, Vincent Delecroix <20100.delecr...@gmail.com
> wrote:
> Hello,
>
> Indeed, the definition given in the documentation of "is_prime" does not
> coincide with what the method is doing.
>
> The mathematical definition of prime *depends* on the ring. An element of
> a ri
On Mon, Jan 25, 2016 at 8:42 PM, Samuel Lelievre
wrote:
> When starting the Sage REPL, we currently display the following advice:
>
> Type "notebook()" for the browser-based notebook interface.
> Type "help()" for help.
>
> We could add a few more hints that answer frequently asked questi
Thanks; that worked.
David
On Sun, Jan 24, 2016 at 4:10 AM, Jeroen Demeyer
wrote:
> On 2016-01-23 22:34, David Roe wrote:
>
>> python -u setup.py install
>>
>> Traceback (most recent call last):
>
Good idea, but it doesn't fix the problem. I'm still getting the same
result.
David
On Sat, Jan 23, 2016 at 4:49 PM, Travis Scrimshaw
wrote:
> DId you try ``make distclean && make``?
>
> Best,
> Travis
>
>
>
> On Saturday, January 23, 2016 at 3:34:56 P
I'm trying to merge sage-7.0 into http://trac.sagemath.org/ticket/812.
I've built a fresh sage-7.0 on SMC then did the following (after a bit of
fiddling around with other tickets)
git trac checkout 812
git merge master
make
It ends up with an error that looks like
Building interpreters for fast_
I raised some objections on the ticket.
David
On Fri, Jan 22, 2016 at 7:38 AM, Nathann Cohen
wrote:
> The 'constructor' file is being renamed to 'finite_field_constructor'
> in the following ticket:
>
> http://trac.sagemath.org/ticket/19941
>
> Nathann
>
> On 22 January 2016 at 12:13, Nathan
On Fri, Jan 22, 2016 at 10:15 AM, srozensz
wrote:
> sage: A. = Zq(4)
> sage: A(0)^0
> O(2^0)
Thanks. This is now http://trac.sagemath.org/ticket/19943
David
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On Wed, Jan 20, 2016 at 7:47 PM, Nils Bruin wrote:
> On Wednesday, January 20, 2016 at 3:22:54 PM UTC-8, Dima Pasechnik wrote:
>>
>>
>> to me, two fields that are specified by the same irreducible polynomial
>> over the same prime subfield ought to be identical.
>> it'd be much better design, no
On Wed, Jan 20, 2016 at 4:12 PM, Dima Pasechnik wrote:
> Here is a ticket with the new nauty release, and a proposal to make it a
> standard package.
> http://trac.sagemath.org/ticket/19919
>
> Please vote (it is already an optional package for long time, I think),
> and there are no more formal
nk :)
> I requested a trac account but haven't yet received any confirmation
> e-mail. Should I fire up a pull request ?
> If yes, to which branch - master or develop?
> If no, I'll open a ticket as you instruct and wait for your as well as
> fellow developers' suggestio
On Sat, Jan 2, 2016 at 10:00 PM, Marco Cognetta
wrote:
> Hi,
>
> I would like to implement some of the closure operations that are missing
> from the finite state machine code. Since there are several that are not
> implemented (intersection, difference, reversal, homomorphism, and inverse
> homo
Sorry, everyone. The message has been deleted (though not from your
inboxes), and the sender doesn't have permission to post again.
David
On Sat, Jan 2, 2016 at 2:11 PM, skype: wrote:
> Buy Good Samples of MDMA - BK-MDMA, METHYLONE , BUTYLONE , HEROINE ,
> COCAINE, POWDER , KITAMINE ,MDPV, APVP
On Fri, Jan 1, 2016 at 7:01 AM, kcrisman wrote:
>
>
> And we are not removing it for all the legacy reasons that you listed.
>> This thread is about what format new notebooks are supposed to be. Anybody
>> who prefers SageNB can still use SageNB
>>
>>
> But how easy will that be? It already soun
On Mon, Dec 21, 2015 at 8:53 AM, Volker Braun wrote:
> On Monday, December 21, 2015 at 5:43:29 PM UTC+1, John Cremona wrote:
>>
>> Of course it does but no mathematician would ever write that in notation
>> as ~x.
>>
>
> Its still a minor optimization (avoids coercion in 1/x), so I'm not so
> sur
On Mon, Nov 23, 2015 at 8:24 AM, Eric Gourgoulhon
wrote:
> Hi,
>
> Le lundi 23 novembre 2015 10:55:40 UTC+1, Jeroen Demeyer a écrit :
>>
>> Of course, you could argue that Element
>> should not have __add__ and __mul__ (since not all elements can be added
>> or multiplied). But it doesn't really
On Thu, Nov 12, 2015 at 3:13 PM, Jori Mäntysalo
wrote:
On Thu, 12 Nov 2015, Daniel Krenn wrote:
>
> True. Does this mean that you want to use x and y in the calling
>> function (e.g. catch the exception there and raise a different exception
>> explaining what is going on using x and y)?
>>
>
> Ex
On Thu, Nov 12, 2015 at 9:34 AM, Daniel Krenn wrote:
> On 2015-11-12 08:45, Jori Mäntysalo wrote:
> > LatticePoset({'a':['b', 'c'], 'b':['d', 'e'], 'c':['d', 'e'],
> > 'd':['f'], 'e':['f']})
> >
> > returns "ValueError: Not a lattice." I would like to see for example
> > "Not a lattice: no meet f
On Sat, Nov 7, 2015 at 3:24 PM, Nathann Cohen
wrote:
> We should follow Python; this has an added benefit of typically keeping
>> error messages more concise.
>>
>
> One very common occurrence of a long exception message are the
> PackageNotFoundError which happen when one calls a function which
On Sat, Nov 7, 2015 at 6:28 PM, Travis Scrimshaw wrote:
> Hey Simon,
>
> >> >I would then be advocating for using UniqueRepresentation if that
>> was
>> >> > the only issue.
>> >>
>> >> It really depends whether in comparing manifolds you would prefer to
>> do
>> >> *some*
>> >> heuristics to
> > In any case, it's only a warning. The Sage library has the same problem
> > but we compile with -w to ignore warnings.
>
> Ok I see. So the -w is an option to which command exactly? Not the same as
> the one I use I guess (installing an spkg with sage -p).
>
It's a flag for gcc.
David
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>
> [ X] 'foo?' should NOT display TESTS blocks.
>
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Thanks for the example! I'm hoping to work on p-adic linear algebra over
the next few months, and having examples of failures is always useful to
test improvements.
But that's a pretty impressive discrepancy, between 1345499989865120018402
and 0. I don't have time to look into it now, but I woul
On Wed, Oct 14, 2015 at 4:26 AM, Volker Braun wrote:
> On Wednesday, October 14, 2015 at 8:27:44 AM UTC+2, jplab wrote:
>>
>> -it would be a good idea to warn the user if some results may be wrong
>> due to the used ring. Perhaps this deserves a ticket on its own.
>>
>
> I think thats a bit silly
On Wed, Oct 7, 2015 at 2:06 PM, Dima Pasechnik wrote:
> On Wednesday, 7 October 2015 11:00:14 UTC-7, Jeroen Demeyer wrote:
>>
>> On 2015-10-07 19:31, David Roe wrote:
>> > In OS X 10.11, Apple changed the operating system to no longer allow
>> > modification of
Wed, Oct 7, 2015 at 2:00 PM, Jeroen Demeyer
wrote:
> On 2015-10-07 19:31, David Roe wrote:
>
>> In OS X 10.11, Apple changed the operating system to no longer allow
>> modification of certain system folders, even when logged in as root.
>>
>
> Why would Sage need mod
tection may allow you to
build Sage, but it also disables a security feature of your operating
system.
David
On Wed, Oct 7, 2015 at 12:52 PM, William Stein wrote:
>
>
> On Wednesday, October 7, 2015, David Roe wrote:
>
>> Do you want to mention the possibility of disabling sy
Do you want to mention the possibility of disabling system integrity
protection, or are you purposefully avoiding that option?
David
On Wed, Oct 7, 2015 at 12:38 PM, William Stein wrote:
> Hi,
>
> We need to post a statement on the Sagemath.org website about the El
> Capitan os x 10.11 situation
On Mon, Oct 5, 2015 at 2:29 PM, Jori Mäntysalo
wrote:
> Just a stupid side-question:
>
> On Sun, 4 Oct 2015, Victor Shoup wrote:
>
> Also, now that NTL is threadsafe, I'm looking at making some of the
>> low-level routines thread enhanced.
>>
>
> For up to 4 threads, I get close to linear speedup
My impression is that it's a new security feature for 10.11, preventing any
programs (even ones that have root privileges) from writing to certain
system folders. So as long as you don't run into any such malware,
disabling rootless should have no effect on you. :-)
David
On Fri, Oct 2, 2015 at
On Thu, Sep 17, 2015 at 6:05 PM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
>
>
> On 17/09/15 17:10, William Stein wrote:
>>
>> On Thu, Sep 17, 2015 at 1:04 PM, kcrisman wrote:
> it would be useful to revive the discussion of a
> true SageMath Foundation, separate from
One approach would be to change "RealNumber('%s')" % num on line 739
of sage.repl.preparse to "RealNumber('%s',min_prec=1000)" % num.
David
On Sat, Sep 12, 2015 at 12:24 PM, Thierry Dumont
wrote:
> I have a program with a lot of floating point constants/variables (this is a
> translation of a C++
Frédéric Chapoton was removing tab characters from the description
field on lots of old tickets. He has since stopped, upon request.
There's a recent thread about an alternate solution to the problem he
was trying to solve.
David
On Mon, Sep 7, 2015 at 12:56 AM, Dr. David Kirkby (Kirkby Microwave
Since you have an mpz_t, presumably you're writing in Cython. Then
you can do something like the following.
cdef mpz_t input
cdef Integer output = PY_NEW(Integer)
output.set_from_mpz(input)
Or something like
mpz_set(output.value, input).
David
On Wed, Aug 19, 2015 at 2:19 AM, Ralf Stephan wro
On Sat, Aug 15, 2015 at 3:00 AM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
> Hello,
>
> As mentioned by Søren on ask [1] the subs method of matrices behave
> differently than the subs method on coefficients
>
> sage: R. = PolynomialRing(ZZ)
> sage: m = matrix(R, [[x]])
>
> sage: x.
ynomial ring, a polynomial ring happens to be
> univariate, a field happens to have characteristic 2). Object orientation
> could be useful in preventing this from happening but maybe so can Sage's
> category framework?)
>
>
> On 11.08.2015 18:42, David Roe wrote:
>>
>>
We used to try to describe mathematical properties through Python
inheritance, but have since shifted to using Sage's category
framework. So I don't think that there's a particularly strong reason
to choose either CommutativeRing or QuotientRing_generic to inherit
from. Of course, as a Python cl
> Moreover, do we really want
>
> sage: log(QQ(8), 2).parent()
> Integer Ring
I would say yes. For rational x which is not a power of 2, log(x, 2)
will end up in the symbolic ring. But we should avoid this if
possible, and the only logs which are rational will actually be
integral, so we might a
It's because Integer(8) has a log method, while int(8) does not. Line
322-324 of sage/functions/log.py are
try:
return args[0].log(base)
except (AttributeError, TypeError):
David
On Fri, Jul 24, 2015 at 2:39 PM, Jeremy Martin
wrote:
> The following looks weird:
>
> sage: log(int(8)
On Fri, Jul 24, 2015 at 10:02 AM, Jeroen Demeyer wrote:
> Hello,
>
> usually, autotools-based packages are built using
>
> ./configure
> make
>
> which for Sage this has historically been just "make". However, I think that
> Sage should move to the "./configure && make" model, for various reasons:
It depends on exactly what you mean by undecidable, but this is the
definition of an inexact ring in some sense. So, p-adics, power
series rings, reals
David
On Fri, Jul 17, 2015 at 1:34 AM, Volker Braun wrote:
> On Friday, July 17, 2015 at 10:25:29 AM UTC+2, Ralf Stephan wrote:
>>
>> 1. Can
> By the way, does anybody know what the deal is with: "Please forgive
> me to send it to you for I am in China and have a problem to access
> Google groups."
>
> Do most people in China really not have access to Google groups? If
> so, that's a very good reason for us to consider at least some so
Another option might be to force certain construction paths to use keyword
arguments. For example,
matrix(4,4,scalar = x+y)
matrix(4,4,iterator = x+y)
David
On Fri, Jun 19, 2015 at 11:03 AM, Nils Bruin wrote:
> On Friday, June 19, 2015 at 9:10:41 AM UTC-7, Darij Grinberg wrote:
>>
>> > Unfortun
On Mon, Jun 15, 2015 at 12:07 AM, 'Martin R' via sage-devel <
sage-devel@googlegroups.com> wrote:
> Hi there!
>
> I would like to understand the (intended) purpose of the three classes
> Map, Morphism and PoorManMap.
>
> What I know so far:
>
> * Morphism inherits from Map, and provides a few more
00:11:02 UTC+2 schrieb David Roe:
>>
>>
>>
>> On Sun, Jun 14, 2015 at 9:43 AM, 'Martin R' via sage-devel <
>> sage-...@googlegroups.com> wrote:
>>
>>> I have now made a minimal non-working example, using one approach that
>>> would
On Sun, Jun 14, 2015 at 9:43 AM, 'Martin R' via sage-devel <
sage-devel@googlegroups.com> wrote:
> I have now made a minimal non-working example, using one approach that
> would look sensibel to me.
>
> It fails doing the assignment self._codomain = C in Map.__init__, which is
> something I do not
I would say that it's fine, especially in a subclass.
David
On Thu, Jun 4, 2015 at 9:23 AM, Bruno Grenet wrote:
> Dear all,
>
> Many classes in SageMath (most of them? all of them? I don't know...) have
> their attributes hidden by a leading `__`. Yet in Python hidden attributes
> are never re
On Wed, Jun 3, 2015 at 2:24 PM, Johan S. R. Nielsen
wrote:
> What is the sensible notion of parent() for a vector that I drew out of a
> vector subspace?
> For instance, what should be printed by the following lines?
>
> VS = (QQ^3).subspace([ (1, 1 ,1) ])
> v = VS.an_element()
> print v.parent()
Not a complete answer, but it's coming from matching the regular expression
re.compile(r"^\s*doctest:[0-9]")
See line 257 of sage/doctest/sources.py
David
On Tue, May 26, 2015 at 7:11 PM, David Perkinson wrote:
> Could someone help me with the following error message? I am making a lot
> of rev
s have Elements, this is also the root of operations that
> > deal with coercion (arithmetic between elements of unequal Parents).
> > Some functions like base_ring are used for coercion, though arguments
> > could be made that it could be moved elsewhere and called dynamically
> > if
On a related note, I get a similar error from within Sage. When I try to
create a free Z-module, Sage gives me an ImportError for core.numeric
(traceback included below). With this thread in mind, I tried reinstalling
ipython, but `make build` fails as well with a similar import error.
sage: M =
Parent should represent an object in a category that has a forgetful
functor to sets; CategoryObject an object in an arbitrary category. I have
no objection to moving the generator and name code to Parent.
David
On Tue, May 5, 2015 at 4:41 AM, Jeroen Demeyer
wrote:
> Hello,
>
> what are the typ
You're right, thanks.
David
On Wed, Apr 29, 2015 at 6:11 AM, Jeroen Demeyer
wrote:
> There is no problem with reducible polynomials, only with non-squarefree
> polynomials. The correct statement is:
>
> If your actual polynomial lies in the squarefree locus, it is possible to
> increase precisio
See http://trac.sagemath.org/ticket/15422. Jeroen and I had a disagreement
on what to do in this case, and ended up deciding that we should leave it
as an ArithmeticError for now, pending more work on factoring. Brian
Sinclair has a patch in progress at http://trac.sagemath.org/ticket/12561
imple
On the Sage side, it's in sage/groups/libgap_mixin.py, and just calls
G.gap().Random(). I'm not sure where the documentation or source code is
on the Gap side.
David
On Fri, Apr 24, 2015 at 9:27 AM, Jori Mäntysalo
wrote:
> For some time I wonder how to generate random matrices of Zmod(n). But
>
On Sun, Apr 19, 2015 at 10:18 AM, Volker Braun
wrote:
> I agree, coercion G -> M is probably the right thing to do here.
>
+1
> On Sunday, April 19, 2015 at 7:47:11 AM UTC-4, vdelecroix wrote:
>>
>> Hello,
>>
>> I really do not like
>>
>> sage: M = MatrixSpace(QQ,3)
>> sage: G = SL(3, QQ)
>> sa
It might be nice to have some sprint ideas that could be accessible to
people not in math. http://trac.sagemath.org/ticket/12720 is something
that I haven't had time to work on recently and doesn't involve any math.
I'll be around at the sprints tomorrow in case someone has an interest.
David
On
On Wed, Feb 11, 2015 at 10:31 AM, Marc Mezzarobba
wrote:
> (And then there is the situation where the parent does store values that
> you want to access from C or Cython code without paying the cost of a
> Python attribute access, but then I see no other option than making the
> parent a Cython c
This is a circular import error. If you look at the chain of imports,
you'll see that earlier you're in the file "sage/rings/all.py," and the
error occurs when you later try to import sage.rings.all.
A brief glance at your code doesn't reveal the cause of the problem for me,
though it could be re
I'm on OS X 10.9.2, Macbook Pro, tar --version returns
bsdtar 2.8.3 - libarchive 2.8.3
For me, your last line resulted in:
tar: Option --mtime=1970-01-01 01:00 is not supported
David
On Mon, Jan 12, 2015 at 5:59 AM, Thierry
wrote:
> Hi,
>
> it is advised to distribute unmodified upstream tarba
Take a look at sage/categories/pushout.py. You will need to define
construction() methods on both A and B, which return pairs (F_A, X_A) and
(F_B, X_B), where the F are ConstructionFunctors with F_A(X_A) = A and
F_B(X_B) = B. You then need to tell Sage how to merge F_A and F_B. See
pushout.py fo
There are also p-adic fields and others (function fields for example). I
don't think K(-1).is_square() is a good idea
David
On Fri, Dec 19, 2014 at 5:43 AM, wrote:
> On Friday, December 19, 2014 10:25:26 AM UTC+1, John Cremona wrote:
>>
>> It's quite possible that both of those were written
No, but that's a good idea. The functions you should look at are
filter_sources and sort_sources in sage.doctest.control. For adding
options to the parser for sage -t, see SAGE_LOCAL/bin/sage-runtests.
David
On Wed, Dec 17, 2014 at 6:33 AM, john_perry_usm wrote:
>
> hello!
>
> I can see why some
The difference is in how cpdef functions interact with Cython vs Python
classes. If you want to override a cpdef method in a *Python* subclass
then you must use def (of course). But in a *Cython* subclass, you must
use cpdef. If you accidentally use def instead in a Cython class then it
doesn't
On Thu, Dec 4, 2014 at 2:13 AM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
> 2014-12-04 9:32 UTC+01:00, David Roe :
>>> abs(matrix) is currently returning the determinant (and this goes back
>>> to the early implementation in 2006!). If anybody contests the fac
On Thu, Dec 4, 2014 at 2:04 AM, Vincent Delecroix
<20100.delecr...@gmail.com> wrote:
> Hi Simon,
>
> 2014-12-04 9:54 UTC+01:00, Simon King :
> (posted on sage-support)
>> Hi Vincent,
>>
>> On 2014-12-04, Vincent Delecroix <20100.delecr...@gmail.com> wrote:
>>> sage: M = matrix(RR, [[-1]])
>>> sage:
> abs(matrix) is currently returning the determinant (and this goes back
> to the early implementation in 2006!). If anybody contests the fact
> that it should return the matrix whose entries are the absolute value
> of the initial matrix, please tell me.
I don't think that it should be the matrix
d fiat
David
>
> John
>
>
> On Tuesday, November 25, 2014 7:14:21 PM UTC-8, David Roe wrote:
>>
>> I think that most people are ignoring the question because they don't
>> know the answer. The only person who can say for sure would be
>> Volker, a
I think that most people are ignoring the question because they don't
know the answer. The only person who can say for sure would be
Volker, and I don't know why he hasn't responded.
Personally, I wouldn't be surprised if it was just Volker, not a
larger group of people. I don't think there's a
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