orial content.
* A list of Python packages that attendees will need to have installed to
follow along.
Cheers,
Brian Granger
SciPy 2010, Tutorial Chair
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sage-devel+uns
Gonzalo,
On Mon, Mar 15, 2010 at 1:17 PM, Gonzalo Tornaria
wrote:
> On Mon, Mar 15, 2010 at 3:57 PM, Brian Granger
> wrote:
> > Thanks for describing this better, it helps me to understand what the
> > current _sig_on/_sig_off does. Because of the licensing issues, I am
>
William,
Fantasic, thanks for trying this!
Cheers,
Brian
On Mon, Mar 15, 2010 at 2:02 PM, William Stein wrote:
> On Mon, Mar 15, 2010 at 12:57 PM, Brian Granger
> wrote:
> > Gonzalo,
> > On Sun, Mar 14, 2010 at 9:21 PM, Brian Granger
> > wrote:
> >>
Gonzalo,
On Sun, Mar 14, 2010 at 9:21 PM, Brian Granger
wrote:
> > Gonzalo,
> > Thanks for starting this discussion. I am willing to help with this
> effort
> > as I definitely need this capability. Part of the challenge will be
> > figuring out how to do this on W
> no_signals? signals_disabled? This would give something like:
>
>with no_signals:
>...
>
>with signals_disabled:
>...
>
>
The current names in Sage of _sig_on/_sig_off are a bit confusing and the
names no_signals or signals_disabled carry forward that confu
Gonzalo,
Thanks for starting this discussion. I am willing to help with this effort
as I definitely need this capability. Part of the challenge will be
figuring out how to do this on Windows.
Eventually, I think we do want to capability to be built into Cython. But,
while we experiment with di
everyone!
Brian
On Wed, Mar 10, 2010 at 1:10 PM, Ondrej Certik wrote:
> On Wed, Mar 10, 2010 at 12:32 PM, Brian Granger
> wrote:
> > Ondrej,
> >
> > On Wed, Mar 10, 2010 at 12:25 PM, Ondrej Certik
> wrote:
> >>
> >> On Wed, Mar 10, 2010 at 11:18 A
Ondrej,
On Wed, Mar 10, 2010 at 12:25 PM, Ondrej Certik wrote:
> On Wed, Mar 10, 2010 at 11:18 AM, Robert Bradshaw
> wrote:
> > On Mar 10, 2010, at 11:01 AM, Brian Granger wrote:
> >
> >> Hello all,
> >>
> >> In the older Cython docs here:
> &
Martin,
Thanks for looking at this.
things are a slightly more complicated, authors of that code are at least:
>
> - William Stein (see copyright notice)
> - me (I rewrote them to be more efficient, i.e. save a syscall)
> - Gonzalo Tornaria (I think he worked on this?)
> - David Harvey (hg log br
William,
Yes. There are other copyright holders though.
>
>
Great, Martin below lists the other copyright holders. I will try to
contact everyone and ask. Once we have approval from all authors, can you
or someone change the license on those files in the sage trunk?
> The relevant code is in
Hello all,
In the older Cython docs here:
http://modular.math.washington.edu/home/was/www/home/gfurnish/old/sage-3.0.6/doc/prog/node55.html
The _sig_on and _sig_off macros are mentioned. But, when I try these in
current Cython it fails. I found this
thread started by Ondrej a few years ago:
h
Another thing to consider is memory bandwidth. Many calculations these days
are memory bandwidth bound, not disk/CPU bound. If you get a single machine
with lots of cores and lots of RAM this is more of an issue. The current
generation of Intel CPUs (the Xeon 5500's) are better with their triple
1. Physics Department, Cal Poly State University, San Luis Obispo
2. Lower division physics courses.
Cheers,
Brian
On Thu, Oct 15, 2009 at 9:18 PM, William Stein wrote:
>
> Hi,
>
> For a grant proposal, I would like to assemble a list of people
> running Sage notebook servers either publicl
At the same time, I think it would be big mistake to give up easy
> WYSIWYG editing of text cells. Is it easy to convert between HTML and
> ReST (both directions)? If so, I think it would be easy to make a text
> cell toggleable between TinyMCE and a textbox that would let you put in
> ReST.
>
>
> > Is there any way of organizing worksheets on a Sage notebook
> > server? If you have many worksheets, it can be difficult to find them
> > and it would be nice to be able to organize them using tags,
> > categories or folders. One example of this would be if wanted to
> > write a chapter base
Hi,
Is there any way of organizing worksheets on a Sage notebook server? If you
have many worksheets, it can be difficult to find them
and it would be nice to be able to organize them using tags, categories or
folders. One example of this would be if wanted to write a chapter based
book
using th
> I would expect apache to come with any relatively recent Unix or
>> unix-like box. Perhaps it's not installed by default though. (It is on
>> Solaris).
>>
>> I just checked and see the latest Apache is 6.6 MB, so not small, but
>> not particularly huge.
>>
>> Apache really is a standard. I don't
> Wait, so is a key point that if one builds Python for Sage as a
> framework, then Python is no longer contained in SAGE_ROOT/local/?
> Is that what you're saying? I can see numerous problems and
> confusion arising as a result. Hopefully it can still be in
> SAGE_ROOT/local, and maybe there i
William,
Thanks for clarifying some of the details of pexpect. I do really want to
understand this because I am starting to use the notebook more and currently
IPython's parallel stuff works fine (there are a few things that need to be
fixed on our side to make it easier though).
Moreover, as lo
> In the current architecture, a twistd daemon spawns a notebook server
> which is responsible for doing "sage" stuff. twistd is fully
> asynchronous, but the notebook process itself is a pexpect based
> blocking process connected with pipes to twistd. As such, the block
> on read by pexpect prec
Ondrej,
> Many thanks for this! Some comments below:
>
>>
>> Here is their main page for information about building VisIt:
>>
>> https://wci.llnl.gov/codes/visit/source.html
>>
>> Here is the "build_visit" shell script that will build visit from
>> source (check it out, it is 1 lines long and
Ondrej,
So I heard back from the VisIt devs and thankfully, they keep really
good records of how they build everything. What they go through to
build VisIt is insane. But here are the references that I think could
help you...
Here is their main page for information about building VisIt:
https
> One important
> thing to note is where the Framework goes. It will be installed in
> $SAGE_LOCAL/Frameworks. The bin and lib directories (where
> executables and site-packages) end up will be subdirectories of this.
> You will probably need to point PATH to something like
> $SAGE_LOCAL/Framewo
I am attaching my spkg-install script that I have used to generate a
Framework build of Python 2.5.1. You might have to tweak it for later
versions of Python, but this should get you started. One important
thing to note is where the Framework goes. It will be installed in
$SAGE_LOCAL/Frameworks.
Ondrej,
The traditional way of building VTK on a Mac is to build it as a Cocoa
or Carbon library. This means a couple of things:
* Python must be built as a framework.
* The Mac native GUI is used, not X11.
* You are using all of Apples OpenGL libraries.
If you stick to these assumptions, gett
> ah, right, I wasn't understanding your solution (for some reason, I
> thought you were using what we used before, not a new variable pointing
> to a new directory).
>
> +1 to your solution (I'd rather use your more standard directory name
> over William's non-standard name).
It is important to
> This sounds great. However, what do we do about every sage install that
> exists out there right now? Every .sage directory already has a
> matplotlibrc file that throws warnings with the current matplotlibrc.
> Back when the decision was made, some ideas were kicked around:
>
> 1. Make a FAQ
>> But, wait, does SAGE_HOME point to $HOME/.sage by default? That is
>> the right place for this, I just don't remember exactly where
>> SAGE_HOME points.
>
> Yep, it does. We can make sure easily enough by running Sage and asking:
>
> sage: DOT_SAGE
> '/Users/wstein/.sage/'
>
> By the way, I j
> I want to reopen this thread.
Great! matplotlib under Sage is still broken for me because of this
issue - I would love to see this resolved.
> I have a build farm with many (nearly 20) different OS's that all build and
> test
> Sage in parallel. My home directory on each of those machines i
> I agree that there still is a problem. Before, I didn't think that
> Sage's matplotlib would need to have different options to even be able
> to function.
The problem that I am running into is that my
~./matplotlib/matplotlibrc sets a backend (macosx) that the Sage
matplotlib doesn't have. Th
> Details are here: http://trac.sagemath.org/sage_trac/ticket/4774
I have skimmed though this as well as the previous thread on this
topic. But, it still seems like the original problem remains (Sage's
matplotlib using the wrong matplotlibrc) even though Sage no longer
includes its own matplotli
OK
On Mon, May 18, 2009 at 3:31 PM, Michael Abshoff
wrote:
>
> Hi Brian,
>
> no need to CC me on bug reports you send to sage-devel.
>
> Cheers,
>
> Michael
>
> >
>
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> Well I don't like it. So it sounds like a bug to me.
OK thanks. Could you or someone with a Sage Trac account create a
ticket for this? Oh, and Ondrej tried this on Linux but did not see
this bug.
Cheers,
Brian
--~--~-~--~~~---~--~~
To post to this group,
58 PM, Ondrej Certik wrote:
>
> On Mon, May 18, 2009 at 2:51 PM, Brian Granger
> wrote:
>>
>> Currently:
>>
>> IF a user has matplotlib installed outside of Sage
>> AND they have a matplotlibrc file in ~/.matplotlib
>>
>> THEN Sage will use the
Hi,
I want to use sage -sh to have my environment variables setup
properly. But on OS X sage -sh behaves in a very odd manner.
* /Users/bgranger/Sage/sage appears multiple times.
* The bin directory of Sage in put after some of my bin directories,
making it so Sage's version of things are not u
Currently:
IF a user has matplotlib installed outside of Sage
AND they have a matplotlibrc file in ~/.matplotlib
THEN Sage will use the non-Sage version in ~/.matplotlib/matplotlibrc.
If a user has set a frontend (such as WxAgg or any other GUI
frontend) that Sage doesn't have (most of them), m
> Are the custom libraries going to be .spkg as well? So, people using the
> full version of Sage can install them?
Yes, definitely.
Brian
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> Not right now. I'm sure Michael Abshoff would agree that we are way
> too busy just dealing with Sage itself.
OK, I am not surprised - Sage is an ambitious undertaking.
> However, note that there are two versions *right now* -- Sage and SPD
> -- and that this is not in any way increasing my w
> Yep, I know you need a trac account and I haven't gotten around to it.
> I discussed the patches with Ondrej yesterday in IRC and I would
> prefer if you posted them here since last time Ondrej found bugs in
> Sage's scripts it turned out mostly to be bugs in the way Ondrej used
> them.
I don't
>From a development perspective, it makes no sense to have two separate
projects (Sage/SPD). In working on SPD, I have already run into small
bugs in Sage's infrastructure. Currently, we have to fix such things
in both SPD and Sage and manage the respective tickets/patches for
both projects. Th
That is exactly what Ondrej (he has done most of the work) and I are
going with spdproject (Source Python Distribution):
http://code.google.com/p/spdproject/
We are just getting started, but we do have a base packages that includes:
numpy
scipy
ipython
sympy
the sage notebook
twisted/zope.inter
> As is Sage doesn't even build if you do a straight up framework build.
> This can and will be fixed, but if I have learned one thing about
> FrameWorks on OSX is to avoid them whenever possible, i.e that
> absolute crap issue with the IOKit and libpng has scared me for
> life ;)
What are the cu
> I apologize for the way I presented this. No offense was intended for
> anybody. I won't follow up in sage-flame, because it was never my
> intention to start a flame (I don't think this discussion has turned
> into a flame yet, neither by me or others, but I can see it has the
> potential to be
I just pinged the pythonmac-sig group about why and when a framework
build is actually needed. A while back I created an spkg for qt/pyqt
and I remember that I needed to do a framework build to get it to
work. My recollection is that if you want Python to be able to do
anything with the native M
> Well, I think what we should do is merge as much of SPD into Sage as
> possible to lessen the maintainance burden. One thing I could see here
> is to define SAGE_EXECUTABLE and you would just set it to spd in your
> code.
I think this is a good idea. I think if SPD is kept separate, it will
en
>> The build bits do not exist in ipython, but I think ipython should
>> have some good web notebook.
>
> Sure, competition is good for business. I just don't think this code
> is currently a priority for them and judging from the current
> discussion about getting 0.10 out the door I don't see an
> Indeed... but the OP claimed that a jpeg couldn't be a derived work of
> gimp because it's not a C++ program, which is a non sequitur.
Do you actually think a JPEG is a derived for of GIMP or do you
disagree with how I was arguing? If you merely disagree with my
argument, please don't misquote
>> sage-ultralight must have the same name as sage. Then you get into
>> copyright/trademark related issues (the name "sage" is already taken).
>> Just the same I could create a GUI toolkit named "Qt" that was also
>> released under the SACL license, but you can guess what would happen.
>
> Inco
>> I disagree. A jpeg or .doc file is not source code in any sense of
>> the word, thus the GPL is completely irrelevant (I think we agree on
>> that).
>
> That simply isn't so. To quote the GPL:
> "This License applies to any program or other work ..."
> "The "Program", below, refers to any such
> Note: this is a light-hearted response to a topic which I consider
> very grave. It's been claimed that the script
>
> from sage import Integer
> print Integer(2)+Integer(2)
>
> must be GPL'd. I claim that the above is a sage-ultralight script.
> I've attached an independent implementation of
> Licensing discussions just suck and are a waste of time. Sigh
Yes, I fully a agree with youexcept when people learn new things
about the GPL. I think some important things have come out of this
discussion:
* A notebook/Worksheet is source code and can potentially be a
derivative work
At the beginning of this thread, someone posted a link to the Sage worksheet:
http://abstract.ups.edu/sage-aata.html
That is 1) being publicly distributed and 2) is not being released
under the GPL.
Plus, anyone can create an account on the public Sage notebook
servers, so basically any workshe
William,
Thanks for your replies. I mostly want to know what the consensus
interpretation of these issues is amongst the Sage devs. Slowly, I am
getting a picture of what this consensus looks like.
> Publicly distributed code using GPL'd library must be GPL'd.
Great, to first order that is my
> It is interesting I think that of the two interpretations of the GPL
> represented by the many people in this thread, it seems that
> there are those in the "Rosen camp" as described in
> http://www.linuxjournal.com/article/6366, http://www.rosenlaw.com/lj19.htm
> (Rosen is general counsel of OS
Michael,
Thank you for bringing up this issue as it does clarify some aspect of
Sage derived code and licensing. But, in my mind, the "sage as
interpreter" aspect is a small perturbation on top of the zero-order:
Sage = Python + GPL libraries
That is, for the most part, I view the interpreter
> When you create something (book, photo, program) you automatically
> have a copyright in/on that work.
Yep.
> You may control the creation of
> copies. With a GPL/GFDL license you explicitly grant others further
> freedoms - someone may make unlimited copies. They may make
> modifications.
> I claim this is still silly.
Then I think you think the GPL is silly and I agree with you :-)
> Did you actually load Sage to write the
> above two lines? Or did you just type two lines in your email program?
> (My guess is the latter). So why in the world would the license for
> Sage affec
> Obviously everyone understands this differently. But I thought that if
> I have a script A:
>
> ---
> from sage.all import x
> print x**2
> ---
>
> Then my script has to be GPL, because it is dynamically loading a GPL
> library (without any runtime exception) *and* my script doesn't work
> The runtime exception is to allow the use of the gcc runtime, which is
> a library gcc links to your code when you need to produce a program
> which runs. AFAICT, if you replaced the gcc runtime with something
> else, or you just used the object files compiled by gcc (no linking),
> you wouldn't
> Sage functions in a simailr way that GIMP does. If I create an image in
> GIMP from scratch then I own the copyright to that image. The license of GIMP,
> which functions as an editor, a viewer, has it's own plugins for
> postprocessing, ...
> have nothing to do with it.
GIMP is written in a p
Brian,
> A sage worksheet is no more a derived work of Sage than a jpeg would
> be a derived work of Photoshop/GIMP or a .doc file would be a derived
> work of MS Office or OpenOffice.
I disagree. A jpeg or .doc file is not source code in any sense of
the word, thus the GPL is completely irrele
> How is it a derived work of Sage? That argument seems to lead to the
> conclusion that my C code would be considered a derived work of GCC.
Your GCC compiled code is a derived work and that (in my
understanding) is why there exists the so called "runtime exception"
to the GPL that covers this
> The Sage worksheet at
>
> http://abstract.ups.edu/sage-aata.html
>
> contains Sage code that was not written in a notebook. While that
> could be obvious if you actually looked at the file, technically I
> think there is no way to prove just where I wrote it - notebook or
> not.
Regardless of
>> At a conference in the last year, one of the Sage developers was asked
>> this question, and their answer was...
>>
>> "You can do whatever you want with your code, you don't have to
>> release it under the GPL"
> I'm pretty sure that is correct.
> http://www.gnu.org/licenses/gpl-faq.html#CanI
Hi,
I have a question about Sage and the GPL. Here is the main question..
IF I write code in a Sage notebook, AND I redistribute the code, do I
need to release my code under the GPL?
Here is a bit of background...
At a conference in the last year, one of the Sage developers was asked
this que
Personally, I think it is important to have access to source code. I
do in fact read the source code of Sage (and many other projects)
often. However, many people with whom I speak (user's of Matlab and
Mathematica) don't feel this is important. Their logic goes something
like this...
"I have
>> it'd be nice to have some easier way to handle C++ subclasses in
>> Cython. I don't know how it should be done though.
>
> Good point. If we can declare inheritance information, I believe we
> can use the same type infrastructure we use for cdef classes to
> handle this smootly.
I second this.
> It also includes all the sage interfaces (e.g. to matlab, etc.), and
> other interesting code. We don't want to restrict it just to the
> notebook. We may also include, e.g., all our 2d and maybe 3d plotting
> code, which is very lightweight too.
Ahh, very nice, this completely makes sense.
I agree that this is really great, but isn't the name a bit confusing?
Why not sagenotebook?
Brian
On Wed, Apr 15, 2009 at 2:26 PM, Ondrej Certik wrote:
>
> Hi,
>
> William and Mike has created the sagelite, which is just the Sage
> notebook, without any other Sage dependencies.
>
> http://tra
I did that, restarted Sage and my Browser. The ugly message has gone
away, but I still don't see pretty equations ;-( Is there something
else I need to do?
Brian
On Tue, Apr 7, 2009 at 2:17 PM, William Stein wrote:
>
> On Tue, Apr 7, 2009 at 12:55 PM, Brian Granger
> w
> That seems awfully complicated. How about (untested):
>
> sage_python = python
> from sympy import *
> python = sage_python
>
> or (even shorter, and still untested):
>
> from sympy import *
> restore('python')
Sure these may work, but in my mind they are temporary hacks.
> The %whatever synt
Hi,
I am using Sage 3.2.3 on my Mac (localhost notebook server). When I
load a notebook that has latex in it I get:
"It looks like jsMath failed to set up properly (error code -7).
I will try to keep going, but it could get ugly."
The thing that is odd is that when I load a notebook from the s
bug in sage though.
Brian
On Tue, Apr 7, 2009 at 12:04 PM, Ondrej Certik wrote:
>
> On Tue, Apr 7, 2009 at 11:01 AM, Brian Granger
> wrote:
>>
>> Hi,
>>
>> I am using the sage 3.2.3 notebook. I am using it in python mode and
>> am having trouble with symp
I just independently found this bug (I just posted to the list). The
problem seems to be with the line:
from sympy import *
line that both of us are using in python mode.
Brian
On Fri, Apr 3, 2009 at 8:11 AM, Ondrej Certik wrote:
>
> On Fri, Apr 3, 2009 at 8:04 AM, William Stein wrote:
>>
>
Hi,
I am using the sage 3.2.3 notebook. I am using it in python mode and
am having trouble with sympy:
from sympy import *
x = var('x')
Traceback (most recent call last):
File "", line 1, in
File "/Users/bgranger/.sage/sage_notebook/worksheets/admin/1/code/9.py",
line 6, in
print _su
Nice! What are the dependencies fir this?
On Mon, Mar 30, 2009 at 7:56 PM, Ondrej Certik wrote:
>
> On Mon, Mar 30, 2009 at 7:29 PM, William Stein wrote:
>>
>> On Mon, Mar 30, 2009 at 5:54 PM, Ondrej Certik wrote:
>>>
>>> Hi,
>>>
>>> I was looking a bit at what actually has to be done to get
>> > * just don't call it Sage
>>
>> I won't.
But, we will give Sage credit :)
> Yes, absolutely. I just wanted to make sure no one slabbed BSD license
> headers on top of scripts I have significantly contributed to without
> asking (and I did not think of you in that case, but there are other
> I'm curious: is there any chance that you'll use JMOL as a 3d molecular
> viewer? I've been curious about any uses in Sage of JMOL for its
> original intended purpose.
This is a great idea. I am working with Ondrej on this project and
there is not reason we can't do this. Currently, we don't
> IPython1 is a Python library that Sage ships that builds on MPI.
> Maybe Fernando or Brian (who I've just cc'd) can comment.
> We also build on Twisted, which is somewhat relevant for
> certain types of problems..
A few comments along these lines:
- mpi these days is actually really easy to bu
> Sure and it is certainly good to be discussed. I didn't want to be
> dismissive about the idea, it is just that I have been in the "debugging
> memory leaks in Cython extension" trenches for the last eight months and
> hence I do not trust python or its memory management at all any more.
>
> Just for the record, I think Brian isn't suggesting we do anything
> differently with Sage. He's writing lots of _new_ code using
> Cython for his distributed matrix arrays project, and ran into this problem,
> and thought -- surely the Sage folks have solved this. Then he looked
> at our
> Well, in the end you end up using sbrk() anyway, but I don't see what is
> wrong with malloc itself? sage_malloc was introduced a while back to
> make it possible to switch to a slab allocator like omalloc potentially
> to see if there is any benefit from it.
And that makes sense.
> Abso
> It's I think a general problem not only in Python but in programming
> in general. The authors of http://www.flintlib.org/ -- a pure C library --
> spent a lot of time worrying about this, just to I think decide that it's
> a really hard problem.
Very true.
> That said, there is definite
On Thu, Apr 10, 2008 at 10:27 AM, Michael.Abshoff
<[EMAIL PROTECTED]> wrote:
> Brian Granger wrote:
>
> > Hi,
> >
>
> Hi Brian,
>
>
>
> > (dual posted to sage and cython)
> >
> > A few of us (ipython and mpi4py devs) are wondering what
> > Lisandro Dalcin (author of mpi4py) came up with the following trick
> > that, while more complicated, prevents memory leaks:
> >
> > cdef extern from "Python.h":
> > object PyString_FromStringAndSize(char*,Py_ssize_t)
> > char* PyString_AS_STRING(object)
> >
> > cdef inline
Hi,
(dual posted to sage and cython)
A few of us (ipython and mpi4py devs) are wondering what the
best/safest way of allocating dynamic memory in a local scope
(method/function) is when using cython. An example would be if you
need an array of c ints that is locally scoped.
The big question is
> I think Tom just meant the above as a hint to answer the question
> "where would we begin looking to see if this algorithm is known already?"
> Sloane's tables of integer sequences:
> http://www.research.att.com/~njas/sequences/
> contain a _lot_ of references to the literature and research.
> > Question: where would we begin looking to see if this algorithm is
> > known already?
>
>
> Let a(m,n) be the number of multiplicative partitions of integers into m
> parts.
>
> For m fixed, compute a(m,n) for n = 3,4,5... and search for this sequence in
> Sloane's encyclopedia.
>
> And, le
your thoughts on this one.
Here is the code (BSD licensed, authors, Brian Granger and Dan Karipedes):
def divisors_minmax(n, dmin, dmax):
"""Find the divisors of n in the interval (dmin,dmax]."""
i = dmin+1
while i<=dmax:
if n % i == 0:
Here is a brute force version. I simply compute the divisors and then
try multiplying size of them together. If the result is the original
number, I keep it. For the small values of n and size that I deal
with this is fast enough, but it would be nice to have something that
scales well (algorit
oach also eliminates duplicates entries where the factors
> >>> are swapped.
> >>>
> >>> Hope that helps.
> >>>
> >>>
> >> Sorry, I missed the post where you clarified that you weren't just
> >> looking for factor pairs. There&
> Quick important question: How big is the positive integer n?
> I.e., is factoring integers an important difficulty?
In what I am doing n is the number of processors an array is
distributed over. Thus, n scales with the number of dollars a user
has spend on their cluster :) This will tend to k
nd yes, it does sound like this ends up being a factor tree or sorts.
But not exactly, I just sketched the tree and it is more like the set
of all possible factor trees.
Brian
> -Jake
>
> > -Jake
> >
> >> On 23/01/2008, Brian Granger <[EMAIL PROTECTED]> wrote:
> >&g
e your example) can compute things
for size=2. I am trying to figure out how to generalize to arbitrary
size.
Brian
> where of course you could eliminate the cases d=1, d=n and so on.
>
> John
>
>
> On 23/01/2008, Brian Granger <[EMAIL PROTECTED]> wrote:
> >
>
Hi,
I am working on a parallel/distributed array library for
python/ipython. For this library I need to be able to compute the
multiplicative partitions of positive integers:
12 => (2,6), (3,4)
A few questions about this:
1) Is there a good algorithm for computing these. I can think of
silly
> I got swamped by teaching, SAGE Days 4, SIMUW, and... buying a house
> this week (!), so I haven't been able to move anything forward.
> Fortunately, I have no formal responsibilities for the next two
> months, so a lot is likely to happen in the near future.
Nice!
> My plan is to start workin
Hi,
I now have someone here at my company that is going to help maintain
spkgs. We have a number of spkgs that i) SAGE currently doesn't have
and ii) SAGE does have but we have updated or added bug fixes. A
while back there was agreement on a new standard format for what the
structure of an spk
This is a great summary of all spkg things! This should definitely be
put into the SAGE docs somewhere.
Brian
On 6/22/07, didier deshommes <[EMAIL PROTECTED]> wrote:
>
> [Apologies, I hit "Send" too soon]
>
> I'm not sure how to write this since it seems to be so "easy" to me.
> I'll start from
Thanks, this does clarify what goes on in an update.
> The sage-update script gives an idea of how sage is upgraded from a
> SAGE_SERVER:
> - download the new install script
> - download the new list file. The list file contains all spkgs with
> their version numbers. It is from it that sage kno
> On 6/18/07, Brian Granger <[EMAIL PROTECTED]> wrote:
> > I didn't know SAGE was actually using them. Is this when sage -update
> > is run? My understanding is that the decision to upgrade something
> > was based on the timestamps if the files compared wi
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