On 24 lis, 07:25, Martin Rubey
wrote:
> "Dr. David Kirkby" writes:
>
> > I find it hard to believe Sage will not have a negative impact on the
> > sales of Mathematica, but I certainly hope Sage does not put Wolfram
> > Research out of business. I very much doubt it will either.
>
> I am with you
On Monday 23 November 2009, Harald Schilly wrote:
> By City:
> 1. London 1,6351.83% <===
> 2. Paris 1,165 1.30%
> 3. Madrid 997 1.11%
> 4. Seattle 946 1.06%
David Kirkby and I surf to sagemath.org a lot it seems :) With so many visits
I wonde
On Nov 24, 7:25 am, Martin Rubey
wrote:
> I am with your hope (how to say this properly?). At any rate, I think
> its realistic though that sage will put
>
> maxima, fricas (axiom, open-axiom), reduce, giac, etc.
>
> eventually "out of business".
I see this totally different: Sage or any oth
Hi There,
On Mon, Nov 23, 2009 at 03:41:46PM -0600, Jason Grout wrote:
> mark mcclure wrote:
> > On Nov 23, 3:30 pm, William Stein wrote:
> >> That is true. In fact, I hope in the proposal to not insult or snub
> >> non-free commercial software either.
> >
> > But William, just two days a
I was looking for a way to maximize a function subject to constraints
but didn't find any, so I wrote it myself (based on an example on
http://www.sagenb.org/home/pub/353/):
def lagrange_multipliers(f, g, varx):
n = len(g)
lmb = [var("lambda_%d" % i) for i in range(n)]
L =
On Nov 23, 11:01 pm, mhampton wrote:
> I thought that Mark McClure's post on another thread raised some
> interesting issues, and that it was worth responding to, but it was so
> tangential that it deserves a seperate thread:
Thank you to Marshall for a thoughtful response. I agree with just
abo
On Nov 24, 7:20 am, William Stein wrote:
> It's shared between many countries,
> including France, Germany, Austria, India, Canada, etc.,
Since I do statistics, I want to add that since this fall Sage is by
far no longer an us-only project. There is more activity from europe
than from north ameri
Martin Albrecht wrote:
> On Monday 23 November 2009, Harald Schilly wrote:
>> By City:
>> 1. London 1,6351.83% <===
>> 2. Paris 1,165 1.30%
>> 3. Madrid 997 1.11%
>> 4. Seattle 946 1.06%
>
> David Kirkby and I surf to sagemath.org a lot it see
On Nov 24, 2:30 pm, cousteau wrote:
> I was looking for a way to maximize a function subject to constraints
> but didn't find any,
you can minimize the negative of the objective.
http://sagemath.org/doc/reference/sage/numerical/optimize.html?highlight=minimize#sage.numerical.optimize.minimize_c
> I do not think so. There are really big names (RJF, Robert Dodier and
> others) behind Maxima. As I understand from curricula vitae of some
> Sage develepers (E. Burcin, O. Certik, W. Stein, M. Hampton, K. D.
> Crisman, ..), the typical Sage developer is very young. Sage is
> wonderful project,
On Tue, Nov 24, 2009 at 1:15 AM, Florent Hivert
wrote:
> Hi There,
>
> On Mon, Nov 23, 2009 at 03:41:46PM -0600, Jason Grout wrote:
>> mark mcclure wrote:
>> > On Nov 23, 3:30 pm, William Stein wrote:
>> >> That is true. In fact, I hope in the proposal to not insult or snub
>> >> non-free c
Florent Hivert wrote:
> I'm not sure anyone in this sharks market will care a cent about putting sage
> down...
I suspect some of the employees at Mathworks probably welcome Sage, though they
would not say so officially.
> Now, though I completely agree with sage goal, I don't feel very
> comfo
William Stein wrote:
> It's an honest "attack", and that's exactly what I would expect from
> the people working at the Ma's. Perhaps, I'm young and naive, but I
> think they are by and large good and honest people. I think this
> sort of competition is an overall plus for end users, in the l
On Nov 24, 2:56 pm, "Dr. David Kirkby"
wrote:
> mailing lists... I do not browse the Sage web site that much. I use wget...
Then you don't count, even not for the downloads :)
It's more interesting to see those numbers relative to each other and
to compare them with the past. A user group meeting
On Tue, Nov 24, 2009 at 6:55 AM, Dr. David Kirkby
wrote:
> Florent Hivert wrote:
>
>> I'm not sure anyone in this sharks market will care a cent about putting sage
>> down...
>
> I suspect some of the employees at Mathworks probably welcome Sage, though
> they
> would not say so officially.
>
>>
Hello,
I'm new in Sage and I'm working on an implementation for the
error-correcting Golay codes (the decoder mainly).
The question is that I've got some doubts about how to edit de source
code. I have read that I must do a new branch for "my version", edit
files there and build with the changes.
Hi,
I've done a rather drastic change to http://sagenb.org, which could
reduce in loss of data to users during the last 16 hours. However,
right now http://sagenb.org should be faster and more robust than the
sorry state it was in before (feedback welcome).
Don't worry, the lost data mentioned a
On Sun, Nov 22, 2009 at 08:59:17PM +0100, Florent hivert wrote:
> My (obvious) suggestion is to add at the end of a function doc (close to
> reference) a section e.g.:
>
> ALGORITHM:
>
> - modified merge sort algorithm. The complexity ``O(n * ln(n))`` is
> optimal however it has a ba
On Tue, Nov 24, 2009 at 11:07 PM, Gerard Bosch wrote:
> Hello,
>
> I'm new in Sage and I'm working on an implementation for the
> error-correcting Golay codes (the decoder mainly).
>
> The question is that I've got some doubts about how to edit de source
> code. I have read that I must do a new br
On Tue, Nov 24, 2009 at 4:07 PM, Gerard Bosch wrote:
> I'd like to know the correct way and the steps to follow in order to
> make a code patch then.
You will want to use a Mercurial queue. Step by step instructions are here:
http://wiki.sagemath.org/MercurialQueues
If something isn't clear the
On Nov 24, 6:54 am, William Stein wrote:
> On Tue, Nov 24, 2009 at 1:15 AM, Florent Hivert
>
>
>
>
> How do you imagine that one of those sharks could "put Sage down"?
they don't have to. they just ignore it.
> I'm genuinely curious, because I don't see how *they* can. The
> obvious attacks
On Nov 24, 1:25 am, Martin Rubey
wrote:
> "Dr. David Kirkby" writes:
>
> > I find it hard to believe Sage will not have a negative impact on the
> > sales of Mathematica, but I certainly hope Sage does not put Wolfram
> > Research out of business. I very much doubt it will either.
>
> I am with y
Hi,
Now that sagenb.org can suddenly handle more of a load, it's
interesting to watch the usage.
This command gives the number of *active* users (since processes
timeout very quickly):
os.system('ps -u sagenbws|grep python|wc -l')
There are 31 active simultaneous users right now as I write t
On Nov 24, 6:55 am, "Dr. David Kirkby"
wrote:
.
>
> What is so wrong about competition? In the UK, we have a 'competition
> commission'
>
> http://www.competition-commission.org.uk/
Since Sage is given away, Sage makes no money when more people use
it. I think the analogy with
Boeing and
Oh great, another prime counting function, and you think that WRI will
be compelled to respond because Sage has some undergraduate project on
the topic.
Sure.
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Just out of curiosity, what was the change - one which will propagate
to all servers eventually (if they upgrade), making it even easier to
serve courses with them? Just wondering.
- kcrisman
On Nov 24, 10:51 am, William Stein wrote:
> Hi,
>
> I've done a rather drastic change tohttp://sagenb.o
rjf wrote:
>
> On Nov 24, 6:54 am, William Stein wrote:
>> On Tue, Nov 24, 2009 at 1:15 AM, Florent Hivert
>>
>>
>>
>>
>> How do you imagine that one of those sharks could "put Sage down"?
>
> they don't have to. they just ignore it.
That's why searches on 'sage math' in Google bring up sponso
On Tue, Nov 24, 2009 at 8:49 AM, rjf wrote:
[...]
Many thanks for your comments.However, I'm concerned that your
level of rudeness is not appropriate
for this list.
-- William
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On Nov 24, 6:05 pm, "Dr. David Kirkby"
wrote:
> That's why searches on 'sage math' in Google bring up sponsored advertisements
> paid for by Wolfram Research. Perhaps I am thick, but that suggests to me
> Wolfram Research are not ignoring Sage.
I don't know how they have tuned their campaign, bu
Harald Schilly wrote:
> On Nov 24, 6:05 pm, "Dr. David Kirkby"
> wrote:
>> That's why searches on 'sage math' in Google bring up sponsored
>> advertisements
>> paid for by Wolfram Research. Perhaps I am thick, but that suggests to me
>> Wolfram Research are not ignoring Sage.
>
> I don't know h
On Tue, Nov 24, 2009 at 9:39 AM, Dr. David Kirkby
wrote:
> Harald Schilly wrote:
>> On Nov 24, 6:05 pm, "Dr. David Kirkby"
>> wrote:
>>> That's why searches on 'sage math' in Google bring up sponsored
>>> advertisements
>>> paid for by Wolfram Research. Perhaps I am thick, but that suggests to
John, Robert, George,
Is your version of sage an upgrade from a previous version
of sage? Rather than do that, I am building sage from source,
specifically the sage-4.2.1.tar source. And sage from
source does NOT have the patch. Specifically,
sage-sage from source has lines 369-416:
if [ $1 =
Hi,
I've made some changes to http://sagenb.org as I mentioned before, and
it is indeed for faster. Stress test it! In case you stopped using
http://sagenb.org because it seemed to slow, give it a shot. I'm
curious what it takes before it slows down substantially.
Harald and I are logging numb
On Tue, Nov 24, 2009 at 11:16 AM, Mariah wrote:
> John, Robert, George,
>
> Is your version of sage an upgrade from a previous version
> of sage? Rather than do that, I am building sage from source,
> specifically the sage-4.2.1.tar source. And sage from
> source does NOT have the patch. Specif
On Nov 24, 11:16 am, Mariah wrote:
> John, Robert, George,
>
> Is your version of sage an upgrade from a previous version
> of sage?
No, I looked at the 4.2.1 and 4.3.alpha0 source, in particular the
file SAGE_ROOT/spkg/standard/sage_scripts-4.3.alpha0.spkg: apply "tar
jxf" to this and look at
William,
> Yes it does. The patch is here:
>
> http://trac.sagemath.org/sage_trac/attachment/ticket/4644/trac_4644.p...
>
> I'm reading it, and it is applied. Maybe the patch posted to ticket
> 4644 is wrong?
You are correct, the patch is applied ... but it is not working for
me, but
workin
David Kirby's comments on competition stuck in my mind as I was doing
some errands this morning, and his repeating them suggested to me that
maybe I should comment again.
For a start, the healthy competition he refers to between Intel and
AMD. Perhaps he has not noticed the substantial amount of m
I do not have any special knowledge about why sage math leads to a
wolfram ad, but
perhaps Google has noticed that the pages that are about sage often
mention Mathematica.
Rather prominently, too.
The pages about foo don't mention Mathematica much.
Therefore sage math is in closer proximity to
On Tue, Nov 24, 2009 at 12:10 PM, rjf wrote:
> While I am not opposed to competition per se, I am quite doubtful of
> some of the competition proposed here.
> For example, claiming great advantages to rewriting working software
> in the language du jour (currently, Python).
FUD. Sage does *vastly
On Nov 24, 2009, at 12:10 PM, rjf wrote:
> David Kirby's comments on competition stuck in my mind as I was doing
> some errands this morning, and his repeating them suggested to me that
> maybe I should comment again.
>
> For a start, the healthy competition he refers to between Intel and
> AMD. P
Hi William,
> > In the operation, several friend there lost their job (actually this in not
> > Mathworks fault and probably the result of Sciface being bought by
> > Mathworks is
> > that some of them keep their job)...
> >
> > I'm not sure anyone in this sharks market will care a cent abo
On Nov 24, 12:37 pm, William Stein wrote:
> >(RJF) Thus someone doing signal processing calculations will likely choose
> > the system with the best signal processing library.
>
> >(RJF) Is that Sage?
>
>(WS) Is that Maxima?
Unlikely.
Matlab has a popular signal processing library.
http://ww
I don't think there is really a question that Matlab is the leader for
signal processing. Sage does include some functionality for it
through scipy's signal module:
http://docs.scipy.org/doc/scipy/reference/signal.html
which has been all I have needed (but I don't do much signal
processing).
-M
On Nov 24, 12:37 pm, William Stein wrote:
> > (RJF) For example, claiming great advantages to rewriting working software
> > in the language du jour (currently, Python).
>
> FUD. Sage does *vastly* more than "rewrite working software".
I did not say that was the only thing that Sage does. And
On Nov 24, 1:07 pm, Robert Bradshaw
wrote:
> On Nov 24, 2009, at 12:10 PM, rjf wrote:
>
>
>
> No one is claiming that there aren't (gross) inefficiencies in the
> system, but I am one of many who subscribe to the belief that most of
> the time completion provides better results than the lack
Hello everybody !
I think I wrote the first version of the two tickets #6679 and #6680
something like 6 months ago. The first versions had different trac
tickets.
Since, they have been updated something like 5 or 6 times, because the
MixedLinearIntergerProgram class had to be updated, and these p
On 24 nov, 15:16, Harald Schilly wrote:
> you can minimize the negative of the objective.
The problems with minimize_constrained() are:
1) it finds a numerical result (a real number with limited precision)
2) its constraints are inequalities, like x^2+y^2-3 >= 0 (although an
equality can be expre
Hi folks,
Ticket #7190 (French translation: A Tour of Sage) [1] is merged in
Sage 4.3.alpha0. One of its patches, namely
trac_7190_add_images.patch, inserts two images into
devel/sage-main/doc/fr/a_tour_of_sage. However, the file
devel/sage-main/MANIFEST.in has not been changed to take into accoun
Hi,
Here are some slides from a talk Clement Pernet (Sage postdoc last
year, Linbox developer) recently gave in France, which mentions Sage
in a few places, and exactly linear algebra in many places:
http://membres-liglab.imag.fr/pernet/Publications/Dagstuhl09_pernet.pdf
-- Forwarded me
On Wed, Nov 25, 2009 at 4:37 PM, William Stein wrote:
> Hi,
>
> Here are some slides from a talk Clement Pernet
I have added Clement's talk to the Sage wiki [1] page that lists talks
about Sage.
[1] http://wiki.sagemath.org/Talks
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Regards
Minh Van Nguyen
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