Minor comment: I would change the aspect ratio on your random matrix
example so that its clearer that the eigenvalues are in a near-circle.
-Marshall
On Feb 11, 8:46 am, William Stein wrote:
> Hi Sage-Devel,
>
> On Thursday I will give a talk to the "Virtual Sun User's Group",
> which is basica
Dear sage developers,
some people, including myself, believe that Sage should contain more
tools for topology. E.g., there was a thread
http://groups.google.com/group/sage-devel/browse_thread/thread/5bd11c7e9fe08e4c/6ba64c41dd86770e?lnk=gst&q=simplicial+complexes#6ba64c41dd86770e
about simplicial
On Feb 10, 4:48 pm, mabshoff wrote:
>
> Keep me in the loop about any other problems you see. If the gnutls
> problem is the only one preventing us from building on RHEL 4.7 this
> should be trivial to fix to add official support for RHEL 4.
Got past atlas -- fails for singular. Gzipped inst
>> Yes, I didn't realise it is that trivial. Thanks for the help, I'll
>> report back when we get this working.
>
> If you have trouble trying to make the above changes -- which is
> entirely possible -- please complain.
I am not there yet, but I created this howto:
http://wiki.sagemath.org/Sage
On Wed, Feb 11, 2009 at 7:54 AM, Ondrej Certik wrote:
>
>>> Yes, I didn't realise it is that trivial. Thanks for the help, I'll
>>> report back when we get this working.
>>
>> If you have trouble trying to make the above changes -- which is
>> entirely possible -- please complain.
>
> I am not th
On Wed, Feb 11, 2009 at 9:15 AM, William Stein wrote:
>
> On Wed, Feb 11, 2009 at 7:54 AM, Ondrej Certik wrote:
>>
Yes, I didn't realise it is that trivial. Thanks for the help, I'll
report back when we get this working.
>>>
>>> If you have trouble trying to make the above changes -- w
On Tue, Feb 10, 2009 at 11:50 PM, Simon King
wrote:
>
> Dear William,
>
> slightly OT:
>
> On Feb 10, 4:25 pm, William Stein wrote:
> ...
>> On Tue, Feb 10, 2009 at 7:18 AM, Simon King
>> wrote:
>> > It concerns multivariate factorization. I had p.factor() in my code,
>> > but at some point I
On Wed, Feb 11, 2009 at 6:52 AM, Simon King wrote:
>
> Dear sage developers,
>
> some people, including myself, believe that Sage should contain more
> tools for topology. E.g., there was a thread
> http://groups.google.com/group/sage-devel/browse_thread/thread/5bd11c7e9fe08e4c/6ba64c41dd86770e?l
On Feb 11, 9:45 am, William Stein wrote:
> On Wed, Feb 11, 2009 at 6:52 AM, Simon King
> wrote:
Hi,
> > Dear sage developers,
>
> > some people, including myself, believe that Sage should contain more
> > tools for topology. E.g., there was a thread
> >http://groups.google.com/group/sage-de
On Feb 11, 9:22 am, Ondrej Certik wrote:
> On Wed, Feb 11, 2009 at 9:15 AM, William Stein wrote:
> > That is not how the notebook works. By default the notebook
> > listens *only* on localhost, which means nobody else. This is a very
> > important security feature. If you want the note
On Wed, Feb 11, 2009 at 12:13 AM, mhampton wrote:
>
> Minor comment: I would change the aspect ratio on your random matrix
> example so that its clearer that the eigenvalues are in a near-circle.
>
> -Marshall
[et al. ]
Thanks everybody for the feedback. I've updated the slides
accordingly
On Wed, Feb 11, 2009 at 9:36 AM, mabshoff wrote:
>
>
>
> On Feb 11, 9:22 am, Ondrej Certik wrote:
>> On Wed, Feb 11, 2009 at 9:15 AM, William Stein wrote:
>
>
>
>> > That is not how the notebook works.By default the notebook
>> > listens *only* on localhost, which means nobody else. This
There are of course several trac tickets related to this, so this is
not a bug report (for Sage or for Maxima), but I had to laugh when
this came up today in preparing for class - enjoy!
TypeError: Computation failed since Maxima requested additional
constraints (try the command 'assume(sin(t)^2+
> > 2. SnapPea
> > SnapPea is a program for creating and studying hyperbolic 3-manifolds
> > (http://www.geometrygames.org/SnapPea-old/index.html). It seems to be
> > widely used by computational topologists. AFAIK it can deal with ideal
> > triangulations, compute volume, has a census of hyperbo
On Feb 11, 12:56 pm, mabshoff wrote:
> On Feb 11, 7:40 am, gedaliah wrote:
>
> > On Feb 10, 4:48 pm, mabshoff wrote:
> >
>
> Hi,
>
> > > Keep me in the loop about any other problems you see. If the gnutls
> > > problem is the only one preventing us from building on RHEL 4.7 this
> > > should
On Wed, Feb 11, 2009 at 12:45 PM, William Stein wrote:
>
...
> I very much hope Algebraic Topology will be a theme at Sage Days 15:
>
> http://wiki.sagemath.org/days15
>
1) Thanks very much for making SD15 on those dates!
2) I wonder if imaging/graphics could also be a theme?
That would be c
On Feb 11, 7:40 am, gedaliah wrote:
> On Feb 10, 4:48 pm, mabshoff wrote:
>
Hi,
> > Keep me in the loop about any other problems you see. If the gnutls
> > problem is the only one preventing us from building on RHEL 4.7 this
> > should be trivial to fix to add official support for RHEL 4.
>
I wish to announce the release of pycppad
http://www.seanet.com/~bradbell/pycppad/index.xml
Features
Operator overloading is used to store the operation sequence
corresponding to a python algorithm. The operation sequence can be
evaluated to obtain new function values or derivatives of a
> I very much hope Algebraic Topology will be a theme at Sage Days 15:
>
> http://wiki.sagemath.org/days15
I would like to work on Algebraic Topology at SD15. I'm talking to some
topologists here at Harvard next week to see what they would like to see in
Sage.
David
--~--~-~--~~
On Wed, Feb 11, 2009 at 10:18 AM, Ondrej Certik wrote:
>
> On Wed, Feb 11, 2009 at 9:36 AM, mabshoff wrote:
>>
>>
>>
>> On Feb 11, 9:22 am, Ondrej Certik wrote:
>>> On Wed, Feb 11, 2009 at 9:15 AM, William Stein wrote:
>>
>>
>>
>>> > That is not how the notebook works.By default the noteb
On Wed, Feb 11, 2009 at 10:05 AM, gedaliah wrote:
> I can try to build it locally on the machine but ultimately, sage will
> need to live in AFS land. I understand there are problems moving it.
There have been (and probably still are) problems with moving Sage,
but if you find any, please report
On Feb 11, 10:20 am, Nathan Dunfield wrote:
Hi,
> > > 2. SnapPea
> > > SnapPea is a program for creating and studying hyperbolic 3-manifolds
> > > (http://www.geometrygames.org/SnapPea-old/index.html). It seems to be
> > > widely used by computational topologists. AFAIK it can deal with idea
On Feb 11, 9:45 am, kcrisman wrote:
Hi,
> There are of course several trac tickets related to this, so this is
> not a bug report (for Sage or for Maxima), but I had to laugh when
> this came up today in preparing for class - enjoy!
Well, it would be truly funny if we didn't use Maxima for s
On Feb 11, 10:48 am, Carl Witty wrote:
> On Wed, Feb 11, 2009 at 10:05 AM, gedaliah wrote:
> > I can try to build it locally on the machine but ultimately, sage will
> > need to live in AFS land. I understand there are problems moving it.
>
> There have been (and probably still are) problems w
I am defintely hoping to make it to SD15, I think those dates work for
me. Not counting the joint meetings, which is more about PR, I have
never been to a Sage Days so I am really looking forward to it.
I have some interest in adding support for some topology-related
things for dynamical systems
Hello folks,
here is rc0, a day or so late. The tarball and its friends have been
relaxing for the last 12 hours in the usual place since I build tested
it once to make 100% there were no new build failures before
announcing and then fell asleep, so if you didn't watch IRC you lost
out to be the
> Having glanced at the other projects this one seems to be the most
> promising, but it certainly seems rather strange regarding build
> system and so on. I.e. I did not see any obvious way to build the
> kernel as a library for example. There is no meaningful documentation,
> but a longer worded
On Feb 11, 12:05 pm, Nathan Dunfield wrote:
> Michael,
Hi Nathan,
> It sounds like you're using the version from GeometryGames.org:
>
> http://www.geometrygames.org/SnapPea-old/SnapPea3.html
Yes, that is the URL given by Simon and I did not read your email
after I had send mine since I ha
All tests passed on a intel mac pro, running 10.4.11.
-M. Hampton
On Feb 11, 10:07 pm, mabshoff wrote:
> Hello folks,
>
> here is rc0, a day or so late. The tarball and its friends have been
> relaxing for the last 12 hours in the usual place since I build tested
> it once to make 100% there we
On Feb 11, 12:40 pm, mhampton wrote:
> All tests passed on a intel mac pro, running 10.4.11.
Good.
> -M. Hampton
> > At least two people did
> > an upgrade and did not report any test failures, so things are looking
> > pretty good. :)
Oh well, it didn't take long, but we do have a load(d
mabshoff wrote:
> Hello folks,
>
> here is rc0, a day or so late. The tarball and its friends have been
> relaxing for the last 12 hours in the usual place since I build tested
> it once to make 100% there were no new build failures before
> announcing and then fell asleep, so if you didn't watch
On Feb 11, 1:54 pm, mabshoff wrote:
>
> Yes, afs is a strange filessystem and might be the root cause of your
> trouble, but that is far from certain at this point.
No longer far from certain. The build completed without ANY problems,
including getting past gnutls without error. This is not u
Python pretty much punted on date and time. It has some support, but
its not very good.
The Python Quick Reference: http://rgruet.free.fr/PQR25/PQR2.5.html
suggests mxDateTime: http://www.egenix.com/products/python/mxBase/mxDateTime/
and, having worked with it, I recommend it over what comes n
On Feb 11, 1:03 pm, gedaliah wrote:
> On Feb 11, 1:54 pm, mabshoff wrote:
Hi Gedaliah,
> > Yes, afs is a strange filessystem and might be the root cause of your
> > trouble, but that is far from certain at this point.
>
> No longer far from certain. The build completed without ANY problems,
On Feb 11, 1:23 pm, ghtdak wrote:
Hi Glenn,
> Python pretty much punted on date and time. It has some support, but
> its not very good.
>
> The Python Quick Reference:http://rgruet.free.fr/PQR25/PQR2.5.html
>
> suggests mxDateTime:http://www.egenix.com/products/python/mxBase/mxDateTime/
Cou
Hi Michael,
> #5142: John Palmieri: speed up elementary_divisors for sparse integer
> matrices [Reviewed by Alex Ghitza]
It looks like you used the wrong patch for this: please use "5142-
new.patch" from the ticket. (The difference is in the documentation.)
John
--~--~-~--~~
Hi Simon,
On Feb 11, 6:52 am, Simon King wrote:
> Dear sage developers,
>
> some people, including myself, believe that Sage should contain more
> tools for topology. E.g., there was a
> threadhttp://groups.google.com/group/sage-devel/browse_thread/thread/5bd11c...
> about simplicial complexes
> Another direction: compute Ext groups over connected algebras,
> especially Ext over the Steenrod algebra, since this is the E_2-term
> of the Adams spectral sequence. Bob Bruner has C code which does
> this, and he is very interested in porting it to Sage or writing an
> interface between it an
On Feb 11, 1:59 pm, John H Palmieri wrote:
> Hi Michael,
Hi John,
> > #5142: John Palmieri: speed up elementary_divisors for sparse integer
> > matrices [Reviewed by Alex Ghitza]
>
> It looks like you used the wrong patch for this: please use "5142-
> new.patch" from the ticket. (The differe
On Feb 11, 4:24 pm, mabshoff wrote:
>
> Anyway, once the test pass run
Oops, book_stein_ent.py test failed, not sure if this is a problem or
not --
Trying:
qsieve(n)###line 289:_sage_: qsieve(n)
Expecting:
([6340271405786663791648052309,
46102313108592180286398757159], ''
Dear All,
The patch is close to be ready to submission. However I'm not sure if the
two last answer was from this mail or another one.
> As you suggested in your previous e-mail, there is a last chance that can save
> us: what about creating a new exception say MatrixFormatErro
On Feb 11, 2:37 pm, gedaliah wrote:
> On Feb 11, 4:24 pm, mabshoff wrote:
>
>
>
> > Anyway, once the test pass run
>
> Oops, book_stein_ent.py test failed, not sure if this is a problem or
> not --
>
> Trying:
> qsieve(n)###line 289:_sage_ : qsieve(n)
> Expecting:
> ([63402714057866
On Wed, Feb 11, 2009 at 1:23 PM, ghtdak wrote:
>
> Python pretty much punted on date and time. It has some support, but
> its not very good.
>
> The Python Quick Reference: http://rgruet.free.fr/PQR25/PQR2.5.html
>
> suggests mxDateTime: http://www.egenix.com/products/python/mxBase/mxDateTime/
>
On Feb 11, 2:59 pm, mabshoff wrote:
> On Feb 11, 2:37 pm, gedaliah wrote:
> > Oops, book_stein_ent.py test failed, not sure if this is a problem or
> > not --
>
> > Trying:
> > qsieve(n)###line 289:_sage_ : qsieve(n)
> > Expecting:
> > ([6340271405786663791648052309,
> > 46
Hi Glenn,
thanks for looking into this.
At first glance, it looks like it basically allows date arithmetic.
I was planning to incorporate Gustavo Niemeyer's relativedelta.py for this
purpose.
My date library adds business-day / holiday calculations.
Does anyone have a strong preference between re
On Feb 11, 3:40 pm, Phaedon Sinis wrote:
> Hi Glenn,
>
> thanks for looking into this.
> At first glance, it looks like it basically allows date arithmetic.
> I was planning to incorporate Gustavo Niemeyer's relativedelta.py for this
> purpose.
> My date library adds business-day / holiday calc
On a Macbook with 10.5.6 I get the following doctest failure in
plot.py: (small enough to include in email)
sage -t "devel/sage/sage/plot/plot.py"
**
File "/Users/ayeq/sage-3.3.alpha5/devel/sage/sage/plot/plot.py", line
2582
On Wed, 11 Feb 2009 at 12:07PM -0800, mabshoff wrote:
> here is rc0, a day or so late. The tarball and its friends have been
> relaxing for the last 12 hours in the usual place since I build tested
> it once to make 100% there were no new build failures before
> announcing and then fell asleep, so
On Feb 11, 3:54 pm, Dan Drake wrote:
Hi Dan,
> I'm one of the people who did an upgrade, and have now run "make test",
> "make ptest", and "make ptestlong" with no persistent failures.
Thanks, but why run all three? "make ptestlong" is all you need since
it does everything and more than th
On Feb 11, 3:53 pm, "David M. Monarres" wrote:
Hi David,
> On a Macbook with 10.5.6 I get the following doctest failure in
> plot.py: (small enough to include in email)
This is now http://trac.sagemath.org/sage_trac/ticket/5239 and I
should have a patch in a short while.
There is a posi
Dear All,
I've a trouble with symbolic ring:
sage: bla = SR(1)
sage: bla.is_unit()
True
sage: bla = SR(0)
sage: bla.is_unit()
---
NotImplementedError Traceback (most recent call last)
A a resu
>> Btw, I am behind a university firewall that doesn't allow me to use
>> IRC. Does anyone remember the iptables or route rules to forward the
>> IRC connection through my server? I know I can setup ssh port
>> forwarding, but then I would have to log to localhost and fiddle with
>> the IRC client
> Questions? Comments? Jokes?
sage: current_time()
Time to buy a watch!
--~--~-~--~~~---~--~~
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On Wed, 11 Feb 2009 at 04:07PM -0800, mabshoff wrote:
> On Feb 11, 3:54 pm, Dan Drake wrote:
> > I'm one of the people who did an upgrade, and have now run "make
> > test", "make ptest", and "make ptestlong" with no persistent
> > failures.
>
> Thanks, but why run all three? "make ptestlong" is a
On Feb 11, 2009, at 2:58 PM, Florent Hivert wrote:
> Dear All,
>
>The patch is close to be ready to submission. However I'm not
> sure if the
> two last answer was from this mail or another one.
>
>> As you suggested in your previous e-mail, there is a last chance
>> that can save
>
> Indeed, it was a oneliner:
>
> diff -r b0aa7ef45b3c sage/server/notebook/user_conf.py
> --- a/sage/server/notebook/user_conf.py Mon Jan 05 23:03:45 2009 -0800
> +++ b/sage/server/notebook/user_conf.py Wed Feb 11 08:58:59 2009 -0800
> @@ -4,7 +4,7 @@
> import conf
>
> defaults = {'max
On Wed, 11 Feb 2009 at 07:54AM -0800, Ondrej Certik wrote:
> I am not there yet, but I created this howto:
>
> http://wiki.sagemath.org/SageVirtualBox
I mentioned this on IRC, but so that anyone who is looking through list
archives knows, I wrote a similar guide:
http://wiki.sagemath.org/DanDrak
I don't understand this.
What command was sent to Maxima?
What bug are you referring to?
Perhaps that Maxima does not have an algorithm that you think it
should have?
Are you aware of the results of Daniel Richardson on the recursive
undecidability of
(rather simple) identities? He proved that i
> Are you aware of the results of Daniel Richardson on the recursive
> undecidability of
> (rather simple) identities? He proved that in general there is no
> algorithm possible.
Yeah, and the halting problem is undecidable too, but you would still call the
following program "stupid":
while 1:
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