[sage-devel] Sage notebook and safari

2008-04-17 Thread Justin C. Walker

Hi, all,

This is to complete an earlier discussion.  I filed a bug with Apple  
regarding the failure of tab-completion with Safari 3.1.  I think Tom  
has figured a way of dealing with this, but here is Apple's reply:

We no longer send keypress for tab keys.  That's likely the cause of  
this issue.  Whatever you are doing in their[sic] keypress handler to  
do text completion should be done in the keydown handler.  Please try  
that and let us know if that resolves the issue.

Justin

--
Justin C. Walker, Curmudgeon-At-Large
Institute for the Enhancement of the Director's Income

When LuteFisk is outlawed,
Only outlaws will have LuteFisk





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[sage-devel] Re: Status of Sage 3.0.a5 with gcc 4.3/Arch Linux

2008-04-17 Thread mabshoff

Ok. 3.0.alpha6 with gcc 4.3 is down to the following doctest failure:

sage -t  devel/sage/sage/rings/real_double.pyx
**
File /home/mabshoff/sage-3.0.alpha5/tmp/real_double.py, line 544:
sage: a = -RDF(1)/RDF(0); a.str()
Expected:
'-inf'
Got:
'inf'
**
File /home/mabshoff/sage-3.0.alpha5/tmp/real_double.py, line 979:
sage: a.is_positive_infinity()
Expected:
False
Got:
True
**
File /home/mabshoff/sage-3.0.alpha5/tmp/real_double.py, line 991:
sage: a.is_negative_infinity()
Expected:
True
Got:
False
**

This is caused by GSL relying on the system's isinf() function which
is either buggy or did change behaviours, i.e. isinf(-1/0) is supposed
to be -inf, while on OSX 10.5 with GSL 1.10 that case returns inf.
I did discuss this with Justin Walker at SD7, but then I never
followed up whether this is the correct behavior or not. Interestingly
enough GSL's isinf() function [that is used as a fallback in case the
system doesn't provide it] returns -inf for isinf(-1/0).

The patch is simple enough by fixing GSL.

Thoughts?

Cheers,

Michael
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[sage-devel] Fwd: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread William Stein

Hi,

Is there anybody at UW that is interested in meeting with some OLPC
people?  (I'm cc'ing this to sage-devel, because people there are generally
interested in OLPC.)


-- Forwarded message --
From: Seth Woodworth [EMAIL PROTECTED]
Date: Thu, Apr 17, 2008 at 3:40 PM
Subject: One Laptop Per Child Is very interested in Sage
To: [EMAIL PROTECTED]


Hello,

I'm an intern at OLPC and I'm throwing an event at UW this weekend.
While the event is specifically about healthcare, there will be
several people there that are strongly involved in OLPC.  For some
time SAGE has been kicked around as a back end for a graphic
calculator application on the XO laptop, and there are many developers
that would love to pick your brain on the subject.

Since there will be several OLPC people at the UW this weekend, I was
wondering if you would be interested in meeting up with us and
discussing SAGE.  This invitation of course applies to any of the
other SAGE team members as well.

The XO laptop is a great piece of machinery.

Seth Woodworth, HealthJam Organizer.



-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread alex clemesha

On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] wrote:

  Hi,

  Is there anybody at UW that is interested in meeting with some OLPC
  people?  (I'm cc'ing this to sage-devel, because people there are generally
  interested in OLPC.)

I'm not in Seattle, so I can't meet with the OLPC people,
but a very enthusiastic +1 on this effort.  Sounds awesome.

-Alex




  -- Forwarded message --
  From: Seth Woodworth [EMAIL PROTECTED]
  Date: Thu, Apr 17, 2008 at 3:40 PM
  Subject: One Laptop Per Child Is very interested in Sage
  To: [EMAIL PROTECTED]


  Hello,

  I'm an intern at OLPC and I'm throwing an event at UW this weekend.
  While the event is specifically about healthcare, there will be
  several people there that are strongly involved in OLPC.  For some
  time SAGE has been kicked around as a back end for a graphic
  calculator application on the XO laptop, and there are many developers
  that would love to pick your brain on the subject.

  Since there will be several OLPC people at the UW this weekend, I was
  wondering if you would be interested in meeting up with us and
  discussing SAGE.  This invitation of course applies to any of the
  other SAGE team members as well.

  The XO laptop is a great piece of machinery.

  Seth Woodworth, HealthJam Organizer.



  --
  William Stein
  Associate Professor of Mathematics
  University of Washington
  http://wstein.org

  


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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread Yi Qiang

Yes, I'm definitely interested. Please forward the meeting details
when you've got them. I think the goals of the OLPC align quite well
with some of the goals of Sage. You should probably also include the
sage-edu folks who are probably going to be even more interested in
this.

On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] wrote:

  Hi,

  Is there anybody at UW that is interested in meeting with some OLPC
  people?  (I'm cc'ing this to sage-devel, because people there are generally
  interested in OLPC.)


  -- Forwarded message --
  From: Seth Woodworth [EMAIL PROTECTED]
  Date: Thu, Apr 17, 2008 at 3:40 PM
  Subject: One Laptop Per Child Is very interested in Sage
  To: [EMAIL PROTECTED]


  Hello,

  I'm an intern at OLPC and I'm throwing an event at UW this weekend.
  While the event is specifically about healthcare, there will be
  several people there that are strongly involved in OLPC.  For some
  time SAGE has been kicked around as a back end for a graphic
  calculator application on the XO laptop, and there are many developers
  that would love to pick your brain on the subject.

  Since there will be several OLPC people at the UW this weekend, I was
  wondering if you would be interested in meeting up with us and
  discussing SAGE.  This invitation of course applies to any of the
  other SAGE team members as well.

  The XO laptop is a great piece of machinery.

  Seth Woodworth, HealthJam Organizer.



  --
  William Stein
  Associate Professor of Mathematics
  University of Washington
  http://wstein.org

  


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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread David Joyner

On Thu, Apr 17, 2008 at 6:56 PM, alex clemesha [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] wrote:
  
Hi,
  
Is there anybody at UW that is interested in meeting with some OLPC
people?  (I'm cc'ing this to sage-devel, because people there are 
 generally
interested in OLPC.)

  I'm not in Seattle, so I can't meet with the OLPC people,
  but a very enthusiastic +1 on this effort.  Sounds awesome.

Ditto. I do own an XO machine so possibly can at least do some testing.


  -Alex




  
  
-- Forwarded message --
From: Seth Woodworth [EMAIL PROTECTED]
Date: Thu, Apr 17, 2008 at 3:40 PM
Subject: One Laptop Per Child Is very interested in Sage
To: [EMAIL PROTECTED]
  
  
Hello,
  
I'm an intern at OLPC and I'm throwing an event at UW this weekend.
While the event is specifically about healthcare, there will be
several people there that are strongly involved in OLPC.  For some
time SAGE has been kicked around as a back end for a graphic
calculator application on the XO laptop, and there are many developers
that would love to pick your brain on the subject.
  
Since there will be several OLPC people at the UW this weekend, I was
wondering if you would be interested in meeting up with us and
discussing SAGE.  This invitation of course applies to any of the
other SAGE team members as well.
  
The XO laptop is a great piece of machinery.
  
Seth Woodworth, HealthJam Organizer.
  
  
  
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
  

  

  


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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread William Stein

On Thu, Apr 17, 2008 at 4:02 PM, David Joyner [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 6:56 PM, alex clemesha [EMAIL PROTECTED] wrote:
  
On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] wrote:

  Hi,

  Is there anybody at UW that is interested in meeting with some OLPC
  people?  (I'm cc'ing this to sage-devel, because people there are 
 generally
  interested in OLPC.)
  
I'm not in Seattle, so I can't meet with the OLPC people,
but a very enthusiastic +1 on this effort.  Sounds awesome.

  Ditto. I do own an XO machine so possibly can at least do some testing.

How did you get that?  I want one.

William

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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread root

  Is there anybody at UW that is interested in meeting with some OLPC
  people?  (I'm cc'ing this to sage-devel, because people there are generally
  interested in OLPC.)

I'm not in Seattle, so I can't meet with the OLPC people,
but a very enthusiastic +1 on this effort.  Sounds awesome.

-Alex




  -- Forwarded message --
  From: Seth Woodworth [EMAIL PROTECTED]
  Date: Thu, Apr 17, 2008 at 3:40 PM
  Subject: One Laptop Per Child Is very interested in Sage
  To: [EMAIL PROTECTED]


  Hello,

  I'm an intern at OLPC and I'm throwing an event at UW this weekend.
  While the event is specifically about healthcare, there will be
  several people there that are strongly involved in OLPC.  For some
  time SAGE has been kicked around as a back end for a graphic
  calculator application on the XO laptop, and there are many developers
  that would love to pick your brain on the subject.

  Since there will be several OLPC people at the UW this weekend, I was
  wondering if you would be interested in meeting up with us and
  discussing SAGE.  This invitation of course applies to any of the
  other SAGE team members as well.

  The XO laptop is a great piece of machinery.

  Seth Woodworth, HealthJam Organizer.


I'm actively working with Luanne Burns on a version of her PhD thesis
http://digitalcommons.libraries.columbia.edu/dissertations/AAI9333735/
called MEADOW: An integrated system for intelligent tutoring of subtraction
concepts and procedures.

Basically what happens is that the student does subtraction homework
problems and this software monitors the students actions (using a
combination neural net and rule based programming). If the student
makes a mistake the system analyzes the mistake and explains the mistake 
(using pictures, scripts, audio, etc) to the student. Thus it acts as
a constant tutor to the student in a home setting.

Thus it is perfect for at home tutoring. We think that the 3rd world
students will not have timely access to tutors and the parents may not
have the necessary expertise to handle arithmetic.

This is math in some sense but quite far away on the spectrum from
doing Sage on an XO :-). It is probably best to have any further
discussions off the Sage lists.

Tim Daly
Axiom



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[sage-devel] Re: Lulu publication

2008-04-17 Thread Robert Bradshaw

FYI, in the less than a month that it's been available, 22 people  
have purchased the (physical) Sage DVD from Lulu.

On Jan 30, 2008, at 12:40 PM, David Joyner wrote:

 Thanks.
 I tested this by buying a copy online on the 25th. It was printed 3
 days later and just
 arrived, carefully packaged, today. Printing quality and binding  
 look good.
 No complaints.

 On Jan 25, 2008 4:35 AM, Robert Bradshaw  
 [EMAIL PROTECTED] wrote:

 You can now by a hard copy of the Sage tutorial at http://
 www.lulu.com/content/1932117

 I will be publishing a DVD there too as soon as I can get the iso to
 upload.

 - Robert


 On Dec 28, 2007, at 1:06 PM, William Stein wrote:

 On Dec 27, 2007 5:58 AM, David Joyner [EMAIL PROTECTED] wrote:

 On Dec 27, 2007 3:40 AM, William Stein [EMAIL PROTECTED] wrote:

 Hi,

 I occasionally get emails like the one below.  There's no way I
 have the
 time or inclination to burn and mail out DVD's of Sage to
 people.  Does
 anybody:

(1) want to volunteer to do this sort of thing in exchange for
 some
  shipping and handling fees; then all such requests get
  refereed to you, or

(2) Is there some dot-com that does something like this for a
 fee?


 Maybe lulu does:
 http://www.lulu.com/en/help/disc_faq
 Apparently, It has to be set up first and I don't know how easy it
 is to
 upgrade to a new version.

 This looks excellent.   Basically you upload an iso of the data
 dvd, and
 they burn and ship it on demand for  $10/copy.This is
 perfect.  I could
 just do this once every time we have a major release.   I can add a
 few
 dollars on each DVD, to pay whoever actually does the work of  
 putting
 together the ISO, updating it, etc.

 David -- many thanks for tracking this down.

  -- William






 

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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread Robert Bradshaw

I'm interested too.

On Apr 17, 2008, at 4:02 PM, Yi Qiang wrote:

 Yes, I'm definitely interested. Please forward the meeting details
 when you've got them. I think the goals of the OLPC align quite well
 with some of the goals of Sage. You should probably also include the
 sage-edu folks who are probably going to be even more interested in
 this.

 On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED]  
 wrote:

  Hi,

  Is there anybody at UW that is interested in meeting with some OLPC
  people?  (I'm cc'ing this to sage-devel, because people there are  
 generally
  interested in OLPC.)


  -- Forwarded message --
  From: Seth Woodworth [EMAIL PROTECTED]
  Date: Thu, Apr 17, 2008 at 3:40 PM
  Subject: One Laptop Per Child Is very interested in Sage
  To: [EMAIL PROTECTED]


  Hello,

  I'm an intern at OLPC and I'm throwing an event at UW this weekend.
  While the event is specifically about healthcare, there will be
  several people there that are strongly involved in OLPC.  For some
  time SAGE has been kicked around as a back end for a graphic
  calculator application on the XO laptop, and there are many  
 developers
  that would love to pick your brain on the subject.

  Since there will be several OLPC people at the UW this weekend, I  
 was
  wondering if you would be interested in meeting up with us and
  discussing SAGE.  This invitation of course applies to any of the
  other SAGE team members as well.

  The XO laptop is a great piece of machinery.

  Seth Woodworth, HealthJam Organizer.



  --
  William Stein
  Associate Professor of Mathematics
  University of Washington
  http://wstein.org




 

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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread David Joyner

On Thu, Apr 17, 2008 at 7:34 PM, William Stein [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 4:02 PM, David Joyner [EMAIL PROTECTED] wrote:
  
On Thu, Apr 17, 2008 at 6:56 PM, alex clemesha [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] 
 wrote:
  
Hi,
  
Is there anybody at UW that is interested in meeting with some OLPC
people?  (I'm cc'ing this to sage-devel, because people there are 
 generally
interested in OLPC.)

  I'm not in Seattle, so I can't meet with the OLPC people,
  but a very enthusiastic +1 on this effort.  Sounds awesome.
  
Ditto. I do own an XO machine so possibly can at least do some testing.

  How did you get that?  I want one.

Now I think you might have to go to ebay or something.
Before last Xmas OLPC offered a 1 for 2 deal, where you bought 2,
they sent you 1, and gave the other one to a child somewhere.


  William



  


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[sage-devel] Re: One Laptop Per Child Is very interested in Sage

2008-04-17 Thread Alfredo Portes

At some point it was easy to get one if you were developing a possible
interface or program to enhance the laptop.

http://wiki.laptop.org/go/Developers_Program

Not sure after the release how is now done.

Regards,

Alfredo

On Thu, Apr 17, 2008 at 9:10 PM, David Joyner [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 7:34 PM, William Stein [EMAIL PROTECTED] wrote:
  
On Thu, Apr 17, 2008 at 4:02 PM, David Joyner [EMAIL PROTECTED] wrote:

  On Thu, Apr 17, 2008 at 6:56 PM, alex clemesha [EMAIL PROTECTED] 
 wrote:
  
On Thu, Apr 17, 2008 at 3:50 PM, William Stein [EMAIL PROTECTED] 
 wrote:

  Hi,

  Is there anybody at UW that is interested in meeting with some 
 OLPC
  people?  (I'm cc'ing this to sage-devel, because people there 
 are generally
  interested in OLPC.)
  
I'm not in Seattle, so I can't meet with the OLPC people,
but a very enthusiastic +1 on this effort.  Sounds awesome.

  Ditto. I do own an XO machine so possibly can at least do some testing.
  
How did you get that?  I want one.

  Now I think you might have to go to ebay or something.
  Before last Xmas OLPC offered a 1 for 2 deal, where you bought 2,
  they sent you 1, and gave the other one to a child somewhere.



  
William
  
  
  

  

  


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[sage-devel] Re: Sage notebook and safari

2008-04-17 Thread William Stein

On Thu, Apr 17, 2008 at 12:14 PM, Justin C. Walker [EMAIL PROTECTED] wrote:

  Hi, all,

  This is to complete an earlier discussion.  I filed a bug with Apple
  regarding the failure of tab-completion with Safari 3.1.  I think Tom
  has figured a way of dealing with this, but here is Apple's reply:

  We no longer send keypress for tab keys.  That's likely the cause of
  this issue.  Whatever you are doing in their[sic] keypress handler to
  do text completion should be done in the keydown handler.  Please try
  that and let us know if that resolves the issue.


Thanks.  Tom and I fixed this problem last week.  The above paragraph
is basically what is behind how we fixed the problem, which is reassuring.

Thanks for the follow up.

William


-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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[sage-devel] Re: Sage notebook and safari

2008-04-17 Thread Justin C. Walker


On Apr 17, 2008, at 19:07 , William Stein wrote:


 On Thu, Apr 17, 2008 at 12:14 PM, Justin C. Walker [EMAIL PROTECTED]  
 wrote:

 Hi, all,

 This is to complete an earlier discussion.  I filed a bug with Apple
 regarding the failure of tab-completion with Safari 3.1.  I think Tom
 has figured a way of dealing with this, but here is Apple's reply:

 We no longer send keypress for tab keys.  That's likely the cause of
 this issue.  Whatever you are doing in their[sic] keypress handler to
 do text completion should be done in the keydown handler.  Please try
 that and let us know if that resolves the issue.


 Thanks.  Tom and I fixed this problem last week.  The above paragraph
 is basically what is behind how we fixed the problem, which is  
 reassuring.

I saw Tom's msg to the list, but being afflicted with GRS (GUI  
Rejection Syndrome), it was not at all clear to me that the fix he  
reported and Apple's comments were in any way related :-}

Justin

--
Justin C. Walker, Curmudgeon-At-Large
Director
Institute for the Enhancement of the Director's Income

Weaseling out of things is what separates us from the animals.
  Well, except the weasel.
   - Homer J Simpson




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