[sage-support] strange behavior in matrix substitution

2010-06-12 Thread Byungchul Cha
Please tell me if this is a bug, or, I'm missing something obvious... sage: a = 3 # Assign a value to a variable a sage: b = a # Create a copy of a sage: b = 2 # Change the value of b sage: b 2 sage: a # The value of a remains unchanged, as expected. 3 So far, it looks good to me. But, when I do

[sage-support] Re: Setting up a sage server securely for students' use

2010-01-15 Thread Byungchul Cha
Okay. I think I just finished all the steps I wrote in my original post. Overall, it was not terribly difficult, but, it was not completely straightforward, either. FYI, my linux skill is not very sophisticated, but, not too bad compared to, say, my colleagues in my department, whatever that means

[sage-support] Setting up a sage server securely for students' use

2010-01-07 Thread Byungchul Cha
Hi. I am trying to set up a sage server for my students' use. Several previous posts I've seen seem to suggest: 1. Create an account, say "server", in the machine I'm running sage notebook. Create another (more more) accounts, say "worker", (or "worker1", "worker2", etc,.). 2. Set up ssh keys so

[sage-support] Sage password lost

2009-08-28 Thread Byungchul Cha
I am running sage in one of our department servers, so that my students can use them. If my students lose their password, how can I recover it for them? Thanks. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe f

[sage-support] Re: OS X Clickable application

2009-03-19 Thread Byungchul Cha
Thanks in advance. On Mar 18, 9:50 pm, Minh Nguyen wrote: > Hi, > > On Thu, Mar 19, 2009 at 1:43 AM, Byungchul Cha wrote: > > > I remember reading something about making a clickable sage application > > for mac os X. Can I now do such a thing with sage 3.4? If so, where I >

[sage-support] OS X Clickable application

2009-03-18 Thread Byungchul Cha
I remember reading something about making a clickable sage application for mac os X. Can I now do such a thing with sage 3.4? If so, where I can find the instruction? Thanks. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com T

[sage-support] Re: sagetex issues

2009-03-07 Thread Byungchul Cha
I experienced a similar problem and here's how I resolved it. First, I modified one line in my sagetex.sty file in my texmf directory (you said you put yours in ~/Library/texmf/tex/latex/) in order to specify the directory where sagetex.py can be found. The original sagetex.sty has a line %% \.

[sage-support] Re: Speeding up the for loop

2008-10-09 Thread Byungchul Cha
This looks much reasonable. Again, thanks for everyone's help. BTW, I'm using the latest version of sage and both point and point3d work for me. On Oct 9, 6:13 pm, William Stein <[EMAIL PROTECTED]> wrote: > Byungchul Cha wrote: > > > I am using sage for my calc III students.

[sage-support] Speeding up the for loop

2008-10-09 Thread Byungchul Cha
I am using sage for my calc III students. The following short code produces about 500 points on a sphere. pts=[]; number_of_points=500 for t1 in srange(0, pi, n(pi/sqrt(number_of_points))): for t2 in srange(0, 2*pi, n(2*pi/sqrt(number_of_points))): pts.append((sin(t1)*cos(t2), sin(t1)*sin(

[sage-support] Settings menu on notebook

2008-06-06 Thread Byungchul Cha
I'm running sage 3.0.1 at a Mac, 10.5, installed as a prebuilt binary. I noticed that, when I log into my account at www.sagenb.org, there is a "Settings" menu (where you can change your password and email address) on the upper right corner. But, when I run a sage notebook on my computer, that men