I just finished a worksheet for my linear algebra class and while working
on it I had to start over 5 times because I was nailed with the rearranging
text and output bug. I created the worksheet on my school's notebook
server, which is running Sage 4.7. Each time here is what happened. I
wou
Here's an update. I was trying to create the user "2560Instructor" which I
couldn't, but "Instructor2560" is fine. Is the first excluded for a reason?
Dana
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I'm using Sage 4.7. I've attached screenshots (.jpeg) of both so you can
see what I mean.
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If I plot
var('x y z')
A=implicit_plot3d(x+y+z==1,(x,-3,3),(y,-3,3),(z,-3,3))
B=implicit_plot3d(x+y+z==0,(x,-3,3),(y,-3,3),(z,-3,3),color='red')
A+B
You get what you expect. However, if I plot
var('x y z')
A=implicit_plot3d(x+y+z==1,(x,-3,3),(y,-3,3),(z,-3,3))
B=implicit_plot3d(x+y+z==0,(x,-3,3
I'm currently attempting to create new users on my university's Sage server
(sage.plymouth.edu). I've successfully done this in the past, but I am
currently getting the following error message: "An error occurred rendering
the requested page. More information is available in the server log." A
William Stein wrote:
On Monday, October 3, 2011, D.C. Ernst <mailto:ernst.tr...@gmail.com>> wrote:
> I was just updating one my worksheets that I use as an introduction to
> Sage for my calculus students and I got hit with the random
> rearranging/duplicating/deleting of te
I was just updating one my worksheets that I use as an introduction to
Sage for my calculus students and I got hit with the random
rearranging/duplicating/deleting of text blocks bug. I'm hoping you
know what I mean. This seems to happen to me a lot. Anyway, someone
once told me of a way to start
I was just messing around with implicit_plot and attempted the
following, which is directly from the docstring:
sage: x,y = var('x,y')
sage: f(x,y) = x^2 + y^2 - 2
sage: implicit_plot(f, (-3, 3), (-3,
3),fill=True).show(aspect_ratio=1)
However, I don't think this results in the intended plot (i.e
> I just uploaded the Sage 4.6 .app dmg for 10.6 here:
>
> http://sage.math.washington.edu/home/jason/sage-4.6-10.6-i386-Darwin.dmg
>
> The md5 is 2e2687ee375aa91d0697b18bda6425f9
Excellent. Two questions:
1. What is the md5 for? I just clicked the link and the file started
downloading.
2.
Sorry to be late to the party, but is there a way to obtain the
Sage.app for OSX other than following the instructions located at the
following page?
http://wiki.sagemath.org/SageMacApplication
On Nov 2, 9:29 am, Juan Luis Varona wrote:
> > The window you see is a basic Web browser included in S
Sorry, certainly, I shouldn't have picked x=2 for my limit (based on
the definition of f), but it doesn't work even if I pick x=1.5.
On Sep 22, 8:36 am, "D.C. Ernst" wrote:
> Can anyone help me figure out how to use Sage to calculate limits for
> piecewise function
Can anyone help me figure out how to use Sage to calculate limits for
piecewise functions? I've tried the obvious thing:
f = Piecewise([[(0,1),x], [(1,2),x^2]], x)
lim(f,x=2)
However, this doesn't work. Thanks.
Dana
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If I type the following into Sage (which is straight from the
implicit_plot documentation), I get a black square:
x,y=var('x,y')
f(x,y) = x^2 + y^2 - 2
implicit_plot(f, (-3, 3), (-3, 3),fill=True).show(aspect_ratio=1)
Of course, if you remove "fill=True", then everything works as
expected. The d
Great, thanks! This is the sort of thing I was trying, but I wasn't
handling the indentation correctly. Perhaps y'all can help me with a
related issue. I'd like my abstract algebra students to use Sage to
do some computations involving the group of units mod n. I've been
fiddling around myself
Recently (at least I think so), I have been having trouble using
plot3d with Firefox. I get a message that says "Jmol script has
terminated." I see that they have quite a few message posted in the
past about Jmol issues. Is this current problem particular to me or
there some larger issue?
Thank
On Mar 1, 6:18 pm, Simon King wrote:
> Hi David!
>
> On 1 Mrz., 20:08, David Joyner wrote:
>
> > On Mon, Mar 1, 2010 at 1:26 PM, Dana Ernst wrote:
> > > Is there a way to obtain a subgroup lattice for finite groups? I defined
> > > a finite group G and did G.? but didn't see anything that w
> One way:
>
> sage: G = SymmetricGroup(3)
> sage: GG = gap(G)
I'm guessing that GG doesn't mean anything special, but is just a name
similar to G, and gap(G) is transforming G into a gap object. I'm not
exactly clear when this sort of thing needs to be done, but I guess
I'll learn over time.
>
Thanks!
On Mar 1, 3:00 pm, William Stein wrote:
> On Mon, Mar 1, 2010 at 10:30 AM, Robert Bradshaw
>
> wrote:
> > On Mar 1, 2010, at 9:02 AM, Dana Ernst wrote:
>
> >> What's the proper way to quit a local sage notebook? I've been signing
> >> out of the web browser and then quitting terminal, w
> > I regularly work on three different computers. What is the best way
> > to keep worksheets synchronized that were created using a local Sage
> > Notebook? If I create a worksheet in on one computer, I've had to
> > remember to upload the worksheet to the other local Sage notebooks.
>
I had 28 students working in groups of 2--3 this morning on a
worksheet that they all uploaded to their Sage Notebook accounts. One
of the things that they were supposed to do was edit an HTML cell.
Two of the groups were unable to do this. When they double-clicked
the existing HTML cell, they we
First, thanks to everyone for their help and support. I appear to
have a well-behaved worksheet. I took Jason's advice: I copied the
source under the "edit" tab, pasted it into a new worksheet, and
edited the source. I've saved it, opened it, downloaded it, uploaded
it, etc. multiple times and e
I've copied the source under the "edit" tab and pasted it into a new
worksheet. I'm in the process of returning things to the way they are
supposed to be. I have two questions:
1. This (see below) is weird right?
Greatest common divisor
The command gcd(a,b) returns thehttp://demo.sagenb.org/ja
> > Do you want me to look at the version I sent you and spell out exactly
> > what is screwed up?
>
> That *might* help track down the problem, if we can figure out that
> something went wrong with the way cell ID numbers in the text matched up
> with the ID numbers in the cell directories or some
> You can always go to the "Edit" tab, copy that text, rearrange it
> however you see fit (the cells are between {{{ and }}}, while the
> TinyMCE text is just html outside of the cells). Then open up a new
> worksheet and paste that into the "Edit" tab.
>
> In fact, my guess is that doing this cop
> Just refresh the page, then do "view source" and search for
> "cell_id_list". That will give the ordered list of cells by id
> number.
Were you suggesting that I do this or Jason or someone else?
> To Dana -- you might want to try Firefox if possible -- that's what us
> dev's use the most, so
First, thanks to everyone for helping out and exploring.
> Interestingly, Dana's worksheet has a "cells/-1" directory---none of my
> other worksheets in my small collection on my local notebook have a
> cells/-1 directory.
This wasn't anything I did on purpose.
> Dana: What exactly do you mean b
> What version of Sage are you using?
Whatever sagenb.org is running. I've been doing everything on there
to get as close an experience as my students will get.
Dana
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> If you end up coming back in a day or two, maybe you could answer some
> questions:
>
> (1) Were you entirely using the public sage notebook servers that I
> host (e.g., sagenb.org)?
Yes.
> (2) Exactly what web browser and operating system were you using?
> Anything special about your configu
> It wasn't even clear the OP was using TinyMCE. He writes: " I typed
> up the whole worksheet, it looked great, then saved it," I'm not sure
> what that means.
Yes, I'm using the TinyMCE in the notebook. I thought I had a fix,
which involved moving the worksheet to the demo server. All was
pr
Thanks for all the responses. (The friendly and helpful group of
users is one of the awesome things about Sage.)
Dana
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On Feb 12, 11:45 am, Dana Ernst wrote:
> > I should have added that there are some other testing notebook
> > servers, e.g.,http://demo.sagenb.orgthat are barely used. If
> > sagenb.org is slow you can use those.
>
> Can we use the demo server consistently? Or, should I only point students
> th
I had my Calculus II students working on an Introduction to Sage lab
today. We didn't have access to a computer lab today, so a few of
them brought laptops. I had them working in groups and the first
thing they were supposed to do was create a sagenb account. One
student would create an account,
The "cookies incident" happened to me 4--5 times today in my office
and once at home just now. I'm using Safari and running OS X 10.6 on
both computers. If I delete all cookies with "sage" in them, all
returns to normal, but it's kind of a pain. I haven't tried Jason's
"shift/alt+refresh."
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I'm running Sage 4.3 on OSX 10.6 on both my office computer and my
home computer. Yesterday, I used the following commands (obtained
from kcrisman) to
obtain a copy of Sage that I could run by just clicking on the pretty
purple icon:
export SAGE_APP_BUNDLE = "yes"
export SAGE_APP_DMG = "yes"
./sa
Greetings! I'm a new Sage user running Sage 4.3 on OSX 10.6.
Yesterday, I used the following commands (obtained from kcrisman) to
obtain a copy of Sage that I could run by just clicking on the pretty
purple icon:
export SAGE_APP_BUNDLE = "yes"
export SAGE_APP_DMG = "yes"
./sage -bdist MySage
Aft
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