yea. it's connected. i tried the spanning trees too, but I had to look
ob how the trees differ, depending on how they are build.
I've just one small (opticial) problem remaining.
if I plot the tree all vertices are ordert on each level but beacause of
this many lines are crossing. I dont need to
Le 07/02/2011 13:05, Clemens Heuberger a écrit :
I encountered the following bug:
sage: abs(pi*I)
I*pi
I do not know how we define absolute value in Sage. Even in math in
general, I'm not sure of what means the absolute value of a complex
number. Depends on the data of a convex cone ?
I
On Mon, Feb 7, 2011 at 1:27 PM, Laurent moky.m...@gmail.com wrote:
Le 07/02/2011 13:05, Clemens Heuberger a écrit :
I encountered the following bug:
sage: abs(pi*I)
I*pi
I do not know how we define absolute value in Sage. Even in math in general,
I'm not sure of what means the absolute
Unfortunately, I'm relatively new to SAGE and haven't found the answer
to this anywhere:
The basic objects I would like to use are PolynomialRings over a field
of characteristic 2 in n variables, Let's say
R.x,y = PolynomialRing(GF(2), 'x,y')
I would like to act on this by exterior algebras on
Yeah, i guess i have to work as admin.
It's there a way to change the 'admin' user name right?
On 7 feb, 00:05, William Stein wst...@gmail.com wrote:
On Sun, Feb 6, 2011 at 11:29 AM, Daniel M. danielmeji...@gmail.com wrote:
Hi everyone, i need some help configuring my notebook:
When i start
I've spent the last couple of hours frustrated at trying to log in and use
notebooks at sagenb.org. I was attempting to do this while teaching a class,
and had little to no success between 10:30 and 12:20 EST (U.S.). I had this
same experience about a month ago when teaching a different
Hello !!!
Among the wealth of tricky options one can use in plot/show, you will find :
g.plot(layout='tree')
:-)
Nathann
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This is a such a big problem that a conference recently was dedicated
to fixing it. Sometime this year there should be a new notebook system
designed for dealing with lots of users. There are alternative
notebook servers such as http://alpha.sagenb.org, but I don't
recommend telling 75 students to
Same here. I've just about given up on SageNB due to availability problems. A few times I tried to give a demo to sing praises of Sagenb, couldn't log on. Not good.Alpha seems better, but is there a way to mover over/sync your notebooks from the main server?Thanks,-d
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To post to this group,
On 2/7/11 11:59 AM, Thomas Scofield wrote:
I've spent the last couple of hours frustrated at trying to log in
and use notebooks at sagenb.org. I was attempting to do this while
teaching a class, and had little to no success between 10:30 and
12:20 EST (U.S.). I had this same experience about
On Mon, Feb 7, 2011 at 10:21 AM, Jason Grout
jason-s...@creativetrax.com wrote:
On 2/7/11 11:59 AM, Thomas Scofield wrote:
I've spent the last couple of hours frustrated at trying to log in
and use notebooks at sagenb.org. I was attempting to do this while
teaching a class, and had little to
On Sun, Feb 6, 2011 at 11:29 AM, Daniel M. danielmeji...@gmail.com wrote:
Hi everyone, i need some help configuring my notebook:
When i start the notebook server typing notebook() on the sage
prompt it always login as 'admin' so i have to log out and enter as my
user defined account.
I've
Santanu Sarkar a écrit :
How one can find integral abs(cos(x+y)) where x varies from 0 to pi
and y varies from 0 to pi in Sage?
You must help Sage (in fact Maxima bellow) for these integrals.
cos(x+y) = 0 for 0 = x+y = pi/2 or 3*pi/2 = x+y = 2*pi
cos(x+y) = 0 for pi/2 = x+y = 3*pi/2
First
Hi,
Could somebody suggest a message i can post at sagenb.org (next to the
login box) explaining the situation?
On Monday, February 7, 2011, Robert Bradshaw
rober...@math.washington.edu wrote:
On Mon, Feb 7, 2011 at 10:21 AM, Jason Grout
jason-s...@creativetrax.com wrote:
On 2/7/11 11:59 AM,
Yea, sure. but my problem is a tree like this:
1
/ \
23 45
and so on.
but i don't need it in that order I have a few crossing edes in it and
I'd like to have one like
1
/ \
35 24
or
1
/ \
25 34
or someting like that, such that i have just a minimal number of crosssings.
even
Alpha seems better, but is there a way to mover over/sync your notebooks from
the main server?
Not yet (though I suppose someone with root access might be able to
move your login credentials with a lot of effort...), but you should
be able to just download all Sage worksheets you care about at
It's 2*pi since the integral of abs(cos(x+y)) from x=0 to pi is 2
(independent of y). But here's how you can get Sage to compute a
numerical integral for you:
sage: f = lambda y: numerical_integral( lambda x: abs(cos(x+y)), 0,
pi )[0]
sage: f(0.0001)
1.0001
sage: numerical_integral(
Thanks to matplotlib developer Jouni Seppänen, this issue has (hopefully)
been fixed upstream:
In the meantime, I will commit a quick workaround that just disables
the fonts we can't handle instead of aborting with an assert.
Now committed in revision 8955 (1.0 maintenance branch) and 8956
Nevertheless, I've found remarkably few (given my 2-for-2 batting
average) messages like this in the list archives over the last year.
Is this not a problem for others, just me doing something wrong?
I have had a lot of lag on the sage servers this past semester.
However, I cannot say if its
On Monday, February 7, 2011 7:52:52 PM UTC+1, robertwb wrote:
Sage is a victim of its own success!
I think it's really great that there is an online notebook to try sage, but
we should post a warning that this is not intended for serious work and we
are working on it.
Related to that, I
On Mon, Feb 7, 2011 at 3:59 PM, Harald Schilly harald.schi...@gmail.com wrote:
On Monday, February 7, 2011 7:52:52 PM UTC+1, robertwb wrote:
Sage is a victim of its own success!
I think it's really great that there is an online notebook to try sage, but
we should post a warning that this is
On Mon, 07 Feb 2011 at 11:42AM -0800, Michael Anselmi wrote:
Thanks to matplotlib developer Jouni Seppänen, this issue has (hopefully)
been fixed upstream:
In the meantime, I will commit a quick workaround that just disables
the fonts we can't handle instead of aborting with an assert.
On Feb 7, 7:05 pm, Robert Bradshaw rober...@math.washington.edu
wrote:
On Mon, Feb 7, 2011 at 3:59 PM, Harald Schilly harald.schi...@gmail.com
wrote:
On Monday, February 7, 2011 7:52:52 PM UTC+1, robertwb wrote:
Sage is a victim of its own success!
I think it's really great that there
On Feb 7, 5:05 am, Clemens Heuberger clemens.heuber...@gmail.com
wrote:
I encountered the following bug:
sage: abs(pi*I)
I*pi
The correct answer would have been pi.
Several other examples show a different behaviour, e.g.
sage: abs(log(2)*I)
abs(I*log(2))
Here, the answer is correct
On Feb 7, 12:00 pm, Francois Maltey fmal...@nerim.fr wrote:
Santanu Sarkar a crit :
How one can find integral abs(cos(x+y)) where x varies from 0 to pi
and y varies from 0 to pi in Sage?
You must help Sage (in fact Maxima bellow) for these integrals.
The Maxima add-on package
On Mon, Feb 7, 2011 at 4:05 PM, Robert Bradshaw
rober...@math.washington.edu wrote:
On Mon, Feb 7, 2011 at 3:59 PM, Harald Schilly harald.schi...@gmail.com
wrote:
On Monday, February 7, 2011 7:52:52 PM UTC+1, robertwb wrote:
Sage is a victim of its own success!
I think it's really great
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