schreef Ed Scheinerman:
Glad to see this has gained some traction. Here is an illustration of the
immediate issue for which this would have been helpful. I wanted to produce
an illustration explaining lines in the hyperbolic plane using the Poincare
disk model. It's the arc of a circle whose
at http://groups.google.com/group/sage-support.
For more options, visit https://groups.google.com/d/optout.
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Ed Scheinerman (e...@scheinerman.net)
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Does Sage have, or is there a package I can add, that implements basic
plane geometry objects and operations. The sort of thing I'd like to do is,
given two points, construct the line that contains them. Or given two
circles, intersect them yielding 0, 1, or 2 points. Given a set of points,
Yes. I reinstalled the same version of XQuartz as I had before, but it was
the first such reinstall since upgrading to Mavericks.
On Wednesday, October 30, 2013 12:41:23 AM UTC-4, yomcat wrote:
On 30/10/2013, at 0945, Ed Scheinerman edward.sc...@gmail.comjavascript:
wrote:
Update: I re
Update: I re-installed XQuartz and the problem vanished.
On Monday, October 28, 2013 5:44:42 PM UTC-4, Ed Scheinerman wrote:
I have just upgraded my Mac to OS X version 10.9 Mavericks and am
running Sage version 5.12. When I start sage from the command line an
dialogue box opens asking me
I have just upgraded my Mac to OS X version 10.9 Mavericks and am running
Sage version 5.12. When I start sage from the command line an dialogue box
opens asking me about opening Xquartz and that X11 is no longer supported
etc. (See attached image.) I can dismiss past this dialogue box and all
I'm using Sage 5.11 on a Mac
I've been used to creating graphs and then saving them as PDF's for
inclusion in papers. Using code like this:
sage: g = graphs.PetersenGraph()
sage: pic = g.plot()
sage: pic.save('pete.pdf')
But now it just throws a bunch of errors:
plots work fine.
I have opened http://trac.sagemath.org/ticket/15173 to track this.
On 09/07/2013 09:06 PM, Ed Scheinerman wrote:
I'm using Sage 5.11 on a Mac
I've been used to creating graphs and then saving them as PDF's for
inclusion in papers. Using code like this:
sage
When I try this:
sage: y = gamma(x+1/2)/gamma(x)/sqrt(x)
sage: limit(y,x=oo)
0
sage: plot(y,x,1,50)
I observe that the limit appears to be 1, not 0.
Indeed, Mathematica confirms:
In[1]:= y = Gamma[x + 1/2]/(Gamma[x]*Sqrt[x])
Out[1]= Gamma[1/2 + x]/(Sqrt[x] Gamma[x])
In[2]:= Limit[y, x -
I am looking to evaluate $\sum_{k=0}^n 1/\binom{n}{k}$ so I type:
sage: n = var('n')
sage: k = var('k')
sage: sum(1/binomial(n,k),k,0,n)
(n + 1)*2^(-n)
and that answer is wrong.
For example, with n=10 we get
sage: sum(1/binomial(10,k) for k in range(11))
1433/630
but the alleged answer of
I'm using Ubuntu 13.04 and am having trouble upgrading to 5.9. I get this
error message:
W: Failed to fetch
http://ppa.launchpad.net/aims/sagemath/ubuntu/dists/raring/main/binary-amd64/Packages
Ideas?
Thanks.
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Note from 5.9 on this is 64bit only.
32bit for raring 13.04 is available from the sagemath.org binary
download section.
Regards,
Jan
On 6 May 2013 13:02, Ed Scheinerman edward.sc...@gmail.com javascript:
wrote:
I'm using Ubuntu 13.04 and am having
I'm confused by the fact that variables defined inside functions can
leak out and become global variables. Here's what I've noticed.
(1) I create a file called steiner.py for finding the Steiner point
given three points in the plane. Here's my code:
def dist(p,q):
Eulidean distance
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