er
>
>
> Op donderdag 24 april 2014 18:54:32 UTC+1 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 li
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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,
det
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 >
> wrote:
>
> > Update: I re-i
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
&
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
in graphs. Normal 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 PD
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:
---
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 -> Infi
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 (n+1
;ve just now copied the
>> packages on the PPA over to 12.10 and 13.04 -- this might take a while
>> (minutes? hours?) to complete.
>> Note from 5.9 on this is 64bit only.
>>
>> 32bit for raring 13.04 is available from the sagemath.org binary
>> download se
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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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 distan
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