On Wednesday, September 21, 2016 at 10:12:55 AM UTC-4, Dima Pasechnik wrote:
>
> yes, it does install for me, and work, too:
> all the tests in geometry/polyhedron/palp_database.py pass.
>
Great, thanks for checking! I'll take any further questions to the
SageMathCloud list, as it sounds like
On Tuesday, September 20, 2016 at 3:15:37 PM UTC-4, vdelecroix wrote:
>
> Justin is right, the question is precisely: how Sage was installed on
> this computer?
>
It's a bog-standard SageMathCloud installation. Sounds like creating a
development version of Sage in this project is the next
I tried to install the PALP database for four-dimensional reflexive
polytopes on the SageMath cloud, following the documentation at
http://doc.sagemath.org/html/en/reference/geometry/sage/geometry/polyhedron/palp_database.html
,
which suggests the shell command
sage -i polytopes_db_4d
.
Is there a quick way to factor the coefficients of a polynomial over the
integers in Sage?
For example, given x^2+9, I would like to rewrite it as x^2+3^2.
I can see a slow way to do this (iterate over poly.factor_list(), extract
coefficients, factor, rebuild the polynomial). But perhaps
On 6/1/2014 3:49 PM, Tom Boothby wrote:
g = Graph([(i,(i+1)%6,i%2) for i in range(6)])
h = Graph([(i,(i+2)%6,i%2) for i in range(6)])
k = Graph([(i,(i+3)%6,i%2) for i in range(6) if i3])
[...]
Nice. Thanks!
--Ursula.
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On 5/30/2014 11:47 PM, P Purkayastha wrote:
Perhaps you can try using different colors instead of different line
styles. There is an option called 'color_by_label', where you can set a
label for some edges and color them accordingly.
I am aware of this option, but I want to be able to color
Is it possible to display a directed graph in Sage so that only some of the
edges are dashed? I found the edge_style option, but that seems to apply
to all of the edges simultaneously.
UAW
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I recently learned that if A is a polynomial ring in Sage in variables x,
y, and z, the command
A({tuple([1,1,1]):1})
returns x*y*z.
Can somebody explain this syntax to me? I understand tuple([1,1,1]), but
what are the curly brackets and the colon doing?
Also, is there a reason that
On 10/1/2013 8:51 AM, John Cremona wrote:
Can somebody explain this syntax to me? I understand tuple([1,1,1]), but
what are the curly brackets and the colon doing?
The argument is a python dict, which you should read up about for more
details.
Thanks, that's exactly what I needed to know!
About a week and a half ago, I reset my password on trac.sagemath.org .
Since then, I have not been able to log in. I have sent multiple emails to
sage-trac-account@ googlegroups.com, but received no response.
Can anyone help me out? My username is ursula .
(I can still edit the wiki; I
Turns out my work email silently decided that all trac-related email was
spam! My apologies for harassing everyone.
UAW
On Tuesday, July 23, 2013 10:39:43 AM UTC-5, Ursula Whitcher wrote:
About a week and a half ago, I reset my password on trac.sagemath.org .
Since then, I have not been
I would like to construct a ring over a p-adic field that includes a
(p-1)st root of -p. I tried:
R = Qp(5, 10)
S.v = R[]
piPoly = v^(5-1)+5
T.w = R.ext(piPoly)
But elements of T seem to be power series in w. I would expect them to be
described using power series in p (up to O(p^10)) and w,
On Saturday, July 13, 2013 1:40:53 PM UTC-7, Ursula Whitcher wrote:
I would like to construct a ring over a p-adic field that includes a
(p-1)st root of -p. I tried:
R = Qp(5, 10)
S.v = R[]
piPoly = v^(5-1)+5
T.w = R.ext(piPoly)
But elements of T seem to be power series in w. I would
On Friday, June 7, 2013 12:18:49 PM UTC-5, William wrote:
By the way, I'm curious what features are missing from
https://cloud.sagemath.com that you might need for it to work for your
project? For example, what extra packages would you need,
documentation, etc.? Too many bugs (if so,
Can folks help me troubleshoot the password problem described below?
I installed Sage in my personal directory, and set the permissions so
that the two other members of my research group can also run my copy of
Sage. I ran ./sage -notebook , and created an admin account and a
personal account
Short version of my question:
What is supposed to happen when different users simultaneously invoke
./sage -notebook for the same installation of Sage?
Long version:
I have a small research group this summer, consisting of myself and two
undergraduate students. We don't need to engage in
Would it be possible to add a link to the Sage wiki to the list of helpful
resources under Further resources at
http://www.sagemath.org/help.html
?
UAW
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On 9/27/2012 6:54 PM, Dima Pasechnik wrote:
Is there a test patch for Sage which doesn't do anything
substantive? I have been writing notes about how to patch a
Windows installation of Sage, and it would be nice to have an
example.
there should not be anything specific about patching Sage
On Monday, September 24, 2012 4:51:28 PM UTC-5, Volker Braun wrote:
The VirtualBox guest additions are already installed in the VM that we are
distributing, but they don't do clipboard integration on the console (only
in X).
You can log in via ssh from the host machine, then you can use
I've been graphing some 2D lattice polytopes using a trick I learned from
Andrey Novoseltsev a while ago: plot the polytopes in 3D, then rotate into
the xy plane for a two-dimensional image. I discovered that when I graph a
larger lattice polytope, the intersection of the x and y axes moves
On 9/17/2012 4:28 PM, Volker Braun wrote:
Incidentally, I've been working on an alternative implementation of
lattice polytopes. The alternative code has support for 2-d plots of
polygons. Here is an example (click on Run to execute):
http://sagepad.org/sp/pad/505488a186b72107de3c1080
I'm trying to decide how and where to install Sage. I'm hoping you
can all give me some guidance (and that this thread will be useful to
other folks in a similar position).
In the past, I have used Sage in three ways:
1) Via the notebook server at sagenb.org
2) Via an account on one of the
Is there a place I can sign up to receive announcements about upcoming
Sage Days and Sage Education Days?
--Ursula.
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On Mar 1, 2:11 pm, Volker Braun vbraun.n...@gmail.com wrote:
I agree with your example, of course. But I interpreted Dmitri's question
somewhat differently, that he wants to start with some set of lattice points
and find out if they all lattice points of the convex hull. Though thinking
On Feb 24, 10:57 am, Volker Braun vbraun.n...@gmail.com wrote:
On Thursday, February 24, 2011 6:29:11 PM UTC, Dmitri wrote:
I think my problem is actually doing the comparison. So I have this
chosen set of points which I don't know is convex. I compute its
convex hull. Now how do I compare
Can Sage compute the projective dual of a plane curve?
Thanks!
Ursula.
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On 4/27/2010 5:06 PM, Alex Ghitza wrote:
On Tue, 27 Apr 2010 16:15:24 -0700 (PDT), Ursula Whitcherurs...@math.hmc.edu
wrote:
Can Sage compute the projective dual of a plane curve?
Not at the moment. I'll open an enhancement ticket for this as a
requested feature. It looks like an
I'd like to know H^3(G,Z) for two particular finite groups, namely L_2
(7), also known as the Chevalley group PSL(2,F_7), and M_20, a
subgroup of the Mathieu group M_24 which is isomorphic to a semidirect
product of (Z/2Z)^4 with the alternating group A_5.
Is Sage capable of these computations?
I asked Anders Jensen, I would like to compute the weight vectors
corresponding to each reduced Groebner basis in gfan's output. Is
there a way to tell gfan to do this?
He replied:
There is a command weightvector that does exactly this. The command
is hidden (does not show up in the manual or
(I tried to post about my problem once before, so my apologies if this
comes through twice.)
I'm receiving a segmentation error when I try to run a procedure in
the Singular console in Sage. I've previously tested this procedure
in Singular (run by itself) and it worked as designed, so I think
Your bug report isn't so useful if you don't tell us:
* what computer you ran the computation on,
* what version of what software,
* exactly how you did the calculation and what the polynomial is,
* etc.
-- William
I'm ssh'ing in to sage.math.washington.edu. I just posted a
what do you mean by the 'Singular console in Sage'? A cell in the notebook
starting with %singular or the notebook in Singular mode or something from
the commandline like (singular_console())?
I was using singular_console() called from the command line. I'm
running the version of sage
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