lundi 23 novembre 2020 à 14:44:00 UTC+1, jplab a écrit :
> Hi all,
>
> I would have posted this question on AskSage, but I can't seem to be able
> to connect through my google account (Authorization Error?). So I put the
> question here.
>
> I would like to know how to i
Hi all,
I would have posted this question on AskSage, but I can't seem to be able
to connect through my google account (Authorization Error?). So I put the
question here.
I would like to know how to iterate through permutation matrices of a fixed
size ($n\times n$) by breadth-first-search (by
Hi Daniel,
As far as I know, no such method is implemented in the polyhedron class.
If I understood your situation, you want to know the set of coordinates
"x_i" such that the projection along that axis is an injective function
i.e. given a point in the image of the projection, you can lift it
Hi,
Thank you for your quick answer!
Ok, that makes sense. I have a follow-up question. I will put it on
sage-devel as it is related to the implementation of a ticket.
Best,
JP
Le lundi 12 octobre 2015 22:21:12 UTC+2, vdelecroix a écrit :
>
> On 12/10/15 12:57, Nathann Cohen wrote:
> >> I
Hi everyone,
Is the following behavior normal:
sage: P = polytopes.regular_polygon(5)
sage: a_vertex = P.vertices()[0]
sage: for facet in P.Hrepresentation(): print facet.contains(a_vertex),
facet.interior_contains(a_vertex)
True False
True True
True False
True True
True True
sage: P = polytope
Hi everyone,
I would like to include some nice tikz pictures of polytopes generated
by sage (see http://trac.sagemath.org/sage_trac/ticket/12083 for the
ticket.) in a tex file.
But since I'm a lazy guy, I want tex to do the work for me. That's why
I thought of a tex command that would:
1) take a
On 26 jan, 12:47, "D. S. McNeil" wrote:
> > (-6.66133814775094e-16, -1.00)
> > <---???
>
> > Why isn't the first coordinate 0??? In theory it should be...
>
> Such things are basically inevitable with floating point whenever any
> number involved c
Hi!
I am interested in computing orbits of vectors in a vector space using
reflections.
More specifically, the vector space is equipped with a inner product
given by a certain Coxeter group (B_4 for those interested...).
Then, I compute some image using my defined reflections operation. At
some
Hi everyone,
My question as two parts:
First, I'm working with a group action on a set of objects and I would
like to generate the orbit of an object.
To simplify, we can think of the group acting on the set as a
permutation group.
Let G be the permutation group and H a subgroup of G.
Basicall
Hi,
We switched to sage4.3.1 on all the machines, and it gives the same
problem.
I think it is related to this ticket:
http://trac.sagemath.org/sage_trac/ticket/5965
Because, if we login with a local account on the machine, the command:
sage: gap(2)
2
Works fine,
But if we login with a netwo
Greetings,
On 1 fév, 14:44, Minh Nguyen wrote:
> I think that is expected. The bug at
>
> http://trac.sagemath.org/sage_trac/ticket/7095
>
> only affects Mac OS X 10.6. You should have no trouble using Sage 4.3
> on Mac OS X 10.5.
Oh, I see! Great!
Thanks again!
JP Labbé
--
To post to this
Hi,
On 1 fév, 14:01, Minh Nguyen wrote:
> Hi,
>
> On Tue, Feb 2, 2010 at 5:29 AM, jplab wrote:
>
>
>
> > My computation are considerably slowed down by this bug and I would be
> > very happy to find a solution! Help! If you need more info, let me
> > know!
&
Hi,
I'm currently using xgrid for my computations... Here is the setup:
We have multiple imac OS 10.6, a intel server with mac OS 10.5 and two
G5 mac (10.5). All of them have sage4.3 (or 4.3.1) binary build.
In order for us to make xgrid work with sage, we gave some more rights
for user "nobody"
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