[sage-support] Re: Problem with sagecell server installation

Dne úterý, 18. září 2012 15:24:57 UTC+2 Jason Grout napsal(a): > > On 9/18/12 7:11 AM, ma...@mendelu.cz wrote: > That's because the instructions to #12719 don't include installing the > spkg, like the instructions to #13121 do (#12719 assumes that you > install the spkg before the patches).

Re: [sage-support] Strange results with multivariate resultants

Hi, I may be missing something, but the resultant = 1 confuses me. According to wikipedia [1] the multivariate resultant or Macaulay's resultant of n homogeneous polynomials in n variables is a polynomial in their coefficients that vanishes when they have a common non-zero solution My pain is $1

[sage-support] Re: power representation of finite field elements

Hi again. Maybe following two options will be useful for you sage: K.=GF(2^8,repr='int') sage: K.=GF(2^8,repr='log') Here is the link to functions for converting polynomials over a finite find using a multiplicative generator. I took them from my class,

[sage-support] Re: power representation of finite field elements

Thanks Oleksandr, I found b.log, but what I would like is for the default printing of a field element in F. = GF(256) to be 0 or a^t for some t in [0..254]. This is partly for legibility when I create polynomials over F. A coefficient of the from a^t is much easier to read than one that is a de

[sage-support] Can't delete worksheets as admin..why? (Sage ver 5.2)

I logged into Sage as admin and noticed there were a ton of open worksheets. (I have a lot of users.) I can't delete active worksheets. If I selected one or more and press the "Delete" button, nothing happens? cs -- You received this message because you are subscribed to the Google Groups

[sage-support] Re: Plotting (non-compact) polyhedra and (half) infinite rays/lines

Thanks for the fast reply! On Tuesday, September 18, 2012 6:24:29 PM UTC+2, Volker Braun wrote: > > There is not enough space on your screen to plot non-compact polyhedra, so > what exactly do you expect as output? well, the same is true for function plotting but f=3*x; plot(f) gives a reasona

[sage-support] Re: Plotting (non-compact) polyhedra and (half) infinite rays/lines

There is not enough space on your screen to plot non-compact polyhedra, so what exactly do you expect as output? Right now, the compact part plus (minkowski sum) the interval (origin, ray generator) is drawn. I guess you expect the whole half plane clipped by the plot window? How big should the

[sage-support] Plotting (non-compact) polyhedra and (half) infinite rays/lines

The plot routine for polyhedra (and also the render_solid and the render_wireframe method) seem to plot only part of the polyhedron. Take as an example q1=Polyhedron( vertices=[[0,0]], lines=[[-2,1]], rays=[[0,42]]) q.plot() Here only the line [-2,1] and a strip of length 1 in direction [0,1]

Re: [sage-support] Strange results with multivariate resultants

Hi, I'm not sure if I understand what is counterintuitive about the results. * Georgi Guninski [2012-09-18 16:55:37 +0300]: > sage: K.=PolynomialRing(QQ) > sage: p1=(x2-1)*(x3+2) > sage: p2=(x2-1)*(x3+3) > sage: p1.resultant(p2) > 1 This is the resultant of p1 and p2 w.r.t. x1 (the first variabl

[sage-support] Strange results with multivariate resultants

I had to workaround against this counterintuitive results. 5.2 and 5.3 on linux x86_64 sage: K.=PolynomialRing(QQ) sage: p1=(x2-1)*(x3+2) sage: p2=(x2-1)*(x3+3) sage: p1.resultant(p2) 1 sage: K_.=PolynomialRing(QQ) sage: p1_=K_(p1) sage: p2_=K_(p2) sage: p1_.resultant(p2_) 0 sage: gp.polresultan

[sage-support] Re: Problem with sagecell server installation

On 9/18/12 7:11 AM, ma...@mendelu.cz wrote: Fresh (base system, web server, ssh server) installation on Debian 6 with uuid-dev, git and build-essential installed and following comments at https://github.com/sagemath/sagecell/issues/344 The result: 1. ./sage -br at the end of the ticket 12719 f

[sage-support] Re: Problem with sagecell server installation

Fresh (base system, web server, ssh server) installation on Debian 6 with uuid-dev, git and build-essential installed and following comments at https://github.com/sagemath/sagecell/issues/344 The result: 1. ./sage -br at the end of the ticket 12719 fails when starting sage after compliation.

[sage-support] Re: Problem with sagecell server installation

I'll try to test it. But if I remember correctly, I had to upgrade ipython first and then install trac 12719. Otherwise ./sage -br fails to start sage. Robert Dne pondělí, 17. září 2012 22:39:31 UTC+2 Jason Grout napsal(a): > > On 9/17/12 12:29 PM, kcrisman wrote: > > Could one of you post a (c