Re: [sage-support] Re: Create modules

2015-07-01 Thread Justin C. Walker
On Jul 1, 2015, at 10:23 , Amarjeet Kapoor wrote: > i am facing a problem related to this that is I am not able to use > functions inside my sage script defined in modules made by me with more > than one function defined in it but it works in interactive mode unable to > understand problem. (

[sage-support] Re: a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Dima Pasechnik
On Wednesday, 1 July 2015 19:12:41 UTC+1, Volker Braun wrote: > > The fuzzy zero bound for polyhedra over RDF is 10^-6 (not: 10^-10) which > matches the cdd sources. > > oops, OK, right. Could it be that some rough de-homogenisation is to blame? Degeneracy of input is relative; here the smalles

[sage-support] Re: a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Volker Braun
The fuzzy zero bound for polyhedra over RDF is 10^-6 (not: 10^-10) which matches the cdd sources. On Wednesday, July 1, 2015 at 5:50:15 PM UTC+2, Dima Pasechnik wrote: > > > > On Wednesday, 1 July 2015 14:59:20 UTC+1, Volker Braun wrote: >> >> cdd does not correctly handle floating point precis

[sage-support] Re: a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Dima Pasechnik
On Wednesday, 1 July 2015 14:59:20 UTC+1, Volker Braun wrote: > > cdd does not correctly handle floating point precision issues. It works > for non-degenerate input, for everything else there are no guarantees. > > > > On Wednesday, July 1, 2015 at 12:27:09 PM UTC+2, Dima Pasechnik wrote: >> >>

[sage-support] Re: Create modules

2015-07-01 Thread Amarjeet Kapoor
i am facing a problem related to this that is I am not able to use functions inside my sage script defined in modules made by me with more than one function defined in it but it works in interactive mode unable to understand problem. On Wednesday, 1 July 2015 13:30:10 UTC+5:30, avi kaur wrote:

[sage-support] Re: a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Dima Pasechnik
On Wednesday, 1 July 2015 14:59:20 UTC+1, Volker Braun wrote: > > cdd does not correctly handle floating point precision issues. It works > for non-degenerate input, for everything else there are no guarantees. > the input in question is randomly generated... Is there any rationale for _is_ze

[sage-support] Re: a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Volker Braun
cdd does not correctly handle floating point precision issues. It works for non-degenerate input, for everything else there are no guarantees. On Wednesday, July 1, 2015 at 12:27:09 PM UTC+2, Dima Pasechnik wrote: > > While working on http://trac.sagemath.org/ticket/10276, we had trouble > ru

[sage-support] a bug in Polyhedron constructor with RDF data?

2015-07-01 Thread Dima Pasechnik
While working on http://trac.sagemath.org/ticket/10276, we had trouble running Polyhedron with RDF precision. An explicit example showing the issue is in http://trac.sagemath.org/raw-attachment/ticket/10276/x.sage What happens is that Polyhedron() finishes normally, but it creates something th

[sage-support] Create modules

2015-07-01 Thread avi kaur
Hello, I want to ask a question as we create modules in python, in the same way Is it possible to create modules in sage? -- Avi kaur Blog: https://avikashyap620.wordpress.com "There is no lacking of opportunity, The thing is you do not want to see It" -- You received this mes

Re: [sage-support] Re: Algebraic Field or Symbolic Ring ?

2015-07-01 Thread Thierry Dumont
Le 01/07/2015 08:23, Ralf Stephan a écrit : > On Tuesday, June 30, 2015 at 1:24:23 PM UTC+2, tdumont wrote: > > Why is xxc in Symbolic Ring and not in Algebraic Field? > mxx and xxc are essentialy the same thing, no ? > > When you input sqrt(2) it is not clear which object you want, > Sag