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by paffenholz
02 Feb 2012, 11:58
Forum: Helpdesk
Topic: Schlegel diagrams using jreality
Replies: 6
Views: 8858

Re: Schlegel diagrams using jreality

I currently can't reproduce the error on my Mac (but with a 64bit version). One thing you could try is to recompile the java part of polymake using

Code: Select all

make all-java
by paffenholz
23 Jan 2012, 13:45
Forum: Helpdesk
Topic: RelInt Lattice Points
Replies: 3
Views: 5360

Re: RelInt Lattice Points

INTERIOR_LATTICE_POINTS always computes points in the relative interior (in fact, it usually computes the lattice points first and then checks which do not lie on a facet, and does not care for the affine hull).

Andreas
by paffenholz
13 Jan 2012, 15:36
Forum: Helpdesk
Topic: Computing property REGULAR of a fan
Replies: 1
Views: 3562

Re: Computing property REGULAR of a fan

There is no proper method to decide polytopality of a fan. So in polymake this property is only known if - then fan comes from a polytope (then it is true) - the fan is not complete or the dual graph not connected (then it is false) or you provide it during input. If you know the value of REGULAR fo...
by paffenholz
13 Dec 2011, 10:10
Forum: Helpdesk
Topic: HilbertBasis of a Cone<Rational>
Replies: 4
Views: 6168

Re: HilbertBasis of a Cone<Rational>

polymake should compute all needed properties by itself, provided there is a way to do so. For HILBERT_BASIS it should be sufficient to provide RAYS/INPUT_RAYS or FACETS/INEQUALITIES. The cone must be pointed.

Can you please provide an example of a cone where the computation fails?
by paffenholz
24 Nov 2011, 17:24
Forum: General Discussion
Topic: pypolymake: A Sage Interface to polymake
Replies: 10
Views: 56616

Re: pypolymake: A Sage Interface to polymake

ps: I also see that installing Ubuntu 11.10 corrupted my polymake. I thought that I try the same version as Michael did, but I cannot download polymake-2.9.10.tar.bz2.
The link on the download page seems to be broken. There is another version of 2.9.10 linked on
this page
by paffenholz
15 Nov 2011, 13:17
Forum: Helpdesk
Topic: polytope compute with 'INEQUALITIES' -> lattice points
Replies: 9
Views: 12302

Re: polytope compute with 'INEQUALITIES' -> lattice points

1. The problem statement, all variables and given/known data Find the solution set of: |x+1|+|x−2|≤5 Probably you want to do some case distinctions here to get rid of the absolute values in your inequality. However, this is the is the wrong place to aks this type of questions. The polymake forum ai...
by paffenholz
08 Nov 2011, 21:57
Forum: Helpdesk
Topic: Morse matchings seem to be missing
Replies: 1
Views: 3745

Re: Morse matchings seem to be missing

The bad news is that the error is not the non-existence of the *.cc files, but the appearance of the rule file defining the morse matching operations in the release. With the transition from 2.3 to 2.9 the way functions are called has changed fundamentally, and all c++ files need to be rewritten in ...
by paffenholz
31 Oct 2011, 15:40
Forum: Helpdesk
Topic: Problems with script ”gc_closure”
Replies: 3
Views: 5268

Re: Problems with script ”gc_closure”

The script only works for full-dimensional polytopes, but, unfortunaltely, does not test this in the current version. A generating set of the semigroup of integer points in each normal cone is not unique for non-pointed cones (which is the case if the polytope is not full-dimensional), so computatio...
by paffenholz
11 Oct 2011, 00:18
Forum: Helpdesk
Topic: Defining not pointed polyhedra via POINTS
Replies: 8
Views: 9546

Re: Defining not pointed polyhedra via POINTS

Unfortunately you have found two bugs in one blow. The first is already during initialization. If the input does not explicitely contain some section defining lineality then the polytope is assumed to be pointed. As a workaround you could state (part of the) lineality space in the input: $P=new Poly...
by paffenholz
25 Sep 2011, 09:23
Forum: Helpdesk
Topic: Reconfigure error under Ubuntu 11.04
Replies: 6
Views: 9101

Re: Reconfigure error under Ubuntu 11.04

The first of your problem is known, but it should nevertheless configure javaview for use with polymake. Have you tried? Maybe issue the reconfigure command twice. If your installation of polymake does not start anymore due to these problems, delete the folder ".polymake" in your home dire...

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