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D.13.4.22 gorensteinVector

Procedure from library polymake.lib (see polymake_lib).

Usage:
gorensteinVector(p); p polytope

Assume:
isGorenstein(p)==1

Return:
intvec, a vector v such that n*p+v is reflexive for some factor n

Note:
the factor n can be computed via gorensteinIndex(p)

Example:
 
LIB "polymake.lib";
==> Welcome to polymake version
==> Copyright (c) 1997-2015
==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
==> http://www.polymake.org
intmat M[4][3]=1,1,0, 1,0,1, 1,0,0, 1,1,1;
polytope p = polytopeViaPoints(M);
gorensteinVector(p);
==> polymake: used package ppl
==>   The Parma Polyhedra Library (PPL): A C++ library for convex polyhedra
==>   and other numerical abstractions.
==>   http://www.cs.unipr.it/ppl/
==> 
==> 1,1,1