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D.16.2.18 isNormal

Syntax:
Polymake::isNormal( polytope p )
Type:
int
Purpose:
1 if the projective toric variety defined by p is projectively normal, 0 otherwise.
Example:
 
  LIB"polymake.lib";
==> Welcome to polymake
==> Copyright (c) 1997-2012
==> Ewgenij Gawrilow, Michael Joswig (TU Darmstadt)
==> http://www.polymake.org
  intmat M[6][4]=1,1,1,2, 1,-1,-1,-2, 1,1,0,0, 1,-1,0,0, 1,0,1,0, 1,0,-1,0;
  polytope p = polytopeViaPoints(M);
  Polymake::isNormal(p);
==> polymake: used package cddlib
==>   Implementation of the double description method of Motzkin et al.
==>   Copyright by Komei Fukuda.
==>   http://www.ifor.math.ethz.ch/~fukuda/cdd_home/cdd.html
==> 
==> polymake: used package lrslib
==>   Implementation of the reverse search algorithm of Avis and Fukuda.
==>   Copyright by David Avis.
==>   http://cgm.cs.mcgill.ca/~avis/lrs.html
==> 
==> polymake: used package 4ti2
==>   4ti2 -- A software package for algebraic, geometric and combinatorial p\
   roblems on linear spaces.
==>   Copyright by 4ti2 team.
==>   http://www.4ti2.de/
==> 
==> 0