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 cdd ==> 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 ==> ==> sh: -q: Ungültige Option ==> Benutzung: sh [Lange GNU Option] [Option] ... ==> sh [Lange GNU Option] [Option] Script-Datei ... ==> Lange GNU Optionen: ==> --debug ==> --debugger ==> --dump-po-strings ==> --dump-strings ==> --help ==> --init-file ==> --login ==> --noediting ==> --noprofile ==> --norc ==> --posix ==> --rcfile ==> --restricted ==> --verbose ==> --version ==> Shell-Optionen: ==> -ilrsD oder -c Kommando oder -O shopt_option (Nur Aufruf) ==> -abefhkmnptuvxBCHP oder Option -o ==> polymake: WARNING: rule _4ti2.hilbert, _4ti2.integer_points: HILBERT_BAS\ IS_GENERATORS : CONE_AMBIENT_DIM , FACETS | INEQUALITIES failed: couldn't\ run 4ti2: -q /tmp/poly22684Taaaa0001 ==> polymake: used package libnormaliz ==> Normaliz is a tool for computations in affine monoids, vector configura\ tions, lattice polytopes, and rational cones. ==> Copyright by Winfried Bruns, Bogdan Ichim, Christof Soeger. ==> http://www.math.uos.de/normaliz/ ==> ==> 0