D.16.2.19 isReflexive

Syntax:

Polymake::isReflexive( polytope p )

Type:

int

Purpose:

1 if p is reflexive, 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[4][4]=1,1,0,0, 1,0,1,0, 1,0,0,1, 1,-1,-1,-1; polytope p = polytopeViaPoints(M); Polymake::isReflexive(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 ==> ==> 1 M=1,2,0,0, 1,0,2,0, 1,0,0,2, 1,-2,-2,-2; p = polytopeViaPoints(M); Polymake::isReflexive(p); ==> 0