  | #### 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 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
      ==>
      ==> 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

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