-- -*- M2-comint -*- {* hash: -506077013 *}

i1 : P = crossPolytope 3

o1 = {ambient dimension => 3           }
      dimension of lineality space => 0
      dimension of polyhedron => 3
      number of facets => 8
      number of rays => 0
      number of vertices => 6

o1 : Polyhedron

i2 : p = matrix {{1},{2},{3}}

o2 = | 1 |
     | 2 |
     | 3 |

              3        1
o2 : Matrix ZZ  <--- ZZ

i3 : q = proximum(p,P)

o3 = | 0 |
     | 1 |
     | 0 |

              3        1
o3 : Matrix QQ  <--- QQ

i4 :