-- -*- M2-comint -*- {* hash: 424812887 *}

i1 : C = intersection(matrix{{1,1,-1},{-1,-1,-1}})

o1 = {ambient dimension => 3           }
      dimension of lineality space => 1
      dimension of the cone => 3
      number of facets => 2
      number of rays => 2

o1 : Cone

i2 : isPointed C

o2 = false

i3 : C = intersection{C,(matrix{{1,-1,-1}},0)}

o3 = {ambient dimension => 3           }
      dimension of lineality space => 0
      dimension of the cone => 3
      number of facets => 3
      number of rays => 3

o3 : Cone

i4 : isPointed C

o4 = true

i5 :