-- -*- M2-comint -*- {* hash: -469234773 *}

i1 : F = hirzebruch 3

o1 = {ambient dimension => 2         }
      number of generating cones => 4
      number of rays => 4
      top dimension of the cones => 2

o1 : Fan

i2 : apply(genCones F,rays)

o2 = {| 0  -1 |, | 1 0  |, | 1 0 |, | 0 -1 |}
      | -1 3  |  | 0 -1 |  | 0 1 |  | 1 3  |

o2 : List

i3 :