i1 : PP3 = projectiveSpace 3; |
i2 : F = fan PP3 o2 = {ambient dimension => 3 } number of generating cones => 4 number of rays => 4 top dimension of the cones => 3 o2 : Fan |
i3 : rays F o3 = {| -1 |, | 0 |, | 0 |, | 1 |} | -1 | | 0 | | 1 | | 0 | | -1 | | 1 | | 0 | | 0 | o3 : List |
i4 : rays PP3 o4 = {{-1, -1, -1}, {1, 0, 0}, {0, 1, 0}, {0, 0, 1}} o4 : List |
i5 : FF2 = hirzebruchSurface 2; |
i6 : F = fan FF2 o6 = {ambient dimension => 2 } number of generating cones => 4 number of rays => 4 top dimension of the cones => 2 o6 : Fan |
i7 : rays F o7 = {| 0 |, | 0 |, | -1 |, | 1 |} | -1 | | 1 | | 2 | | 0 | o7 : List |
i8 : rays FF2 o8 = {{1, 0}, {0, 1}, {-1, 2}, {0, -1}} o8 : List |