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ToricVectorBundles :: fan(ToricVectorBundle)

fan(ToricVectorBundle) -- the underlying fan of a toric vector bundle

Synopsis

Description

Returns the fan of the underlying toric variety. This is an object of the package Polyhedra. See also Fan.

i1 : E = tangentBundle hirzebruchFan 3

o1 = {dimension of the variety => 2 }
      number of affine charts => 4
      number of rays => 4
      rank of the vector bundle => 2

o1 : ToricVectorBundleKlyachko
i2 : F = fan E

o2 = F

o2 : Fan
i3 : rays F

o3 = | 1 0  0 -1 |
     | 0 -1 1 3  |

              2        4
o3 : Matrix ZZ  <--- ZZ

See also