# rank(ToricVectorBundle) -- the rank of the vector bundle

## Description

Returns the rank $k$ of the toric vector bundle in Kaneyama's description.

 i1 : E = tangentBundle projectiveSpaceFan 3 o1 = {dimension of the variety => 3 } number of affine charts => 4 number of rays => 4 rank of the vector bundle => 3 o1 : ToricVectorBundleKlyachko i2 : rank E o2 = 3