[A w b] gkz [eq v] [ ] gkz [eq v] array of array of integer A; array of integer w, b; eq is the modified GKZ system defined by the matrix A, weight w, and the parameter b. v is the list of variables. The last variable is the deformation variable. Default values of A and b are in gkz.A and gkz.b For details, see the paper Modified A-hypergeometric system, N.Takayama http://arxiv.org/abs/0707.0043 Example : [ [[1 2 3]] [1 2 1] [0]] mgkz rank :: Example : [ [[1 2 3]] [0]] gkz rank :: Example : [ [[1 1 1] [1 2 3]] [1 2 1] [1 0]] mgkz message