Usage:
<points pointsmat result
Computes the ideal of a set of points specified
in the matrix pointsmat.
Example of a pointsmat for 3 points in the line
0 1 1
1 1 0
Parameters:
pointsmat = (r+1) x n matrix of scalars to
specify n points in Pr.
Output values:
result = ideal of the points
It is assumed that the ring over which pointsmat
is defined has at least r+1 variables. If
the number of variables is >r+1, the first
r+1 are used.