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BB.CoeffOfBB

Computes the coefficient matrix of a border basis.
Syntax
          
BB.CoeffOfBB(BB:LIST,OO:LIST):MAT

          

Description
Computes the coefficient matrix of the OO-border basis BB of the ideal generated by the polynomials of BB. The output is a matrix.

Example
Use QQ[x,y];

BB.CoeffOfBB([xy^2, x^3 + xy, y^4, xy^3, x^2y^2, x^3y],
             [1, y, y^2, y^3, x, xy, x^2, x^2y]);

-------------------------------
Mat([
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 1, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0],
  [0, 0, 0, 0, 0, 0]
])
-------------------------------


See Also