The determinant of a bivariate polynomial matrix is a bivariate polyno-
mial that you know their total degree. The total degree gives us the number
of interpolation points for the evaluation. For the interpolation part of the
technique evaluation{interpolation we use the Newton bivariate interpolation
on a new set of equidistant points in triangular basis and a new numerical
transformation for the representation of the determinant in monomial basis.
The evaluation{interpolation technique that is used in all the interpolation
methods, avoids such kind of problems by using known numerical methods.
More specically, this technique evaluates the values of the polynomial solu-
tion that we are looking for at given interpolation points and then construct
the polynomial solution by using interpolation techniques.