It is not clear to me what you want. We have domain 'PolynomialIdeal'
which represents ideals in a polynomial ring. Do you want a
function to determine if an ideal (that is element of PolynomialIdeal)
is a maximal ideal? ATM I do not see any. In ring of polynomials
over algebraically closed field checking if an ideal is maximal is
quite easy. In general it is more tricky, but probably we could add
such a function.
--
Waldek Hebisch