Procedure from library curvepar.lib (see curvepar_lib).
Usage:
CurveParam(I);
I ideal
Assume:
I is an ideal of a curve C with a singular point 0.
Compute:
Parametrization for algebraic branches of the curve C.
Return:
list L of size 1.
L[1] is a ring ring rt=0,(t,a),ds;
Ring R contains a list Param
Param is a list of algebraic branches
Each Param[i] is a list of size 3
Param[i][1] is a list of polynomials
Param[i][2] is an irredusible polynomial f\in k[a].It is a minimal polynomial for
the parameter a.
Param[i][3] is an integer b--upper bound for the conductor of Weierstrass semigroup