`desing/sing`
Computing the generators of the singular locus of a basic object
coming from the J component of the object.
- Input:
-
- J, N, S, IND, PDER
- the corresponding members of a basic
object and its chart (see section *, and
*).
- Output:
- a list of polynomials generating the subideal of the
singular locus of the basic object, which comes from the J
component.
The output also contains the polynomials indicated by N.