primaryInvariants G
By default, primaryInvariants uses an optimising algorithm which tests for the existence of a homogeneous system of parameters (hsop) (f1,...,fn) with positive degrees corresponding to (d1,...,dn) in ZZn. If it is known that a hsop exists for a certain collection of degrees, this can be assigned, as a List, to the optional argument DegreeVector. primaryInvariants will then output a hsop corresponding to this list of degrees. If however no such hsop exists, primaryInvariants outputs an error message.
Note that the List assigned to DegreeVector is ignored if Dade is set to true.
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The source of this document is in InvariantRing/HawesDoc.m2:298:0.