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7.7.20.0. elimWeight
Procedure from library ncpreim.lib (see ncpreim_lib).

Usage:
elimWeight(v); v an intvec

Assume:
The basering is a G-algebra.
The entries of v are in the range 1..nvars(basering) and the corresponding variables generate an admissible subalgebra.

Return:
intvec, say w, such that the ordering (a(w),<), where < is any admissible global ordering, is an elimination ordering for the subalgebra generated by the variables indexed by the entries of the given intvec.

Note:
If no such ordering exists, the zero intvec is returned.

Remark:
Reference: (BGL), (GML)

Example:
 


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