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D.6.9.15 stripHNE

Procedure from library hnoether.lib (see hnoether_lib).

Usage:
stripHNE(L); L list

Assume:
L is the output of develop(f), or of extdevelop(develop(f),n), or (one entry of) the list hne in the ring created by hnexpansion(f[,"ess"]).

Return:
list in the same format as L, but all polynomials L[4], resp. L[i][4], are set to zero.

Note:
The purpose of this procedure is to remove huge amounts of data no longer needed. It is useful, if one or more of the polynomials in L consume much memory. It is still possible to compute invariants, parametrizations etc. with the stripped HNE(s), but it is not possible to use extdevelop with them.

Example:
 
See also: develop; extdevelop; hnexpansion.


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