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D.6.7.2 gmsnf

Procedure from library gmssing.lib (see gmssing_lib).

Usage:
gmsnf(p,K); poly p, int K

Assume:
basering returned by gmsring

Return:
list nf;
ideal nf[1]; projection of p to <gmsbasis>C[[s]] mod s^(K+1) ideal nf[2]; p==nf[1]+nf[2]

Note:
computation can be continued by setting p=nf[2]

Example:
 


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