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D.4.7.4 depth

Procedure from library homolog.lib (see homolog_lib).

Usage:
depth(M,[I]); M module, I ideal

Return:
int,
- if called with 1 argument: the depth of M'=coker(M) w.r.t. the maxideal in the basering (which is then assumed to be local)
- if called with 2 arguments: the depth of M'=coker(M) w.r.t. the ideal I.

Note:
procedure makes use of KoszulHomology.

Example:
 


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