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localCohom(...,Strategy=>...) -- specify strategy for local cohomology


There are two main strategies, Walther and OaTa. If the user selects Walther, which is the default, then LocStrategy determines the localization strategy for localCohom(...Ideal...) and localCohom(...Ideal, Module...). For detailed description of the algorithms see

Further information


localCohom(...Ideal, Module...) with the default strategy computes presentations for all the terms in the Cech complex regardless of the requested homological degrees. All strategies use the given generators of the ideal; the user is advised to call mingens before calling localCohom.

Functions with optional argument named Strategy :