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A.3.5 Handling graded modulesHow to deal with graded modules in SINGULAR is best explained by looking at an example:
A check on degrees ((1), by using the
(2) We may shift degrees by assigning another admissible degree vector.
Note that SINGULAR does not check whether the assigned degree
vector really is admissible. Moreover, note that all assigned
attributes are lost under a type conversion (e.g. from (3) These considerations may be applied when computing data from free resolutions (see Computation of Ext). |
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