A.3.9 Primary decomposition
There are two algorithms implemented in SINGULAR which provide
primary decomposition: primdecGTZ , based on
Gianni/Trager/Zacharias (written by Gerhard Pfister) and
primdecSY , based on Shimoyama/Yokoyama (written by Wolfram Decker
and Hans Schoenemann).
The result of primdecGTZ and primdecSY is returned as
a list of pairs of ideals,
where the second ideal is the prime ideal and the first
ideal the corresponding primary ideal.
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