Top
Back: componentEHV
Forward: compareLists
FastBack: cisimplicial_lib
FastForward: elim_lib
Up: ehv_lib
Top: Singular Manual
Contents: Table of Contents
Index: Index
About: About this document

D.4.5.13 primdecEHV

Procedure from library ehv.lib (see ehv_lib).

Usage:
primdecEHV(I [,Strategy]); I ideal, Strategy list

Return:
a list pr of primary ideals and their associated primes: pr[i][1] the i-th primary component,
pr[i][2] the i-th prime component.

Note:
Algorithm of Eisenbud/Huneke/Vasconcelos.
The (optional) second argument determines the strategy used: Strategy[1] > strategy for equidimensional part
= 0 : uses equiMaxEHV
= 1 : uses equidimMax
Strategy[2] > strategy for equidimensional radical = 0 : uses equiRadEHV, resp. radicalEHV
= 1 : uses equiRadical, resp. radical
Strategy[3] > strategy for equiRadEHV
= 0 : combination of strategy 1 and 2
= 1 : computation of the radical just with the
help of regular sequences
= 2 : does not try to find a regular sequence
Strategy[4] > strategy for the computation of ideal quotients = n : uses quot(.,.,n) for the ideal quotient computations If no second argument is given then Strategy=(0,0,0,0) is used.

Example:
 


Top Back: componentEHV Forward: compareLists FastBack: cisimplicial_lib FastForward: elim_lib Up: ehv_lib Top: Singular Manual Contents: Table of Contents Index: Index About: About this document
            User manual for Singular version 3-1-7, Aug 2013, generated by texi2html.