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D.4.18.11 equidim

Procedure from library primdec.lib (see primdec_lib).

Usage:
equidim(i) or equidim(i,1) ; i ideal

Return:
list of equidimensional ideals a[1],...,a[s] with:
- a[s] the equidimensional locus of i, i.e. the intersection of the primary ideals of dimension of i
- a[1],...,a[s-1] the lower dimensional equidimensional loci.

Note:
An embedded component q (primary ideal) of i can be replaced in the decomposition by a primary ideal q1 with the same radical as q.
equidim(i,1) uses the algorithm of Eisenbud/Huneke/Vasconcelos.

Example:
 


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