Difference between revisions of "ApCoCoA-1:CharP.GBasisModSquares"
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Revision as of 12:09, 22 October 2007
$char2.GBasisModSquares
computing a gbasis of a given ideal, intersected with x^2-x for all indeterminates x
Syntax
$char2.GBasisModSquares(Ideal):List
Description
This function returns reduced Groebner basis for the ideal, intersected with the ideal, created by x^2-x for all indeterminates. If x^2-x for
all indeterminates is in the ideal (e.g. the set of zeros is a subset of {0,1}^n) this method should produce the GBasis much faster!
Please be aware, that this is much more efficient if the term ordering is Lex, DegLex or DegRevLex. Otherwise, first a DegRevLex GBasis is computed and then transformed with the FGLM-algorithm.
See also
