Singular Manual: sagbi_lib

> | ### D.4.34 sagbi_lib Library: sagbi.lib Purpose: Compute SAGBI basis (subalgebra bases analogous to Groebner bases for ideals) of a subalgebra Authors: Jan Hackfeld, Jan.Hackfeld@rwth-aachen.de Gerhard Pfister, pfister@mathematik.uni-kl.de Viktor Levandovskyy, levandov@math.rwth-aachen.de Overview: SAGBI stands for 'subalgebra bases analogous to Groebner bases for ideals'. SAGBI bases provide important tools for working with finitely presented subalgebras of a polynomial ring. Note, that in contrast to Groebner bases, SAGBI bases may be infinite. References: Ana Bravo: Some Facts About Canonical Subalgebra Bases, MSRI Publications 51, p. 247-254 Procedures:
> D.4.34.1 sagbiSPoly |  | computes SAGBI S-polynomials of A
> D.4.34.2 sagbiReduce |  | performs subalgebra reduction of I by A
> D.4.34.3 sagbi |  | computes SAGBI basis for A
> D.4.34.4 sagbiPart |  | computes partial SAGBI basis for A
> D.4.34.5 algebraicDependence |  | performs iterations of SAGBI for algebraic dependencies of I
See also: algebra_lib.

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