Computing inhomogeneous Gröbner bases

  • Authors:
  • A. M. Bigatti;M. Caboara;L. Robbiano

  • Affiliations:
  • Dipartimento di Matematica, Università di Genova, Italy;Dipartimento di Matematica Leonida Tonelli, Università di Pisa, Italy;Dipartimento di Matematica, Università di Genova, Italy

  • Venue:
  • Journal of Symbolic Computation
  • Year:
  • 2011

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Abstract

In this paper we describe how an idea centered on the concept of self-saturation allows several improvements in the computation of Grobner bases via Buchberger's Algorithm. In a nutshell, the idea is to extend the advantages of computing with homogeneous polynomials or vectors to the general case. When the input data are not homogeneous, we use as a main tool the procedure of a self-saturating Buchberger's Algorithm. Another strictly related topic is treated later when a mathematical foundation is given to the sugar trick which is nowadays widely used in most of the implementations of Buchberger's Algorithm. A special emphasis is also given to the case of a single grading, and subsequently some timings and indicators showing the practical merits of our approach.