A combinatorial criterion for the toric ideal arising from a finite graph to be generated by quadratic binomials is studied. Such a criterion guarantees that every Koszul algebra generated by squarefree quadratic monomials is normal. We present an example of a normal non-Koszul squarefree semigroup
Computing Toric Ideals
β Scribed by A.M. Bigatti; R. La Scala; L. Robbiano
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 478 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0747-7171
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β¦ Synopsis
Toric ideals are binomial ideals which represent the algebraic relations of sets of power products. They appear in many problems arising from different branches of mathematics. In this paper, we develop new theories which allow us to devise a parallel algorithm and an efficient elimination algorithm. In many respects they improve existing algorithms for the computation of toric ideals.
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