## Experimental Mathematics

### Universal Gröbner Bases of Colored Partition Identities

#### Abstract

Associated to any toric ideal are two special generating sets: the universal Gröbner basis and the Graver basis, which encode polyhedral and combinatorial properties of the ideal, or equivalently, its defining matrix. If the two sets coincide, then the complexity of the Graver bases of the higher Lawrence liftings of the toric matrices is bounded.

While a general classification of all matrices for which both sets agree is far from known, we identify all such matrices within two families of nonunimodular matrices, namely, those defining rational normal scrolls and those encoding homogeneous primitive colored partition identities. This also allows us to show that higher Lawrence liftings of matrices with fixed Gröbner and Graver complexities do not preserve equality of the two bases.

The proof of our classification combines computations with the theoretical tool of Graver complexity of a pair of matrices.

#### Article information

Source
Experiment. Math., Volume 21, Issue 4 (2012), 395-401.

Dates
First available in Project Euclid: 20 December 2012

Permanent link to this document
https://projecteuclid.org/euclid.em/1356038822

Mathematical Reviews number (MathSciNet)
MR3004255

Zentralblatt MATH identifier
1259.05195

#### Citation

Bogart, Tristram; Hemmecke, Ray; Petrovíc, Sonja. Universal Gröbner Bases of Colored Partition Identities. Experiment. Math. 21 (2012), no. 4, 395--401. https://projecteuclid.org/euclid.em/1356038822