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There has arisen in recent years a substantial theory of "multiplier ideals'' in commutative rings. These are integrally closed ideals with properties that lend themselves to highly interesting applications. But how special are they among…

Commutative Algebra · Mathematics 2007-05-23 Joseph Lipman , Keiichi Watanabe

In this paper, we extend a result of Eisenbud-Reeves-Totaro in the frame of ideals of Borel type. As a consequence, we obtain a linear upper bound for the regularity of a new class of ideals, called $\mathcal D$-fixed ideals.

Commutative Algebra · Mathematics 2007-05-23 Mircea Cimpoeas

In this paper we study monomial ideals attached to posets, introduce generalized Hibi rings and investigate their algebraic and homological properties. The main tools to study these objects are Groebner basis theory, the concept of…

Commutative Algebra · Mathematics 2015-10-09 Viviana Ene , Juergen Herzog , Fatemeh Mohammadi

The maximal minors of a p by (m + p) matrix of univariate polynomials of degree n with indeterminate coefficients are themselves polynomials of degree np. The subalgebra generated by their coefficients is the coordinate ring of the quantum…

Algebraic Geometry · Mathematics 2007-05-23 Frank Sottile , Bernd Sturmfels

In [4] Sturmfels linked the Hilbert Nullstellensatz to Gr\"obner bases through final polynomials. In (loc. cit.) it was claimed that final polynomials always appear in a lexicographic Gr\"obner basis of a certain ideal. In this paper, we…

Commutative Algebra · Mathematics 2024-05-28 Peter Lundgaard , Andreas Bøgh Poulsen

Let $I = ( f_1, \dots, f_n )$ be a homogeneous ideal in the polynomial ring $K[x_1, \dots,x_n]$ over a field $K$ generated by generic polynomials. Using an incremental approach based on a method by Gao, Guan and Volny, and properties of the…

Commutative Algebra · Mathematics 2017-12-11 Juliane Capaverde , Shuhong Gao

We show that the universal Gr\"obner basis and the Graver basis of a binomial edge ideal coincide. We provide a description for this basis set in terms of certain paths in the underlying graph. We conjecture a similar result for a parity…

Commutative Algebra · Mathematics 2020-04-08 Mourtadha Badiane , Isaac Burke , Emil Sköldberg

The supremum of reduction numbers of ideals having principal reductions is expressed in terms of the integral degree, a new invariant of the ring, which is finite provided the ring has finite integral closure. As a consequence, one obtains…

Commutative Algebra · Mathematics 2007-06-25 José M. Giral , Francesc Planas-Vilanova

We investigate Rees algebras and special fiber rings obtained by blowing up specialized Ferrers ideals. This class of monomial ideals includes strongly stable monomial ideals generated in degree two and edge ideals of prominent classes of…

Commutative Algebra · Mathematics 2016-08-10 Alberto Corso , Uwe Nagel , Sonja Petrović , Cornelia Yuen

The notion of initial ideal for an ideal of a polynomial ring appears in the theory of Gr\"obner basis. Similarly to the initial ideals, we can define the initial algebra for a subalgebra of a polynomial ring, or more generally of a Laurent…

Commutative Algebra · Mathematics 2021-10-19 Shigeru Kuroda

We establish characteristic-free criteria for the componentwise linearity of graded ideals. As applications, we classify the componentwise linear ideals among the Gorenstein ideals, the standard determinantal ideals, and the ideals…

Commutative Algebra · Mathematics 2021-05-18 Uwe Nagel , Tim Roemer

Can one tell if an ideal is radical just by looking at the degrees of the generators? In general, this is hopeless. However, there are special collections of degrees in multigraded polynomial rings, with the property that any multigraded…

Commutative Algebra · Mathematics 2022-03-17 Aldo Conca , Emanuela De Negri , Elisa Gorla

In this paper, we draw a connection between ideal lattices and Gr\"{o}bner bases in the multivariate polynomial rings over integers. We study extension of ideal lattices in $\mathbb{Z}[x]/\langle f \rangle$ (Lyubashevsky \& Micciancio,…

Symbolic Computation · Computer Science 2017-10-10 Maria Francis , Ambedkar Dukkipati

We consider the phylogenetic tree model in which every node of the tree is observed and binary and the transitions are given by the same matrix on each edge of the tree. We are able to compute the Grobner basis and Markov basis of the toric…

Combinatorics · Mathematics 2007-05-23 Nicholas Eriksson

We investigate the minimal number of generators $\mu$ and the depth of divisorial ideals over normal semigroup rings. Such ideals are defined by the inhomogeneous systems of linear inequalities associated with the support hyperplanes of the…

Commutative Algebra · Mathematics 2007-05-23 W. Bruns , J. Gubeladze

We describe the minimal free resolution of the ideal of $2 \times 2$ subpermanents of a $2 \times n$ generic matrix $M$. In contrast to the case of $2 \times 2$ determinants, the $2 \times 2$ permanents define an ideal which is neither…

Commutative Algebra · Mathematics 2024-11-21 Fulvio Gesmundo , Hang , Huang , Hal Schenck , Jerzy Weyman

Here we study the problem of generalizing one of the main tools of Groebner basis theory, namely the flat deformation to the leading term ideal, to the border basis setting. After showing that the straightforward approach based on the…

Commutative Algebra · Mathematics 2007-10-16 Martin Kreuzer , Lorenzo Robbiano

In this work, we provide a necessary and sufficient condition on a polyomino ideal for having the set of inner 2-minors as degree reverse lexicographic Gr\"obner basis, due to combinatorial properties of the polyomino itself. Moreover, we…

Commutative Algebra · Mathematics 2020-05-25 Carla Mascia , Giancarlo Rinaldo , Francesco Romeo

A homogeneous ideal is robust if its universal Gr\"obner basis is also a minimal generating set. For toric ideals, one has the stronger definition: A toric ideal is strongly robust if its Graver basis equals the set of indispensable…

Commutative Algebra · Mathematics 2017-04-03 Seth Sullivant

The main goal of this paper is to prove, in positive characteristic $p$, stability behavior for the graded Betti numbers in the periodic tails of the minimal resolutions of Frobenius powers of the homogeneous maximal ideals for very general…

Commutative Algebra · Mathematics 2023-03-23 Claudia Miller , Hamidreza Rahmati , Rebecca R. G
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