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As the binomial edge ideal of a graph is always generated by homogeneous quadratic polynomials corresponding to the edges of the graph, the question of when a binomial edge ideal defines a Koszul algebra has been studied by many authors…

Commutative Algebra · Mathematics 2026-01-22 Adam LaClair , Matthew Mastroeni , Jason McCullough , Irena Peeva

It has been shown previously that a large class of monomial maps equivariant under the action of an infinite symmetric group have finitely generated kernels up to the symmetric action. We prove that these symmetric toric ideals also have…

Commutative Algebra · Mathematics 2016-04-29 Robert Krone

We study existence and computability of finite bases for ideals of polynomials over infinitely many variables. In our setting, variables come from a countable logical structure A, and embeddings from A to A act on polynomials by renaming…

Logic in Computer Science · Computer Science 2026-05-21 Arka Ghosh , Sławomir Lasota

In this article, we explore the class of graphs for which the projective dimension of the quotient of the binomial edge ideals matches the big height of that ideal. Additionally, we investigate the Vasconcelos number of binomial edge ideals…

Commutative Algebra · Mathematics 2025-08-19 Arvind Kumar , Joshua Pomeroy , Le Tran

Let $G$ be a connected and simple graph on the vertex set $[n]$. To the graph $G$ one can associate the generalized binomial edge ideal $J_{m}(G)$ in the polynomial ring $R=K[x_{ij}: i \in [m], j \in [n]]$. We provide a lower bound for the…

Commutative Algebra · Mathematics 2023-11-06 Anargyros Katsabekis

A universal analytic Gr{\"o}bner basis (UAGB) of an ideal of a Tate algebra is a set containing a local Gr{\"o}bner basis for all suitable convergence radii. In a previous article, the authors proved the existence of finite UAGB's for…

Symbolic Computation · Computer Science 2024-01-12 Tristan Vaccon , Thibaut Verron

We study unmixed and Cohen-Macaulay properties of the binomial edge ideal of some classes of graphs. We compute the depth of the binomial edge ideal of a generalized block graph. We also characterize all generalized block graphs whose…

Commutative Algebra · Mathematics 2015-06-04 Dariush Kiani , Sara Saeedi Madani

Let $I_G$ be the binomial edge ideal on the generic 2 x n - Hankel matrix associated with a closed graph $G$ on the vertex set [n]. We characterize the graphs $G$ for which $I_G$ has maximal regularity and is Gorenstein.

Commutative Algebra · Mathematics 2015-12-02 Ahmet Dokuyucu , Ajdin Halilovic , Rida Irfan

In this paper, we investigate the degree of $h$-polynomials of edge ideals of finite simple graphs. In particular, we provide combinatorial formulas for the degree of the $h$-polynomial for various fundamental classes of graphs such as…

Commutative Algebra · Mathematics 2024-08-26 Jennifer Biermann , Selvi Kara , Augustine O'Keefe , Joseph Skelton , Gabriel Sosa

We associate to every graph a linear program for packings of vertex disjoint paths. We show that the optimal primal and dual values of the corresponding integer program are the binomial grade and height of the binomial edge ideal of the…

Commutative Algebra · Mathematics 2023-06-21 Adam LaClair

Given a finite set of closed rational points of affine space over a field, we give a Gr\"obner basis for the lexicographic ordering of the ideal of polynomials which vanish at all given points. Our method is an alternative to the…

Commutative Algebra · Mathematics 2007-05-23 Mathias Lederer

In this study, we investigate the binomial edge ring associated with the skew Ferrers diagram. By employing Sagbi basis theory, we construct a quadratic Gr\"{o}bner basis for its defining ideal. As an application, we prove that this ring is…

Commutative Algebra · Mathematics 2025-08-29 Kuei-Nuan Lin , Yi-Huang Shen

Let G be a finite graph on [n] = {1,2,3,...,n}, X a 2 times n matrix of indeterminates over a field K, and S = K[X] a polynomial ring over K. In this paper, we study about ideals I_G of S generated by 2-minors [i,j] of X which correspond to…

Commutative Algebra · Mathematics 2009-11-16 Masahiro Ohtani

We prove that level binomial edge ideals with regularity 2 and pseudo-Gorenstein binomial edge ideals with regularity 3 are cones, and we describe them completely. Also, we characterize level and pseudo-Gorenstein binomial edge ideals of…

Commutative Algebra · Mathematics 2023-08-11 Giancarlo Rinaldo , Rajib Sarkar

We investigate arithmetic, geometric and combinatorial properties of symmetric edge polytopes. We give a complete combinatorial description of their facets. By combining Gr\"obner basis techniques, half-open decompositions and methods for…

Combinatorics · Mathematics 2019-05-15 Akihiro Higashitani , Katharina Jochemko , Mateusz Michałek

We study almost complete intersection ideals in a polynomial ring, generated by powers of all the variables together with a power of their sum. Our main result is an explicit description of the reduced Gr\"obner bases for these ideals under…

Commutative Algebra · Mathematics 2025-07-01 Filip Jonsson Kling , Samuel Lundqvist , Fatemeh Mohammadi , Matthias Orth

Multiview ideals arise from the geometry of image formation in pinhole cameras, and universal multiview ideals are their analogs for unknown cameras. We prove that a natural collection of polynomials form a universal Gr\"obner basis for…

Commutative Algebra · Mathematics 2025-09-30 Timothy Duff , Jack Kendrick , Rekha R. Thomas

We classify generalized block graphs whose binomial edge ideals admit a unique extremal Betti number. We prove that the Castelnuovo-Mumford regularity of binomial edge ideals of generalized block graphs is bounded below by $m(G)+1$, where…

Commutative Algebra · Mathematics 2021-12-07 Arvind Kumar

We study the family of graphs whose number of primitive cycles equals its cycle rank. It is shown that this family is precisely the family of ring graphs. Then we study the complete intersection property of toric ideals of bipartite graphs…

Commutative Algebra · Mathematics 2011-04-05 Isidoro Gitler , Enrique Reyes , Rafael H. Villarreal

Given a finite simple graph one can associate the edge ideal. In this paper we prove that a graded Betti number of the edge ideal does not vanish if the original graph contains a set of complete bipartite subgraphs with some conditions.…

Commutative Algebra · Mathematics 2014-11-05 Kyouko Kimura