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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

In this article, we study the powers of the generalized binomial edge ideal $\mathcal{J}_{K_m,P_n}$ of a path graph $P_n$. We explicitly compute their regularities and determine the limit of their depths. We also show that these ordinary…

Commutative Algebra · Mathematics 2023-11-01 Yi-Huang Shen , Guangjun Zhu

In this paper, we initiate a systematic study of generalized binomial edge ideals of whisker graphs by working within a substantially broader class of graphs. We extend the notion of generalized corona products, and through this enlarged…

Commutative Algebra · Mathematics 2026-02-10 J Anuvinda , Ranjana Mehta , Kamalesh Saha

In this paper we give new upper bounds on the regularity of edge ideals whose resolutions are k-steps linear; surprisingly, the bounds are logarithmic in the number of variables. We also give various bounds for the projective dimension of…

Commutative Algebra · Mathematics 2011-10-13 Hailong Dao , Craig Huneke , Jay Schweig

Bounds on the Castelnuovo-Mumford regularity of the associated graded modules of k-Buchsbaum modules M are given in terms of k and some other invariants of M.

Commutative Algebra · Mathematics 2020-11-02 Le Xuan Dung

Bounds for the Castelnuovo-Mumford regularity and Hilbert coefficients are given in terms of the arithmetic degree (if the ring is reduced) or in terms of the defining degrees. From this it follows that there exists only a finite number of…

Commutative Algebra · Mathematics 2018-09-21 Lê Tuân Hoa

In this paper we introduce the concept of clique disjoint edge sets in graphs. Then, for a graph $G$, we define the invariant $\eta(G)$ as the maximum size of a clique disjoint edge set in $G$. We show that the regularity of the binomial…

Commutative Algebra · Mathematics 2020-07-21 M. Rouzbahani Malayeri , S. Saeedi Madani , D. Kiani

We present new combinatorial insights into the calculation of (Castelnuovo-Mumford) regularity of graphs.

Combinatorics · Mathematics 2015-03-23 Turker Biyikoglu , Yusuf Civan

This paper gives exact formulas for the regularity of edge ideals of edge-weighted integrally closed trees. In addition, we provide some linear upper bounds on the regularity of powers of such ideals.

Commutative Algebra · Mathematics 2024-03-07 Jiaxin Li , Guangjun Zhu , Shiya Duan

This paper characterizes the Castelnuovo-Mumford regularity by evaluating the initial ideal with respect to the reverse lexicographic order.

Commutative Algebra · Mathematics 2007-05-23 Ngo Viet Trung

Let G be a graph obtained by taking r>=2 paths and identifying all first vertices and identifying all the last vertices. We compute the Castelnuovo--Mumford regularity of the quotient S/I(X), where S is the polynomial ring on the edges of G…

Commutative Algebra · Mathematics 2016-06-29 Antonio Macchia , Jorge Neves , Maria Vaz Pinto , Rafael H. Villarreal

Let $G$ be a simple graph on $n$ vertices, and let $J_G$ denotes the corresponding binomial edge ideal in $S=\mathbb{K}[x_1,\ldots,x_n,y_1,\ldots,y_n]$, where $\mathbb{K}$ is a field. We show that if a vertex satisfies a certain degree…

Commutative Algebra · Mathematics 2025-12-03 Kanoy Kumar Das , Rajiv Kumar , Paramhans Kushwaha

In a 2008 paper, the first author and Van Tuyl proved that the regularity of the edge ideal of a graph G is at most one greater than the matching number of G. In this note, we provide a generalization of this result to any square-free…

Combinatorics · Mathematics 2016-11-17 Huy Tài Hà , Russ Woodroofe

Some recent investigations indicate that for the classification of Cohen-Macaulay binomial edge ideals, it suffices to consider biconnected graphs with some whiskers attached (in short, `block with whiskers'). This paper provides explicit…

Commutative Algebra · Mathematics 2024-09-04 Om Prakash Bhardwaj , Kamalesh Saha

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

In this article we extend a previous definition of Castelnuovo-Mumford regularity for modules over an algebra graded by a finitely generated abelian group. Our notion of regularity is based on Maclagan and Smith's definition, and is…

Commutative Algebra · Mathematics 2012-04-06 Nicolás Botbol , Marc Chardin

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

We prove the regularity conjecture, namely Eisenbud-Goto conjecture, for a normal surface with rational, Gorenstein elliptic and log canonical singularities. Along the way, we bound the regularity for a dimension zero scheme by its Loewy…

Algebraic Geometry · Mathematics 2015-08-11 Wenbo Niu

We give bounds on the Castelnuovo-Mumford regularity of the associated graded module of an arbitrary good filtration and of its fiber cone. These bounds extend previous results of Rossi-Trung-Valla and Linh.

Commutative Algebra · Mathematics 2011-03-18 Le Xuan Dung , Le Tuan Hoa

We prove some inequalities regarding the Castelnuovo--Mumford regularity of symbolic powers and integral closure of powers of monomial ideals.

Commutative Algebra · Mathematics 2024-01-24 S. A. Seyed Fakhari
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