[HTML][HTML] Bounds on the regularity and projective dimension of ideals associated to graphs

H Dao, C Huneke, J Schweig - Journal of Algebraic Combinatorics, 2013 - Springer
In this paper, we give new upper bounds on the regularity of edge ideals whose resolutions
are k-step linear; surprisingly, the bounds are logarithmic in the number of variables. We …

[HTML][HTML] Subadditivity of syzygies of Koszul algebras

LL Avramov, A Conca, SB Iyengar - Mathematische Annalen, 2015 - Springer
Estimates are obtained for the degrees of minimal syzygies of quotient algebras of
polynomial rings. For a class that includes Koszul algebras in almost all characteristics …

Koszul algebras and their syzygies

A Conca, S Di Rocco, J Draisma, J Huh… - … Geometry: Levico Terme …, 2014 - Springer
A Koszul algebra R is a N-graded K-algebra whose residue field K has a linear free
resolution as an R-module. We present various characterizations of Koszul algebras and …

Infinite graded free resolutions

J McCullough, I Peeva - Commutative algebra and …, 2015 - books.google.com
This paper is an expanded version of three talks given by I. Peeva during the Introductory
Workshop in Commutative Algebra at MSRI in August 2013. It is a survey on infinite graded …

On the subadditivity problem for maximal shifts in free resolutions

J Herzog, H Srinivasan - Commutative algebra and …, 2015 - books.google.com
On the subadditivity problem for maximal shifts in free resolutions Page 256 Commutative
Algebra and Noncommutative Algebraic Geometry, II MSRI Publications Volume 68, 2015 …

A note on the subadditivity of syzygies

S El Khoury, H Srinivasan - Journal of Algebra and its Applications, 2017 - World Scientific
Let R= S/I be a graded algebra with ti and T i being the minimal and maximal shifts in the
minimal graded free resolution of R at degree i. We prove that tn≤ t 1+ T n− 1 for all n. As a …

Candidates for non-zero Betti numbers of monomial ideals

AAY Pour - arXiv preprint arXiv:1507.07188, 2015 - arxiv.org
Let $ I $ be a monomial ideal in the polynomial ring $ S $ generated by elements of degree
at most $ d $. In this paper, it is shown that, if the $ i $-th syzygy of $ I $ has no element of …

Designer ideals with high Castelnuovo-Mumford regularity

B Ullery - arXiv preprint arXiv:1305.5966, 2013 - arxiv.org
The purpose of this paper is to give a simple geometric construction of ideals whose
Castelnuovo-Mumford regularity is large compared to the generating degree. Moreover, our …

Non-simplicial decompositions of Betti diagrams of complete intersections

C Gibbons, J Jeffries, S Mayes, C Raicu, B Stone… - Journal of Commutative …, 2015 - JSTOR
We investigate decompositions of Betti diagrams over a polynomial ring within the
framework of Boij-Söderberg theory. That is, given a Betti diagram, we decompose it into …

Multigraded minimal free resolutions of simplicial subclutters

M Bigdeli, AAY Pour - Journal of Combinatorial Theory, Series A, 2021 - Elsevier
This paper concerns the study of a class of clutters called simplicial subclutters. Given a
clutter C and its simplicial subclutter D, we compare some algebraic properties and …