[HTML][HTML] Bounds on the regularity and projective dimension of ideals associated to graphs
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
Castelnuovo-Mumford regularity is large compared to the generating degree. Moreover, our …
Non-simplicial decompositions of Betti diagrams of complete intersections
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 …
framework of Boij-Söderberg theory. That is, given a Betti diagram, we decompose it into …
Multigraded minimal free resolutions of simplicial subclutters
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 …
clutter C and its simplicial subclutter D, we compare some algebraic properties and …