[图书][B] Binomial ideals

J Herzog, T Hibi, H Ohsugi - 2018 - Springer
Historically, commutative algebra, whose foundations were laid by Dedekind, Hilbert,
Noether, and Krull, has developed in step with algebraic geometry, number theory …

Koszul algebras and regularity

A Conca, E De Negri, ME Rossi - … papers dedicated to David Eisenbud on …, 2013 - Springer
This is a survey paper on commutative Koszul algebras and Castelnuovo-Mumford
regularity. Koszul algebras, originally introduced by Priddy, are graded K-algebras R whose …

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 …

Isomorphism classes of short Gorenstein local rings via Macaulay's inverse system

J Elias, M Rossi - Transactions of the American Mathematical Society, 2012 - ams.org
Let $ K $ be an algebraically closed field of characteristc zero. In this paper we study the
isomorphism classes of Artinian Gorenstein local $ K $-algebras with socle degree three by …

Free resolutions over short Gorenstein local rings

I Bonacho Dos Anjos Henriques, LM Şega - Mathematische Zeitschrift, 2011 - Springer
Let R be a local ring with maximal ideal m admitting a non-zero element a ∈ m for which the
ideal (0: a) is isomorphic to R/aR. We study minimal free resolutions of finitely generated R …

Quasi-complete intersection homomorphisms

LL Avramov, IB Henriques, LM Şega - arXiv preprint arXiv:1010.2143, 2010 - arxiv.org
Extending a notion defined for surjective maps by Blanco, Majadas, and Rodicio, we
introduce and study a class of homomorphisms of commutative noetherian rings, which …

Free resolutions over short local rings

LL Avramov, SB Iyengar, LM Şega - Journal of the London …, 2008 - academic.oup.com
The structure of minimal free resolutions of finite modules M over commutative local rings (R,
𝔪, k) with 𝔪3= 0 and rank k (𝔪2)< rank k (𝔪/𝔪2) is studied. It is proved that over generic R …

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 …

[HTML][HTML] Poincaré series of modules over compressed Gorenstein local rings

ME Rossi, LM Şega - Advances in Mathematics, 2014 - Elsevier
Given two positive integers e and s we consider Gorenstein Artinian local rings R whose
maximal ideal m satisfies ms≠ 0= m s+ 1 and rank R/m (m/m 2)= e. We say that R is a …

Gröbner bases for spaces of quadrics of low codimension

A Conca - Advances in Applied Mathematics, 2000 - Elsevier
Let R=⊕ i≥ 0Ri be a quadratic standard graded K-algebra. Backelin has shown that R is
Koszul provided dimR2≤ 2. One may wonder whether, under the same assumption, R is …