A note on Ratliff-Rush filtration, reduction number and postulation number of -primary ideals

M Mandal, S Priya - arXiv preprint arXiv:2307.01196, 2023 - arxiv.org
Let $(R,\mathfrak m) $ be a Cohen-Macaulay local ring of dimension $ d\geq 2$ and $ I $ an
$\mathfrak m $-primary ideal. Let rd $(I) $ be the reduction number of $ I $ and n $(I) $ the …

On reduction exponents of ideals with Gorenstein formring

M Herrmann, C Huneke, J Ribbe - Proceedings of the Edinburgh …, 1995 - cambridge.org
This paper studies questions connected with when the Rees algebra of an ideal or the
formring of an ideal is Gorenstein. The main results are for ideals of small analytic deviation …

[HTML][HTML] Ratliff–Rush filtration, regularity and depth of higher associated graded modules. Part II

TJ Puthenpurakal - Journal of Pure and Applied Algebra, 2017 - Elsevier
Let (A, m) be a Noetherian local ring, let M be a finitely generated Cohen–Macaulay A-
module of dimension r≥ 2 and let I be an ideal of definition for M. Set LI (M)=⨁ n≥ 0 M/I n+ …

Asymptotic behaviour of Castelnuovo-Mumford regularity

V Kodiyalam - Proceedings of the American Mathematical Society, 2000 - ams.org
Let $ S $ be a polynomial ring over a field. For a graded $ S $-module generated in degree
at most $ P $, the Castelnuovo-Mumford regularity of each of (i) its $ n^{\operatorname {th}} …

Saturation and Castelnuovo–Mumford regularity

I Bermejo, P Gimenez - Journal of Algebra, 2006 - Elsevier
Let I be a homogeneous ideal of the polynomial ring K [x0,…, xn], where K is an arbitrary
field. Avoiding the construction of a minimal graded free resolution of I, we provide effective …

Ratliff-Rush filtration, Hilbert coefficients and reduction number of integrally closed ideals

K Saloni, AK Yadav - Journal of Algebra, 2024 - Elsevier
Let (R, m) be a Cohen-Macaulay local ring of dimension d≥ 3 and I an integrally closed m-
primary ideal. We establish bounds for the third Hilbert coefficient e 3 (I) in terms of the lower …

Vanishing and non-negativity of the first normal Hilbert coefficient

L Ma, PH Quy - arXiv preprint arXiv:2301.13084, 2023 - arxiv.org
Let $(R,\mathfrak {m}) $ be a Noetherian local ring such that $\widehat {R} $ is reduced. We
prove that, when $\widehat {R} $ is $ S_2 $, if there exists a parameter ideal $ Q\subseteq R …

Necessary and sufficient conditions for the Cohen–Macaulayness of form rings

E Hyry - Journal of Algebra, 1999 - Elsevier
LetAbe a Cohen–Macaulay local ring with an infinite residue field and letI⊂ Abe an ideal of
heighth> 0. Supposing that depthA/Inis high enough for certain values ofn, we give in this …

Regularity stabilization for the powers of graded 𝔐-primary ideals

M Chardin - Proceedings of the American Mathematical Society, 2015 - ams.org
This note provides first a generalization of the stabilization result of Eisenbud and Ulrich for
the regularity of powers of an $\mathfrak {m} $-primary ideal to the case of ideals that are not …

Counterexamples to the Eisenbud–Goto regularity conjecture

J McCullough, I Peeva - Journal of the American Mathematical Society, 2018 - ams.org
Our main theorem shows that the regularity of nondegenerate homogeneous prime ideals is
not bounded by any polynomial function of the degree; this holds over any field $ k $. In …