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We express multiplicities and degree functions of graded families of $\mathfrak{m}_R$-primary ideals in an excellent normal local ring $(R,\mathfrak{m}_R)$ as limits of intersection products. Moreover, in dimension 2, we show more refined…

Commutative Algebra · Mathematics 2025-06-06 Steven Dale Cutkosky , Jonathan Montaño

This is an expository version of our paper [arXiv:1902.07384]. Our aim is to present recent Macaulay2 algorithms for computation of mixed multiplicities of ideals in a Noetherian ring which is either local or a standard graded algebra over…

Commutative Algebra · Mathematics 2023-07-20 Kriti Goel , Vivek Mukundan , Sudeshna Roy , J. K. Verma

Herzog, Huneke, and Srinivasan have conjectured that for any homogeneous $k$-algebra, the multiplicity is bounded above by a function of the maximal degrees of the syzygies and below by a function of the minimal degrees of the syzygies. The…

Commutative Algebra · Mathematics 2007-05-23 Rosa M. Miro-Roig

Let $S$ be a finitely generated standard multigraded algebra over an Artinian local ring $A$; $M$ a finitely generated multigraded $S$-module. This paper answers to the question when mixed multiplicities of $M$ are positive and…

Commutative Algebra · Mathematics 2009-01-27 Nguyen Tien Manh , Duong Quoc Viet

We prove that a classical theorem of McAdam about the analytic spread of an ideal in a Noetherian local ring is true for divisorial filtrations on an excellent local ring $R$ which is either of equicharacteristic zero or of dimension $\le…

Commutative Algebra · Mathematics 2022-07-26 Steven Dale Cutkosky

This paper purposes to characterize Noetherian local rings $(R, \mathfrak{m})$ such that the Chern numbers of certain $\mathfrak{m}$-primary ideals in $R$ bounded above or range among only finitely many values. Consequently, we characterize…

Commutative Algebra · Mathematics 2022-06-13 Hoang Le Truong , Hoang Ngoc Yen

Let $R$ be a Noetherian local ring. We define the minimal $j$-multiplicity and almost minimal $j$-multiplicity of an arbitrary $R$-ideal on any finite $R$-module. For any ideal $I$ with minimal $j$-multiplicity or almost minimal…

Commutative Algebra · Mathematics 2011-01-13 Claudia Polini , Yu Xie

Let (R,m) be an n-dimensional regular local ring, essentially of finite type over a field of characteristic zero. In this paper we study the relationship between the singularities of the scheme defined by an m-primary ideal I of R and the…

Algebraic Geometry · Mathematics 2007-05-23 Tommaso de Fernex

In the present survey paper, we present several new classes of Hochster's spectral spaces "occurring in nature", actually in multiplicative ideal theory, and not linked to or realized in an explicit way by prime spectra of rings. The…

Commutative Algebra · Mathematics 2015-10-16 Carmelo A. Finocchiaro , Marco Fontana , Dario Spirito

In this paper, we investigate the relationship between the index of reducibility and Chern coefficients for primary ideals. As an application, we give characterizations of a Cohen-Macaulay ring in terms of its type, irreducible…

Commutative Algebra · Mathematics 2021-08-26 Nguyen Thi Thanh Tam , Hoang Le Truong

This article focuses on the existence of asymptotic colengths for families of $\fm_{R}$-primary ideals in a Noetherian local ring $(R,\fm)$. In any characteristic, we generalize graded families to weakly graded families of ideals, and in…

Commutative Algebra · Mathematics 2024-10-17 Sudipta Das , Cheng Meng

A primary ideal in a polynomial ring can be described by the variety it defines and a finite set of Noetherian operators, which are differential operators with polynomial coefficients. We implement both symbolic and numerical algorithms to…

Commutative Algebra · Mathematics 2023-01-25 Justin Chen , Yairon Cid-Ruiz , Marc Härkönen , Robert Krone , Anton Leykin

We develop the notions of Newton non-degenerate (NND) ideals and Newton polyhedra for regular local rings. These concepts were first defined in the context of complex analysis. We show that the characterization of NND ideals via their…

Commutative Algebra · Mathematics 2025-05-30 Tài Huy Hà , Thai Thanh Nguyen , Vinh Anh Pham

Let $R$ be a standard graded Noetherian algebra over an Artinian local ring. Motivated by the work of Achilles and Manaresi in intersection theory, we first express the multiplicity of $R$ by means of local $j$-multiplicities of various…

Commutative Algebra · Mathematics 2011-01-13 Yu Xie

In this paper, we prove the converse of Rees' mixed multiplicity theorem for modules, which extends the converse of the classical Rees' mixed multiplicity theorem for ideals given by Swanson - Theorem \ref{SwansonTheorem}. Specifically, we…

Commutative Algebra · Mathematics 2023-10-03 M. D. Ferrari , V. H. Jorge-Perez , L. C. Merighe

In a seminal paper "Volumen und Oberfl\"ache" (1903), Minkowski introduced the basic notion of mixed volumes and the corresponding inequalities that lie at the heart of convex geometry. The fundamental importance of characterizing the…

Metric Geometry · Mathematics 2023-09-18 Yair Shenfeld , Ramon van Handel

We introduce two new invariants of a Noetherian (standard graded) local ring $(R, \mathfrak m)$ that measure the number of generators of certain kinds of reductions of $\mathfrak m,$ and we study their properties. Explicitly, we consider…

Commutative Algebra · Mathematics 2022-05-04 Dylan C. Beck , Souvik Dey

In this paper, an algebraic theory for local rings of finite embedding dimension is developed. Several extensions of (Krull) dimension are proposed, which are then used to generalize singularity notions from commutative algebra. Finally,…

Commutative Algebra · Mathematics 2014-08-27 Hans Schoutens

We prove a theorem on the intersection theory over a Noetherian local ring $R$, which gives a new proof of a classical theorem of Rees about degree functions. To obtain this, we define an intersection product on schemes that are proper and…

Commutative Algebra · Mathematics 2025-03-28 Steven Dale Cutkosky , Jonathan Montaño

Given a local Noetherian ring $(R, {\mathfrak m})$ of dimension $d>0$ and infinite residue field, we study the invariants $($dimension and multiplicity$)$ of the Sally module $S_J(I)$ of any ${\mathfrak m}$-primary ideal $I$ with respect to…

Commutative Algebra · Mathematics 2007-05-23 Alberto Corso