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In this paper we define and explore properties of mixed multiplicities of (not necessarily Noetherian) filtrations of $m_R$-primary ideals in a Noetherian local ring $R$, generalizing the classical theory for $m_R$-primary ideals. We…

Commutative Algebra · Mathematics 2019-01-23 Steven Dale Cutkosky , Parangama Sarkar , Hema Srinivasan

We develop a theory of multiplicities and mixed multiplicities of filtrations, extending the theory for filtrations of $m$-primary ideals to arbitrary (not necessarily Noetherian) filtrations. The mixed multiplicities of $r$ filtrations on…

Commutative Algebra · Mathematics 2021-02-17 Steven Dale Cutkosky , Parangama Sarkar

The theory of mixed multiplicities of filtrations by $m$-primary ideals in a ring is introduced in a recent paper by Cutkosky, Sarkar and Srinivasan. In this paper, we consider the positivity of mixed multiplicities of filtrations. We show…

Commutative Algebra · Mathematics 2019-05-07 Steven Dale Cutkosky , Hema Srinivasan , Jugal Verma

Suppose that R is an analytically irreducible or excellent local domain with maximal ideal m_R. We consider multiplicities and mixed multiplicities of R by filtrations of m_R-primary ideals. We show that the theorem of Teissier, Rees and…

Commutative Algebra · Mathematics 2021-01-18 Steven Dale Cutkosky

Let $R$ be a $d$-dimensional Noetherian local ring with maximal ideal $m_R$. In this article, we give a generalization of the multiplicity $e(I)$ of an $m_R$-primary ideal $I$ of $R$ to a multiplicity $e(\mathcal I)$ of a graded family of…

Commutative Algebra · Mathematics 2026-03-24 Steven Dale Cutkosky

Suppose that $R$ is an excellent local domain with maximal ideal $m_R$. The theory of multiplicities and mixed multiplicities of $m_R$-primary ideals extends to (possibly non Noetherian) filtrations of $R$ by $m_R$-primary ideals, and many…

Commutative Algebra · Mathematics 2019-05-07 Steven Dale Cutkosky

The notion of epsilon multiplicity was originally defined by Ulrich and Validashti as a limsup and they used it to detect integral dependence of modules. It is important to know if it can be realized as a limit. In this article we show that…

Commutative Algebra · Mathematics 2021-09-28 Suprajo Das

Let $(A, \frak m)$ be a noetherian local ring with maximal ideal $\frak{m}$ and infinite residue field $k = A/\frak{m}.$ Let $J$ be an $\frak m$-primary ideal, $I_1,...,I_s$ ideals of $A$, and $M$ a finitely generated $A$-module. In this…

Commutative Algebra · Mathematics 2012-08-01 Duong Quoc Viet , Le Van Dinh , Truong Thi Hong Thanh

Let $(R,\mathfrak{m})$ be a Noetherian local ring and $M$ a finitely generated $R$-module. We study the relations of the index of reducibility and the irreducible multiplicity of an $\mathfrak{m}$-primary ideal of $R$ and these of…

Commutative Algebra · Mathematics 2025-09-23 Tran Nguyen An

Let R be the local ring of a point on a variety X over an algebraically closed field k. We make a connection between the notion of mixed (Samuel) multiplicity of m-primary ideals in R and intersection theory of subspaces of rational…

Algebraic Geometry · Mathematics 2015-05-14 Kiumars Kaveh , A. G. Khovanskii

Let S be a finitely generated standard multi-graded algebra over a Noetherian local ring A. This paper first expresses mixed multiplicities of S in term of Hilbert-Samuel multiplicity that explained the mixed multiplicities S as the…

Commutative Algebra · Mathematics 2009-02-10 Duong Quoc Viet , Truong Thi Hong Thanh

Let $(R, \mathfrak m)$ be a Noetherian local ring. In this work we extend the notion of mixed multiplicities of modules, given in \cite{Kleiman-Thorup2} and \cite{Kirby-Rees1} (see also \cite{Bedregal-Perez}), to an arbitrary family…

Commutative Algebra · Mathematics 2011-09-26 R. Callejas-Bedregal , V. H. Jorge Pérez

In this exposition of the equality and inequality of Minkowski for multiplicity of ideals, we provide simple algebraic and geometric proofs. Connections with mixed multiplicities of ideals are explained.

Commutative Algebra · Mathematics 2019-10-10 Kriti Goel , R. V. Gurjar , J. K. Verma

We present a package 'MixedMultiplicity' for computing mixed multiplicities of ideals in a Noetherian ring which is either local or a standard graded algebra over a field. This enables us to find mixed volumes of convex lattice polytopes…

Commutative Algebra · Mathematics 2023-08-30 Kriti Goel , Vivek Mukundan , Sudeshna Roy , J. K. Verma

Let $(R, \mathfrak m)$ be a Noetherian local ring and $I$ a $\mathfrak m$-primary ideal. In this paper, we study an inequality involving the number of generators, the Loewy length and the multiplicity of $I$. There is strong evidence that…

Commutative Algebra · Mathematics 2018-02-13 Hailong Dao , Ilya Smirnov

In this article, we extend the notion of multiplicity for weakly graded families of ideals which are bounded below linearly. In particular, we show that the limit $e_W(\mathfrak{I}):=\lim\limits_{n\to\infty}d!\frac{\ell_R(R/I_n)}{n^d}$…

Commutative Algebra · Mathematics 2025-05-21 Parangama Sarkar

We prove that the multiplicity of a filtration of a local ring satisfies various convexity properties. In particular, we show the multiplicity is convex along geodesics. As a consequence, we prove that the volume of a valuation is log…

Algebraic Geometry · Mathematics 2024-03-22 Harold Blum , Yuchen Liu , Lu Qi

We prove the following result, which is motivated by the recent work of Kurano and Roberts on Serre's positivity conjecture. Assume that (R,m) is a local ring with finitely-generated module M such that R/ann(M) is quasi-unmixed and contains…

Commutative Algebra · Mathematics 2007-05-23 Sean Sather-Wagstaff

Let $(R, {\mathfrak m})$ be a Noetherian local ring and let $I$ be an ${\mathfrak m}$-primary ideal. In this paper we give sharp bounds on the multiplicity of the special fiber ring ${\mathcal F}$ of $I$ in terms of other well-known…

Commutative Algebra · Mathematics 2007-05-23 Alberto Corso , Claudia Polini , Wolmer V. Vasconcelos

The Chern numbers of the title are the first coefficients (after the multiplicities) of the Hilbert functions of various filtrations of ideals of a local ring $(R, \mathfrak{m})$. For a Noetherian (good) filtration $\mathcal{A}$ of…

Commutative Algebra · Mathematics 2012-05-22 Wolmer V. Vasconcelos
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