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We characterize all graphs whose binomial edge ideals have pure resolutions. Moreover, we introduce a new switching of graphs which does not change some algebraic invariants of graphs, and using this, we study the linear strand of the…

Combinatorics · Mathematics 2014-01-22 Dariush Kiani , Sara Saeedi Madani

When a monomial ideal has linear quotients with respect to an admissible order of increasing support-degree, we provide two proofs of different flavors to show that it is componentwise support-linear. We also introduce the variable…

Commutative Algebra · Mathematics 2014-04-09 Yi-Huang Shen

We consider ideals in a polynomial ring that are generated by regular sequences of homogeneous polynomials and are stable under the action of the symmetric group permuting the variables. In previous work, we determined the possible…

Commutative Algebra · Mathematics 2019-08-15 Federico Galetto , Anthony V. Geramita , David L. Wehlau

The main goal of this article is to introduce BL-rings, i.e., commutative rings whose lattices of ideals can be equipped with a structure of BL-algebra. We obtain a description of such rings, and study the connections between the new class…

Logic · Mathematics 2016-09-20 O. A. Heubo-kwegna , C. Lele , J. B. Nganou

In this note we explore the notion of everywhere almost summing polynomials and define a natural norm which makes this class a Banach multi-ideal which is a holomorphy type (in the sense of L.Nachbin) and also coherent and compatible (in…

Functional Analysis · Mathematics 2015-10-02 Daniel Pellegrino , Joilson Ribeiro

We give a complete characterization of graphs whose binomial edge ideal is licci. An important tool is a new general upper bound for the regularity of binomial edge ideals.

Commutative Algebra · Mathematics 2019-10-10 Viviana Ene , Giancarlo Rinaldo , Naoki Terai

An explicit lattice point realization is provided for the primary components of an arbitrary binomial ideal in characteristic zero. This decomposition is derived from a characteristic-free combinatorial description of certain primary…

Commutative Algebra · Mathematics 2008-03-28 Alicia Dickenstein , Laura Felicia Matusevich , Ezra Miller

We construct a class of positive linear maps on matrix algebras. We find conditions when these maps are atomic, decomposable and completely positive. We obtain a large class of atomic positive linear maps. As applications in quantum…

Operator Algebras · Mathematics 2017-04-25 Xin Li , Wei Wu

In this paper we primarily study monomial ideals and their minimal free resolutions by studying their associated LCM lattices. In particular, we formally define the notion of coordinatizing a finite atomic lattice P to produce a monomial…

Commutative Algebra · Mathematics 2010-09-09 Sonja Mapes

In this paper, we study various properties of matroidal ideals.

Commutative Algebra · Mathematics 2008-02-27 Hung-Jen Chiang-Hsieh , Hsin-Ju Wang

An ideal in a polynomial ring encodes a system of linear partial differential equations with constant coefficients. Primary decomposition organizes the solutions to the PDE. This paper develops a novel structure theory for primary ideals in…

Commutative Algebra · Mathematics 2020-11-20 Yairon Cid-Ruiz , Roser Homs , Bernd Sturmfels

Applying a linearization theorem due to J. Mujica, we study the ideals of bounded holomorphic mappings $\mathcal{H}^\infty\circ\mathcal{I}$ generated by composition with an operator ideal $\mathcal{I}$. The bounded-holomorphic dual ideal of…

Functional Analysis · Mathematics 2023-02-10 M. G. Cabrera-Padilla , A. Jiménez-Vargas , D. Ruiz-Casternado

We classify the closed ideals of bounded operators acting on the Banach spaces $\left(\bigoplus_{n \in \mathbb{N}} \ell_2^n\right)_{c_0} \oplus c_0(\Gamma)$ and $\left(\bigoplus_{n \in \mathbb{N}} \ell_2^n\right)_{\ell_1} \oplus…

Functional Analysis · Mathematics 2020-08-28 Max Arnott , Niels Jakob Laustsen

The objective of this study is to advance the theory concerning positive summing operators. Our focus lies in examining the space of positive strongly p-summable sequences and the space of positive unconditionally p-summable sequences. We…

Functional Analysis · Mathematics 2024-04-29 D. Achour , T. Tiaiba

We introduce and study a special class of ideals, called tropical ideals, in the semiring of tropical polynomials, with the goal of developing a useful and solid algebraic foundation for tropical geometry. The class of tropical ideals…

Algebraic Geometry · Mathematics 2019-02-20 Diane Maclagan , Felipe Rincón

We prove sharp estimates on the quadratic strand of the resolution of any homogeneous prime ideal in a standard graded polynomial ring over an arbitrary field. Our bounds only depend on the height of the prime ideal, and they are optimal…

Commutative Algebra · Mathematics 2026-05-12 Giulio Caviglia , Alessandro De Stefani

Ideals are one of the main topics of interest to the study of the order structure of an algebra. Due to their nice properties, ideals have an important role both in lattice theory and semigroup theory. Two natural concepts of ideal can be…

Rings and Algebras · Mathematics 2013-02-25 Joao Pita Costa

We establish an analogue of the Goldbach conjecture for Laurent polynomials with positive integer coefficients.

Number Theory · Mathematics 2023-12-05 Sophia Liao , Harold Polo

In this paper we study primality and primary decomposition of certain ideals which are generated by homogeneous degree $2$ polynomials and occur naturally from determinantal conditions. Normality is derived from these results.

Commutative Algebra · Mathematics 2019-01-11 Joydip Saha , Indranath Sengupta , Gaurab Tripathi

We record a general asymptotic formula for colon of ideals and proceed to give some applications regarding $m$-full, weakly $m$-full, and full ideals.

Commutative Algebra · Mathematics 2020-11-24 Hailong Dao