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We characterize the monomial ideals $I\subset K[x_1,\ldots,x_n]$ with the property that the polarization $I^p$ and $I^{\sigma^n}:=$ the ideal obtained from $I$ by the $n$-th iterated squarefree operator $\sigma$ are isomorphic via a…

Commutative Algebra · Mathematics 2024-05-01 Mircea Cimpoeas

We show that all monomial ideals in the polynomial ring in at most 3 variables are pretty clean and that an arbitrary monomial ideal $I$ is pretty clean if and only if its polarization $I^p$ is clean. This yields a new characterization of…

Commutative Algebra · Mathematics 2007-05-23 Ali Soleyman Jahan

We translate the operations of polarization and depolarization from monomial ideals in a polynomial ring to abstract simplicial complexes. As a result, we explicitly describe the relation between the Koszul simplicial complex of a monomial…

For a monomial ideal $I$ of a polynomial ring $S$, a "polarization" of $I$ is a \textit{squarefree} monomial ideal $J$ of a larger polynomial ring $S'$ such that $S/I$ is a quotient of $S'/J$ by a regular sequence (consisting of degree 1…

Commutative Algebra · Mathematics 2011-11-24 Kohji Yanagawa

We define nice partitions of the multicomplex associated to a Stanley ideal. As the main result we show that if the monomial ideal $I$ is a CM Stanley ideal, then $I^p$ is a Stanley ideal as well, where $I^p$ is the polarization of $I$.

Combinatorics · Mathematics 2009-11-12 Sarfraz Ahmad

In this paper we study the behavior of the size of a monomial ideal under polarization and under generic deformations. As an application, we extend a result relating the size and the Stanley depth of a squarefree monomial ideal obtained by…

Commutative Algebra · Mathematics 2016-02-26 Bogdan Ichim , Andrei Zarojanu

In this paper we consider monomial localizations of monomial ideals and conjecture that a monomial ideal is polymatroidal if and only if all its monomial localizations have a linear resolution. The conjecture is proved for squarefree…

Commutative Algebra · Mathematics 2012-06-15 Somayeh Bandari , Jürgen Herzog

Reduction criteria for distillability is applied to general depolarized states and an explicit condition is found in terms of a characteristic polynomial of the density matrix. 3 $\times$ 3 bipartite systems are analyzed in some details.

Quantum Physics · Physics 2015-06-26 Andrea R. Rossi , Matteo G. A. Paris

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

Let $I\supsetneq J$ be two monomial ideals of a polynomial algebra over a field generated in degree $\geq d$, resp. $\geq d+1$ . We study when the Stanley Conjecture holds for $I/J$ using the recent result of \cite{IKM} concerning the…

Commutative Algebra · Mathematics 2014-04-25 Dorin Popescu

We study monomial ideals using the operation polarization to first turn them into square-free monomial ideals. We focus on monomial ideals whose polarization produce simplicial trees, and show that many of the properties of simplicial trees…

Commutative Algebra · Mathematics 2017-03-13 Sara Faridi

Studying and understanding social networks is crucial for accurately defining ideological polarization, since they enable precise modeling of social structures. One of the limitations of many methods for quantifying polarization on networks…

Social and Information Networks · Computer Science 2025-05-09 Christian Weidemann

We present a family of 3--qubit states to which any arbitrary state can be depolarized. We fully classify those states with respect to their separability and distillability properties. This provides a sufficient condition for…

Quantum Physics · Physics 2009-01-23 W. Dür , J. I. Cirac , R. Tarrach

In this paper, we study different polarizations of powers of the maximal ideal m^d, and polarizations of its related square-free version I_d. For n = 3, we show that every minimal free cellular resolution of m^d comes from a certain…

Commutative Algebra · Mathematics 2013-04-05 Henning Lohne

In this paper we use polarization to study the behavior of the depth and regularity of a monomial ideal $I$, locally at a variable $x_i$, when we lower the degree of all the highest powers of the variable $x_i$ occurring in the minimal…

Commutative Algebra · Mathematics 2019-04-04 Jose Martínez-Bernal , Susan Morey , Rafael H. Villarreal , Carlos E. Vivares

In this paper we review different definitions that multi-state $k$-out-of-$n$ systems have received along the literature and study them in a unified way using the algebra of monomial ideals. We thus obtain formulas and algorithms to compute…

Commutative Algebra · Mathematics 2020-04-14 Patricia Pascual-Ortigosa , Eduardo Sáenz-de-Cabezón , Henry P. Wynn

We give a complete combinatorial characterization of all possible polarizations of powers of the graded maximal ideal $(x_1,x_2,\cdots,x_m)^n$ of a polynomial ring in $m$ variables. We also give a combinatorial description of the Alexander…

Commutative Algebra · Mathematics 2020-11-10 Ayah Almousa , Gunnar Fløystad , Henning Lohne

We study a generalization of the classical correspondence between homogeneous quadratic polynomials, quadratic forms, and symmetric/alternating bilinear forms to forms in $n$ variables. The main tool is combinatorial polarization, and the…

Number Theory · Mathematics 2015-09-21 Aleš Drápal , Petr Vojtěchovský

We study families of positive and completely positive maps acting on a bipartite system $\mathbb{C}^M\otimes \mathbb{C}^N$ (with $M\leq N$). The maps have a property that when applied to any state (of a given entanglement class) they result…

The present paper studies multiple failure and signature analysis of coherent systems using the theory of monomial ideals. While system reliability has been studied using Hilbert series of monomial ideals, this is not enough to understand…

Commutative Algebra · Mathematics 2015-10-16 Fatemeh Mohammadi , Eduardo Sáenz-de-Cabezón , Henry P. Wynn
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