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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

There are many connections between the invariants of the different powers of an ideal. We investigate how to construct minimal resolutions for all powers at once using methods from algebraic and polyhedral topology with a focus on ideals…

Commutative Algebra · Mathematics 2013-11-19 Alexander Engstrom , Patrik Noren

An explicit combinatorial minimal free resolution of an arbitrary monomial ideal $I$ in a polynomial ring in $n$ variables over a field of characteristic $0$ is defined canonically, without any choices, using higher-dimensional…

Commutative Algebra · Mathematics 2020-05-25 John Eagon , Ezra Miller , Erika Ordog

We show that the cobordism class of a polarization of Hodge module defines a natural transformation from the Grothendieck group of Hodge modules to the cobordism group of self-dual bounded complexes with real coefficients and constructible…

Algebraic Geometry · Mathematics 2022-04-20 Javier Fernández de Bobadilla , Irma Pallarés , Morihiko Saito

We introduce and investigate multicomplex configurations, a class of projective varieties constructed via specialization of the polarizations of Artinian monomial ideals. Building upon geometric polarization and geometric vertex…

Commutative Algebra · Mathematics 2025-07-15 Patricia Klein , Jenna Rajchgot , Alexandra Seceleanu

For a given number field $K$, we show that the ranks of nonsingular elliptic curves over $K$ are uniformly finitely bounded if and only if weak Mordell-Weil property holds in all(some) ultrpowers $^*K$ of $K$. Also we introduce Nonstandard…

Logic · Mathematics 2016-01-19 Junguk Lee

We construct a convergent family of outer approximations for the problem of optimizing polynomial functions over convex bodies subject to polynomial constraints. This is achieved by generalizing the polarization hierarchy, which has…

Optimization and Control · Mathematics 2024-06-17 Martin Plávala , Laurens T. Ligthart , David Gross

In this paper, we study the two natural polarizations, namely the standard polarization and the box polarization, of the d-th power of the maximal ideal in a polynomial ring. We show that these polarizations correspond to smooth points in…

Commutative Algebra · Mathematics 2013-03-27 Henning Lohne

Finding point configurations, that yield the maximum polarization (Chebyshev constant) is gaining interest in the field of geometric optimization. In the present article, we study the problem of unconstrained maximum polarization on compact…

Optimization and Control · Mathematics 2023-03-20 Jan Rolfes , Robert Schüler , Marc Christian Zimmermann

Motivated by resource allocation problems (RAPs) in power management applications, we investigate solutions to optimization problems that simultaneously minimize an entire class of objective functions. It is straightforward to show…

Optimization and Control · Mathematics 2023-02-28 Martijn H. H. Schoot Uiterkamp

We prove several combinatorial results on path algebras over discrete structures related to directed graphs. These results are motivated by Morse theory on a manifold with boundary and, more generally, by Floer theory on a configuration…

Geometric Topology · Mathematics 2013-01-01 Jonathan M. Bloom

In this paper, we propose a uniform approach to tackle problems about squarefree monomial ideals whose powers have good properties. We employ this approach to achieve a twofold goal: (i) recover and extend several well--known results in the…

Commutative Algebra · Mathematics 2025-05-26 Justin Lyle , Paolo Mantero

We construct an Eliahou-Kervaire-like minimal free resolution of the alternative polarization $b-pol(I)$ of a Borel fixed ideal $I$. It yields new descriptions of the minimal free resolutions of $I$ itself and $I^sq$, where $(-)^sq$ is the…

Commutative Algebra · Mathematics 2012-11-07 Ryota Okazaki , Kohji Yanagawa

Grothendieck's theory of blended extensions (extensions panach\'ees) gives a natural framework to study 3-step filtrations in abelian categories. We give a generalization of this theory that is suitable for filtrations with an arbitrary…

Algebraic Geometry · Mathematics 2025-06-23 Payman Eskandari

We use discrete Morse theory to study free resolutions of monomial ideals in combination with splitting techniques. We establish the minimality of such pruned resolutions for several classes of ideals, including stable and linear quotient…

Commutative Algebra · Mathematics 2025-02-05 Josep Àlvarez Montaner , María Lucía Aparicio García , Amir Mafi

This paper presents the linearised Boltzmann equation for photons for scalar, vector and tensor perturbations in flat, open and closed FLRW cosmologies. We show that E- and B-mode polarisation for all types can be computed using only a…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Thomas Tram , Julien Lesgourgues

We prove new upper bounds for the degrees in Hilbert's Nullstellensatz and for the Noether exponent of polynomial ideals in terms of the monomial structure of the polynomials involved. Our bounds improve the previously known bounds in the…

Algebraic Geometry · Mathematics 2019-07-02 Maria Isabel Herrero , Gabriela Jeronimo , Juan Sabia

Chessboard complexes and their generalizations, as objects, and Discrete Morse theory, as a tool, are presented as a unifying theme linking different areas of geometry, topology, algebra and combinatorics. Edmonds and Fulkerson bottleneck…

Metric Geometry · Mathematics 2020-03-10 Duško Jojić , Gaiane Panina , Siniša T. Vrećica , Rade T. Živaljević

We generalize Buchsbaum and Eisenbud's resolutions for the powers of the maximal ideal of a polynomial ring to resolve powers of the homogeneous maximal ideal over graded Koszul algebras. Our approach has the advantage of producing…

Let $S=K[x_1,\ldots,x_n]$ be the polynomial ring over a field and $A$ a standard graded $S$-algebra. In terms of the Gr\"obner basis of the defining ideal $J$ of $A$ we give a condition, called the x-condition, which implies that all graded…

Commutative Algebra · Mathematics 2020-10-23 Jürgen Herzog , Takayuki Hibi , Somayeh Moradi
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