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q-Matroids form the q-analogue of classical matroids. In this paper we introduce various types of maps between q-matroids. These maps are not necessarily linear, but they map subspaces to subspaces and respect the q-matroid structure in…

组合数学 · 数学 2023-03-14 Heide Gluesing-Luerssen , Benjamin Jany

In this paper, we investigate the relation between a $q$-matroid and its associated matroid called the projectivization matroid. The latter arises by projectivizing the groundspace of the $q$-matroid and considering the projective space as…

组合数学 · 数学 2022-05-06 Benjamin Jany

We study paving matroids, their realization spaces, and their closures, along with matroid varieties and circuit varieties. Within this context, we introduce three distinct methods for generating polynomials within the associated ideals of…

代数几何 · 数学 2026-03-24 Emiliano Liwski , Fatemeh Mohammadi

Over a finite field $\mathbb{F}_{q^m}$, the evaluation of skew polynomials is intimately related to the evaluation of linearized polynomials. This connection allows one to relate the concept of polynomial independence defined for skew…

信息论 · 计算机科学 2016-10-26 Siyu Liu , Felice Manganiello , Frank R. Kschischang

The Rank Minimization Problem asks to find a matrix of lowest rank inside a linear variety of the space of n x n matrices. The Low Rank Matrix Completion problem asks to complete a partially filled matrix such that the resulting matrix has…

数值分析 · 计算机科学 2015-01-13 Harm Derksen

In this work we present an algorithm to construct sparse-paving matroids over finite set $S$. From this algorithm we derive some useful bounds on the cardinality of the set of circuits of any Sparse-Paving matroids which allow us to prove…

组合数学 · 数学 2018-10-18 B. Mederos , M. Takane , G. Tapia-Sanchez , B. Zavala

A matroid is a combinatorial structure that captures and generalizes the algebraic concept of linear independence under a broader and more abstract framework. Matroids are closely related with many other topics in discrete mathematics, such…

组合数学 · 数学 2022-03-16 Gianira N. Alfarano , Karan Khathuria , Simran Tinani

The problem of finding the minimum rank of a matrix with a given zero-nonzero pattern has been generalized to a class of matroids associated to the pattern. The fundamental lower bound known as the triangle number still holds in this…

组合数学 · 数学 2025-11-06 Louis Deaett , Kevin Grace

The foundation of a matroid is a canonical algebraic invariant which classifies representations of the matroid up to rescaling equivalence. Foundations of matroids are pastures, a simultaneous generalization of partial fields and…

组合数学 · 数学 2020-08-04 Matthew Baker , Oliver Lorscheid

The Topological Representation Theorem for (oriented) matroids states that every (oriented) matroid can be realized as the intersection lattice of an arrangement of codimension one homotopy spheres on a homotopy sphere. In this paper, we…

组合数学 · 数学 2015-03-19 Matthew T. Stamps

Matrices are very popular and widely used in mathematics and other fields of science. Every mathematician has known the properties of finite-sized matrices since the time of study. In this paper, we consider the basic theory of infnite…

综合数学 · 数学 2021-08-19 Lukasz Matysiak , Weronika Przewozniak , Natalia Rulinska

Finite matroids are combinatorial structures that express the concept of linear independence. In 1964, G.-C. Rota conjectured that the coefficients of the "characteristic polynomial" of a matroid $M$, polynomial whose coefficients enumerate…

代数几何 · 数学 2023-03-03 Antoine Chambert-Loir

This educational article highlights the geometric and algebraic complexities that distinguish tensors from matrices, to supplement coverage in advanced courses on linear algebra, matrix analysis, and tensor decompositions. Using the case of…

数值分析 · 数学 2025-04-08 Gabriel H. Brown , Joe Kileel , Tamara G. Kolda

The theory of matrix models is reviewed from the point of view of its relation to integrable hierarchies. Discrete 1-matrix, 2-matrix, ``conformal'' (multicomponent) and Kontsevich models are considered in some detail, together with the…

高能物理 - 理论 · 物理学 2010-12-17 A. Morozov

There exist several theorems which state that when a matroid is representable over distinct fields F_1,...,F_k, it is also representable over other fields. We prove a theorem, the Lift Theorem, that implies many of these results. First,…

组合数学 · 数学 2011-01-14 R. A. Pendavingh , S. H. M. van Zwam

This paper studies the properties of two kinds of matroids: (a) algebraic matroids and (b) finite and infinite matroids whose ground set have some canonical symmetry, for example row and column symmetry and transposition symmetry. For (a)…

组合数学 · 数学 2013-12-16 Franz J. Király , Zvi Rosen , Louis Theran

This dissertation presents new results on three different themes all related to matroid polytopes. First we investigate properties of Ehrhart polynomials of matroid polytopes, independence matroid polytopes, and polymatroids. We prove that…

组合数学 · 数学 2009-05-28 David C. Haws

In this work, we investigate the tensor inequalities in the tensor t-product formalism. The inequalities involving tensor power are proved to hold similarly as standard matrix scenarios. We then focus on the tensor norm inequalities. The…

数值分析 · 数学 2021-08-10 Zhengbang Cao , Pengpeng Xie

Matrix Factorization has emerged as a widely adopted framework for modeling data exhibiting low-rank structures. To address challenges in manifold learning, this paper presents a subspace-constrained quadratic matrix factorization model.…

机器学习 · 计算机科学 2024-11-08 Zheng Zhai , Xiaohui Li

Given two finite matroids on the same ground set, a celebrated result of Edmonds says that the ground set can be partitioned into two disjoint subsets in a manner that there is a common independent set in both matroids whose intersection…

组合数学 · 数学 2025-01-27 Irfan Alam