{"title":"The central limit theorem for entries of random matrices with specified rank over finite fields","authors":"Chin Hei Chan, Maosheng Xiong","doi":"10.1016/j.ffa.2025.102603","DOIUrl":null,"url":null,"abstract":"<div><div>Let <span><math><msub><mrow><mi>F</mi></mrow><mrow><mi>q</mi></mrow></msub></math></span> be the finite field of order <em>q</em>, and <span><math><mi>A</mi></math></span> a non-empty proper subset of <span><math><msub><mrow><mi>F</mi></mrow><mrow><mi>q</mi></mrow></msub></math></span>. Let <strong>M</strong> be a random <span><math><mi>m</mi><mo>×</mo><mi>n</mi></math></span> matrix of rank <em>r</em> over <span><math><msub><mrow><mi>F</mi></mrow><mrow><mi>q</mi></mrow></msub></math></span> taken with uniform distribution. It was proved recently by Sanna that as <span><math><mi>m</mi><mo>,</mo><mi>n</mi><mo>→</mo><mo>∞</mo></math></span> and <span><math><mi>r</mi><mo>,</mo><mi>q</mi><mo>,</mo><mi>A</mi></math></span> are fixed, the number of entries of <strong>M</strong> in <span><math><mi>A</mi></math></span> approaches a normal distribution. The question was raised as to whether or not one can still obtain a central limit theorem of some sort when <em>r</em> goes to infinity in a way controlled by <em>m</em> and <em>n</em>. In this paper we answer this question affirmatively.</div></div>","PeriodicalId":50446,"journal":{"name":"Finite Fields and Their Applications","volume":"105 ","pages":"Article 102603"},"PeriodicalIF":1.2000,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Finite Fields and Their Applications","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1071579725000334","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Let be the finite field of order q, and a non-empty proper subset of . Let M be a random matrix of rank r over taken with uniform distribution. It was proved recently by Sanna that as and are fixed, the number of entries of M in approaches a normal distribution. The question was raised as to whether or not one can still obtain a central limit theorem of some sort when r goes to infinity in a way controlled by m and n. In this paper we answer this question affirmatively.
期刊介绍:
Finite Fields and Their Applications is a peer-reviewed technical journal publishing papers in finite field theory as well as in applications of finite fields. As a result of applications in a wide variety of areas, finite fields are increasingly important in several areas of mathematics, including linear and abstract algebra, number theory and algebraic geometry, as well as in computer science, statistics, information theory, and engineering.
For cohesion, and because so many applications rely on various theoretical properties of finite fields, it is essential that there be a core of high-quality papers on theoretical aspects. In addition, since much of the vitality of the area comes from computational problems, the journal publishes papers on computational aspects of finite fields as well as on algorithms and complexity of finite field-related methods.
The journal also publishes papers in various applications including, but not limited to, algebraic coding theory, cryptology, combinatorial design theory, pseudorandom number generation, and linear recurring sequences. There are other areas of application to be included, but the important point is that finite fields play a nontrivial role in the theory, application, or algorithm.