{"title":"Combinatorial identities arising from permanents for Euler numbers and Stirling numbers","authors":"Zhicong Lin , Weigen Yan , Tongyuan Zhao","doi":"10.1016/j.aam.2025.102852","DOIUrl":null,"url":null,"abstract":"<div><div>We prove several combinatorial identities involving (binomial) Euler numbers and Stirling numbers (in type <em>A</em> or <em>B</em>) of the second kind. These identities arise from our evaluation of the permanents of some special matrices. In particular, a Frobenius-like formula for the 2-Eulerian polynomials is obtained and an alternative approach to Conjecture 1.6 in Fu et al. (2025) <span><span>[8]</span></span> concerning the evaluation of the permanent of the matrix <span><math><msub><mrow><mo>[</mo><mrow><mi>sgn</mi></mrow><mrow><mo>(</mo><mi>cos</mi><mo></mo><mi>π</mi><mfrac><mrow><mi>i</mi><mo>+</mo><mi>j</mi></mrow><mrow><mi>n</mi><mo>+</mo><mn>1</mn></mrow></mfrac><mo>)</mo></mrow><mo>]</mo></mrow><mrow><mn>1</mn><mo>≤</mo><mi>i</mi><mo>,</mo><mi>j</mi><mo>≤</mo><mi>n</mi></mrow></msub></math></span> is provided.</div></div>","PeriodicalId":50877,"journal":{"name":"Advances in Applied Mathematics","volume":"165 ","pages":"Article 102852"},"PeriodicalIF":1.0000,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Applied Mathematics","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0196885825000144","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
We prove several combinatorial identities involving (binomial) Euler numbers and Stirling numbers (in type A or B) of the second kind. These identities arise from our evaluation of the permanents of some special matrices. In particular, a Frobenius-like formula for the 2-Eulerian polynomials is obtained and an alternative approach to Conjecture 1.6 in Fu et al. (2025) [8] concerning the evaluation of the permanent of the matrix is provided.
期刊介绍:
Interdisciplinary in its coverage, Advances in Applied Mathematics is dedicated to the publication of original and survey articles on rigorous methods and results in applied mathematics. The journal features articles on discrete mathematics, discrete probability theory, theoretical statistics, mathematical biology and bioinformatics, applied commutative algebra and algebraic geometry, convexity theory, experimental mathematics, theoretical computer science, and other areas.
Emphasizing papers that represent a substantial mathematical advance in their field, the journal is an excellent source of current information for mathematicians, computer scientists, applied mathematicians, physicists, statisticians, and biologists. Over the past ten years, Advances in Applied Mathematics has published research papers written by many of the foremost mathematicians of our time.