{"title":"2-Products of Idempotent by Nilpotent Matrices","authors":"Grigore Călugăreanu, Horia F. Pop","doi":"10.1007/s41980-024-00883-y","DOIUrl":null,"url":null,"abstract":"<p>Over Prüfer domains, we characterize idempotent by nilpotent 2-products of <span>\\(2\\times 2\\)</span> matrices. Nilpotents are always such products. We also provide large classes of rings over which every <span>\\(2\\times 2\\)</span> idempotent matrix is such a product. Finally, for <span>\\(2\\times 2\\)</span> matrices over GCD domains, idempotent–nilpotent products which are also nilpotent–idempotent products are characterized.</p>","PeriodicalId":9395,"journal":{"name":"Bulletin of The Iranian Mathematical Society","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of The Iranian Mathematical Society","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1007/s41980-024-00883-y","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Over Prüfer domains, we characterize idempotent by nilpotent 2-products of \(2\times 2\) matrices. Nilpotents are always such products. We also provide large classes of rings over which every \(2\times 2\) idempotent matrix is such a product. Finally, for \(2\times 2\) matrices over GCD domains, idempotent–nilpotent products which are also nilpotent–idempotent products are characterized.
期刊介绍:
The Bulletin of the Iranian Mathematical Society (BIMS) publishes original research papers as well as survey articles on a variety of hot topics from distinguished mathematicians. Research papers presented comprise of innovative contributions while expository survey articles feature important results that appeal to a broad audience. Articles are expected to address active research topics and are required to cite existing (including recent) relevant literature appropriately. Papers are critically reviewed on the basis of quality in its exposition, brevity, potential applications, motivation, value and originality of the results. The BIMS takes a high standard policy against any type plagiarism. The editorial board is devoted to solicit expert referees for a fast and unbiased review process.