{"title":"Main Properties of the Faddeev Equation for 2 × 2 Operator Matrices","authors":"T. H. Rasulov, E. B. Dilmurodov","doi":"10.3103/s1066369x2312006x","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this paper we consider a <span>\\(2 \\times 2\\)</span> operator matrix <span>\\(H\\)</span>. We construct an analog of the well-known Faddeev equation for the eigenvectors of <span>\\(H\\)</span> and study some important properties of this equation, related with the number of eigenvalues. In particular, the Birman–Schwinger principle for <span>\\(H\\)</span> is proven.</p>","PeriodicalId":46110,"journal":{"name":"Russian Mathematics","volume":"82 1","pages":""},"PeriodicalIF":0.5000,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Mathematics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3103/s1066369x2312006x","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper we consider a \(2 \times 2\) operator matrix \(H\). We construct an analog of the well-known Faddeev equation for the eigenvectors of \(H\) and study some important properties of this equation, related with the number of eigenvalues. In particular, the Birman–Schwinger principle for \(H\) is proven.