{"title":"Group of Isometries of the Lattice $$K_0(\\mathbb P_n)$$","authors":"I. S. Beldiev","doi":"10.1134/s0001434624030222","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p> We study the isometry group of the Grothendieck group <span>\\(K_0(\\mathbb P_n)\\)</span> equipped with a bilinear asymmetric Euler form. We prove several properties of this group; in particular, we show that it is isomorphic to the direct product of <span>\\(\\mathbb Z/2\\mathbb Z\\)</span> by the free Abelian group of rank <span>\\([(n+1)/2]\\)</span>. We also explicitly calculate its generators for <span>\\(n\\le 6\\)</span>. </p>","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1134/s0001434624030222","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We study the isometry group of the Grothendieck group \(K_0(\mathbb P_n)\) equipped with a bilinear asymmetric Euler form. We prove several properties of this group; in particular, we show that it is isomorphic to the direct product of \(\mathbb Z/2\mathbb Z\) by the free Abelian group of rank \([(n+1)/2]\). We also explicitly calculate its generators for \(n\le 6\).