{"title":"A characteristic map for compact quantum groups","authors":"Atabey Kaygun, Serkan Sütlü","doi":"10.1007/s40062-016-0138-y","DOIUrl":null,"url":null,"abstract":"<p>We show that if <i>G</i> is a compact Lie group and <span>\\(\\mathfrak {g}\\)</span> is its Lie algebra, then there is a map from the Hopf-cyclic cohomology of the quantum enveloping algebra <span>\\(U_q(\\mathfrak {g})\\)</span> to the twisted cyclic cohomology of quantum group algebra <span>\\({\\mathcal O}(G_q)\\)</span>. We also show that the Schmüdgen-Wagner index cocycle associated with the volume form of the differential calculus on the standard Podle? sphere <span>\\({\\mathcal O}(S^2_q)\\)</span> is in the image of this map.</p>","PeriodicalId":636,"journal":{"name":"Journal of Homotopy and Related Structures","volume":"12 3","pages":"549 - 576"},"PeriodicalIF":0.5000,"publicationDate":"2016-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s40062-016-0138-y","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Homotopy and Related Structures","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s40062-016-0138-y","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
We show that if G is a compact Lie group and \(\mathfrak {g}\) is its Lie algebra, then there is a map from the Hopf-cyclic cohomology of the quantum enveloping algebra \(U_q(\mathfrak {g})\) to the twisted cyclic cohomology of quantum group algebra \({\mathcal O}(G_q)\). We also show that the Schmüdgen-Wagner index cocycle associated with the volume form of the differential calculus on the standard Podle? sphere \({\mathcal O}(S^2_q)\) is in the image of this map.
期刊介绍:
Journal of Homotopy and Related Structures (JHRS) is a fully refereed international journal dealing with homotopy and related structures of mathematical and physical sciences.
Journal of Homotopy and Related Structures is intended to publish papers on
Homotopy in the broad sense and its related areas like Homological and homotopical algebra, K-theory, topology of manifolds, geometric and categorical structures, homology theories, topological groups and algebras, stable homotopy theory, group actions, algebraic varieties, category theory, cobordism theory, controlled topology, noncommutative geometry, motivic cohomology, differential topology, algebraic geometry.