Examples of weak Hopf algebras arising from vacant double groupoids

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dc.creatorAndruskiewitsch, Nicolas
dc.creatorMombelli, Juan Martin
dc.date2004-05-19
dc.date.accessioned2026-07-07T08:06:16Z
dc.date.available2026-07-07T08:06:16Z
dc.descriptionWe construct explicit examples of weak Hopf algebras (actually face algebras in the sense of Hayashi) via vacant double groupoids as explained in \http://arxiv.org/abs/math.QA/0308228. To this end, we first study the Kac exact sequence for matched pairs of groupoids and show that it can be computed via group cohomology. Then we describe explicit examples of finite vacant double groupoids.
dc.description19 pages
dc.identifierhttps://arxiv.org/abs/math/0405374
dc.identifierhttp://arxiv.org/abs/math/0405374
dc.identifierNagoya Math. J. 181 (2006), 1--27
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/130549
dc.subjectQuantum Algebra
dc.subject16W30
dc.titleExamples of weak Hopf algebras arising from vacant double groupoids
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