caa a22 4500 606161236 CHVBK 20210128100633.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10468-014-9493-8 doi (NATIONALLICENCE)springer-10.1007/s10468-014-9493-8 Crossed Products as Twisted Category Algebras [Elektronische Daten] [Susanne Danz, Karin Erdmann] We show that certain crossed product algebras can be viewed as twisted category algebras associated with finite groupoids. The latter are always isomorphic to products of matrix algebras over twisted group algebras. This has several consequences, in particular in the case where the crossed product algebra is the bismash product associated with a group factorization of a finite group. Springer Science+Business Media Dordrecht, 2014 Twisted category algebra nationallicence Bismash product nationallicence Crossed product nationallicence Hopf algebra nationallicence Danz Susanne Department of Mathematics, University of Kaiserslautern, P.O. Box 3049, 67653, Kaiserslautern, Germany aut Erdmann Karin Mathematical Institute, University of Oxford, OX2 6GG, Oxford, ROQ, UK aut Algebras and Representation Theory Springer Netherlands 18/2(2015-04-01), 281-296 1386-923X 18:2<281 2015 18 10468 https://doi.org/10.1007/s10468-014-9493-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10468-014-9493-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Danz Susanne Department of Mathematics, University of Kaiserslautern, P.O. Box 3049, 67653, Kaiserslautern, Germany aut NATIONALLICENCE 700 1- Erdmann Karin Mathematical Institute, University of Oxford, OX2 6GG, Oxford, ROQ, UK aut NATIONALLICENCE 773 0- Algebras and Representation Theory Springer Netherlands 18/2(2015-04-01), 281-296 1386-923X 18:2<281 2015 18 10468