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Generalized unitaries and the Picard group

✍ Scribed by Skeide, Michael


Publisher
Springer-Verlag
Year
2006
Tongue
English
Weight
216 KB
Volume
116
Category
Article
ISSN
0370-0089

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In this paper we study strongly graded coalgebras and its relation to the Picard group. A classiΓΏcation theorem for this kind of coalgebras is given via the second Doi's cohomology group. The strong Picard group of a coalgebra is introduced in order to characterize those graded coalgebras with stron