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Structure analysis of the pointed Hopf algebras on Kleinian group. (Chinese. English summary) Zbl 1289.16060

Summary: With the help of quiver and the ramification system with characters of group, the authors construct the pointed Hopf algebras on Kleinian group and calculate the numbers of the non-isomorphic graded Hopf algebras.

MSC:

16T05 Hopf algebras and their applications
16G20 Representations of quivers and partially ordered sets
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