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Modules of solvable infinitesimal groups and the structure of representation-finite cocommutative Hopf algebras

Published online by Cambridge University Press:  01 November 1999

ROLF FARNSTEINER
Affiliation:
Department of Mathematics, University of Wisconsin, Milwaukee, WI 53201, U.S.A.; e-mail: [email protected]
DETLEF VOIGT
Affiliation:
Department of Mathematics, University of Wisconsin, Milwaukee, WI 53201, U.S.A.; e-mail: [email protected]

Abstract

In continuation of earlier work [7], we study in this paper the structure of cocommutative Hopf algebras of finite representation type. Since every such algebra is the group algebra H([Gscr ]) of a finite algebraic group [Gscr ], this problem has two interrelated aspects. On the one hand, one has to understand the structure of the group scheme [Gscr ], while on the other the Morita equivalence class of H([Gscr ]) has to be determined. Although we shall here be mainly concerned with the latter, structural information on the underlying group schemes enters crucially at several points.

Type
Research Article
Copyright
© The Cambridge Philosophical Society 1999

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