We begin by constructing Hecke algebras for arbitrary finite regular monoids M. We then show that the semisimplicity of the complex monoid algebra β«ήβ¬ M is equivalent to the semisimplicity of the associated Hecke algebras and a condition on induced group characters. We apply these results to finite
Semisimplicity of adjacency algebras of association schemes
β Scribed by Akihide Hanaki
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 69 KB
- Volume
- 225
- Category
- Article
- ISSN
- 0021-8693
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β¦ Synopsis
In this paper, we investigate the semisimplicity of adjacency algebras of association schemes over positive characteristic fields. Our main result is that the Frame number characterizes semisimplicity of an adjacency algebra. In a sense, this is a generalization of Maschke's theorem.
π SIMILAR VOLUMES
The semisimplicity of IwahoriαHecke algebras has been studied by several Ε½ . authors. A. Gyoja J. Algebra 174, 1995, 553α572 gave a necessary and sufficient condition for IwahoriαHecke algebras to be semisimple, using the modular repre-Ε½ . sentation theory. The author J. Algebra 183, 1996, 514α544 s
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