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Mathematics 2009
The vertices and sources of the natural simple module for the alternating group in even characteristicAbstract: For $n\geq 5$ the natural permutation module for the alternating group $\mathfrak{A}_n$ has a unique non-trivial composition factor, being called its natural simple module. We determine the vertices and sources of the natural simple $\mathfrak{A}_n$-module over fields of characteristic 2.
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