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arXiv math/0412287math.RT
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严格多项式函子与多重集

Strict polynomial functors and multisets

Torsten Ekedahl, Pelle Salomonsson

摘要:

我们证明了推广到任何特性的麦克唐纳的结果,描述了严格的多项式函子的特征零表示的广群的有限集和双射。我们的结果将给出一个类似的描述,在有限的多集和适当的多集双射的概念的扩展。一个预计的应用是严格的多项式单子的描述,将给出一个概念推广(线性代数)操作。

英文摘要:

We prove a generalisation to any characteristic of a result of Macdonald that describes strict polynomial functors in characteristic zero in terms of representations of the groupoid of finite sets and bijections. Our result will give an analogous description in terms of finite multisets and an extension of the notion of bijection appropriate for multisets. A projected application is to the description of strict polynomial monads that will give a notion generalising (linear algebra) operads.

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