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arXiv 1201.6473math.RTmath.QA
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与幂幺群相关的模范畴

Modular Categories Associated to Unipotent Groups

Tanmay Deshpande

摘要:

设G是特征p > 0的代数闭域k上的幂幺代数群,l是不同于p的素数,e是G上G-等变(在共轭作用下)\bar{Q_l} -复形的幺半范畴D_G(G)中的极小幂等元.我们可以把G和e与模范畴M_{G,e}联系起来。在这篇文章中,我们证明了以这种方式从幂幺群中产生的模范畴正是类C_p^{ \pm }中的模范畴。

英文摘要:

Let G be a unipotent algebraic group over an algebraically closed field k of characteristic p > 0 and let l be a prime different from p. Let e be a minimal idempotent in D_G(G), the braided monoidal category of G-equivariant (under conjugation action) \bar{Q_l}-complexes on G. We can associate to G and e a modular category M_{G,e}. In this article, we prove that the modular categories that arise in this way from unipotent groups are precisely those in the class C_p^{\pm}.

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