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arXiv 1707.02592math.RT
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旗叶品种杂交特性的排列模

The Permutation Module on Flag Varieties in Cross Characteristic

Xiaoyu Chen, Junbin Dong

摘要:

设${\bf G}$是$\bar{\mathbb{F}}_q$上的一个连通约化群,它是$\mathbb{F}_q$(含$q=p^e$元素的有限域)的代数闭包,具有标准Frobenius映射$F$ .设${\bf B}$是$F$ -稳定Borel子群.设$\Bbbk$是特征$r\neq p$的场。本文完全确定了诱导模$Ind_{B}^{G}{tr}=\Bbbk{G}\otimes_{\Bbbk{\bf B}}$ tr(这里$\Bbbk{H}$是群${H}$的群代数,tr是平凡$B$ -模)的合成因子.特别是,我们发现了一个新的家庭的无限维不可约的抽象表示$G$。

英文摘要:

Let ${\bf G}$ be a connected reductive group over $\bar{\mathbb{F}}_q$, the algebraically closure of $\mathbb{F}_q$ (the finite field with $q=p^e$ elements), with the standard Frobenius map $F$. Let ${\bf B}$ be an $F$-stable Borel subgroup. Let $\Bbbk$ be a field of characteristic $r\neq p$. In this paper, we completely determine the composition factors of the induced module $Ind_{B}^{G}{tr}=\Bbbk{G}\otimes_{\Bbbk{\bf B}}$ tr (here $\Bbbk{H}$ is the group algebra of the group ${H}$, and tr is the trivial $B$-module). In particular, we find a new family of infinite dimensional irreducible abstract representations of $G$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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