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arXiv 2104.02539math.RTmath.GR
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$\mathsf A$型的Morita等价和归纳分块Alperin重量条件

Morita equivalences and the inductive blockwise Alperin weight condition for type $\mathsf A$

Zhicheng Feng, Zhenye Li, Jiping Zhang

摘要:

作为对所有有限群建立块式Alperin重量猜想的一步,我们验证了Navarro-Tiep和Späth对Lie型$\mathsf A$,split或twisted单群引入的归纳块式Alperin重量条件.证明的关键是使用Bonnafé,Dat和Rouquier给出的有限约化群块的若尔当分解,将归纳条件的验证减少到孤立的(即幂幺的)块。

英文摘要:

As a step to establish the blockwise Alperin weight conjecture for all finite groups, we verify the inductive blockwise Alperin weight condition introduced by Navarro--Tiep and Späth for simple groups of Lie type $\mathsf A$, split or twisted. Key to the proofs is to reduce the verification of the inductive condition to the isolated (that means unipotent) blocks, using the Jordan decomposition for blocks of finite reductive groups given by Bonnafé, Dat and Rouquier.

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