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A natural Morita equivalence reduction for some blocks of G-crossed product -lattices and applications to the Clifford theory of finite group modular representation theory

机译:对于一些G交叉产品的块和应用于克利福德的有限组模块化学理论的一些街区的自然森塔等价降低

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Let be a complete discrete valuation ring with an algebraically closed residue field of characteristic p. Let G be a finite group and let A be a G-crossed product finitely generated -lattice. Section 1 presents a "natural Morita equivalence" reduction for some blocks of A. This setting was pioneered by E. C. Dade and extends some results of A. Hida and S. Koshitani, for example. In Section 2, we apply results in Section 1 and a basic result of Knorr to Finite Group Block Theory. In particular, we obtain a "lift from k to " of fundamental results of Kulshammer. This latter result has recently also been obtained by F. Eisele. We also present an "axiomitization" of the proof of an important result of B. Kulshammer and some examples.
机译:通过特征p的代数封闭的残留场,成为一个完整的离散估值环。 让G成为有限群体,让A成为有限地产生的G交叉的产品。 第1节介绍了A的一些块的“自然森塔等价”减少。该设置由E. C. Dade开创,延长了A. Hida和Koshitani的一些结果。 在第2节中,我们在第1节中应用结果和knorr到有限组块理论的基本结果。 特别是,我们从Kulshammer的基本结果中获得“从k到”的升力。 最近也曾通过F.艾莎获得后一种结果。 我们还提出了B.Kulshammer和一些例子的重要结果的“公理化”。

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