On relative projectivity of lattices in Auslander-Reiten components for group rings

On relative projectivity of lattices in Auslander-Reiten components for group rings
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群环 Auslander-Reiten 分量中晶格的相对射影率

DOI:
10.1080/00927872.2020.1715994
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发表时间:
2020
影响因子:
0.7
通讯作者:
Shigeto Kawata
Shigeto Kawata
中科院分区:
数学3区
文献类型:
--
作者:
Ayumu Inoue;Naoki Kimura;Ryo Nikkuni and Kouki Taniyama;Inoue Ayumu;井上 歩;井上 歩;井上 歩;井上 歩;井上 歩;井上 歩;Ayumu Inoue;Hiroshi Goda;井上 歩;Kawata Shigeto;合田洋;合田洋;Shigeto Kawata

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设Gbe是有限群,Gap-子群,Pa-Sylowp-子群,设G是特征为零的完全离散赋值环,剩余类域为p& ;设群环是无限表示型的,且足够大。设是一个稳定的Auslander-Reiten分支,它包含一个带有顶点Q的Scott格(Q)。则-格中的所有格都有Pas顶点。我们还证明了存在一个具有顶点P的不可分解格P使得AKG-模是Q-投射的
LetGbe a finite group,Qap-subgroup ofGandPa Sylowp-subgroup ofLetbe a complete discrete valuation ring of characteristic zero with residue class fieldof characteristicp> 0. Suppose that the group ringis of infinite representation type andis sufficiently large. Letbe a stable Auslander-Reiten component containing a Scott-latticeS(Q) with vertexQ. Then all the-lattices inhavePas their vertices. Also, we show that there exists an indecomposable-latticeLwith vertexPsuch that akG-moduleisQ-projective.Communicated by J. Zhang