Infinitely generated pseudocompact modules for finite groups and Weiss' Theorem
Infinitely generated pseudocompact modules for finite groups and Weiss' Theorem
复制标题
有限群的无限生成伪紧模和 Weiss 定理
DOI:
10.1016/j.aim.2019.106925
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发表时间:
2018
影响因子:
1.7
通讯作者:
P. Zalesskii
中科院分区:
文献类型:
--
作者:
J. MacQuarrie;P. Symonds;P. Zalesskii
One of the most beautiful results in the integral representation theory of finite groups is a theorem of A. Weiss that detects a permutationR-lattice for the finitep-groupGin terms of the restriction to a normal subgroupNand theN-fixed points of the lattice, whereRis a finite extension of thep-adic integers. Using techniques from relative homological algebra, we generalize Weiss' Theorem to the class of infinitely generated pseudocompact lattices for a finitep-group, allowingRto be any complete discrete valuation ring in mixed characteristic. A related theorem of Cliff and Weiss is also generalized to this class of modules. The existence of the permutation cover of a pseudocompact module is proved as a special case of a more general result. The permutation cover is explicitly described.
DOI:
10.1515/crelle-2021-0064
发表时间:
2022
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
--
作者:
Eisele F
通讯作者:
Eisele F
影响因子:
0.9
作者:
Boltje R
通讯作者:
Boltje R
影响因子:
0.9
作者:
Livesey M
通讯作者:
Livesey M