scholarly journals Finite generation of the cohomology of some skew group algebras

2014 ◽  
Vol 8 (7) ◽  
pp. 1647-1657 ◽  
Author(s):  
Van Nguyen ◽  
Sarah Witherspoon
2018 ◽  
Vol 12 (2) ◽  
pp. 491-492 ◽  
Author(s):  
Van Nguyen ◽  
Sarah Witherspoon

2019 ◽  
Vol 518 ◽  
pp. 211-236
Author(s):  
S. Fryer ◽  
T. Kanstrup ◽  
E. Kirkman ◽  
A.V. Shepler ◽  
S. Witherspoon

Author(s):  
M. H. Bien ◽  
M. Ramezan-Nassab

In this paper, we study some algebras [Formula: see text] whose unit groups [Formula: see text] or subnormal subgroups of [Formula: see text] are (generalized) Engel. For example, we show that any generalized Engel subnormal subgroup of the multiplicative group of division rings with uncountable centers is central. Some of algebraic structures of Engel subnormal subgroups of the unit groups of skew group algebras over locally finite or torsion groups are also investigated.


2020 ◽  
Vol 71 (3) ◽  
pp. 1009-1047
Author(s):  
Patrick Le Meur

Abstract Let $R$ be the skew group algebra of a finite group acting on the path algebra of a quiver. This article develops both theoretical and practical methods to do computations in the Morita-reduced algebra associated to $R$. Reiten and Riedtmann proved that there exists an idempotent $e$ of $R$ such that the algebra $eRe$ is both Morita equivalent to $R$ and isomorphic to the path algebra of some quiver, which was described by Demonet. This article gives explicit formulas for the decomposition of any element of $eRe$ as a linear combination of paths in the quiver described by Demonet. This is done by expressing appropriate compositions and pairings in a suitable monoidal category, which takes into account the representation theory of the finite group.


2011 ◽  
Vol 332 (1) ◽  
pp. 209-228 ◽  
Author(s):  
Bo Hou ◽  
Shilin Yang

1985 ◽  
Vol 92 (1) ◽  
pp. 224-282 ◽  
Author(s):  
Idun Reiten ◽  
Christine Riedtmann

2019 ◽  
Vol 75 (1) ◽  
Author(s):  
Yonggang Hu ◽  
Hailou Yao

2019 ◽  
Vol 526 ◽  
pp. 112-165
Author(s):  
Simone Giovannini ◽  
Andrea Pasquali

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