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阿贝尔群Clifford代数

Abelian Group Clifford Algebras

Tim Neijens, Fred Van Oystaeyen

摘要:

在“A note on generalized Clifford algebras and representations”(Caenepeel,S.; Van Oystaeyen,F.,Comm. Algebra 17(1989)no.1,93- 102.)广义Clifford代数是通过Clifford表示引入的;它们对应于有限群(阿贝尔群)的射影表示,比如说$G$,使得相应的扭群环具有最小中心。后者则转化为这样的事实,即相应的2-上循环允许最小(无!)射线类别的数量,并且这迫使以适当的方式将$G$分解为循环分量,参见图10。Zmud,M.,辛几何和有限阿贝尔群的射影表示,(俄文)Mat. Sb.(N.S.)87(129)(1972),3- 17.在这篇小论文中,我将提供一种方法来表示一个阿贝尔群克利福德代数使用一个矩阵,然后给出一种方法来计算是否中心是平凡的。

英文摘要:

In "A note on generalized Clifford algebras and representations" (Caenepeel, S.; Van Oystaeyen, F., Comm. Algebra 17 (1989) no. 1, 93--102.) generalized Clifford algebras were introduced via Clifford representations; these correspond to projective representations of a finite group (Abelian), $G$ say, such that the corresponding twisted group ring has minimal center. The latter then translates to the fact that the corresponding 2-cocycle allows a minimal (none!) number of ray classes and this forces a decomposition of $G$ in cyclic components in a suitable way, cf. Zmud, M., Symplectic geometries and projective representations of finite Abelian groups, (Russian) Mat. Sb. (N.S.) 87(129) (1972), 3--17.. In this small paper, I will provide a way to represent an Abelian Group Clifford Algebra using a matrix, and then give a way to calculate whether or not the center is trivial.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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