关系广群的卷积代数及其约化
Convolution algebras for Relational Groupoids and Reduction
摘要:
我们引入了关系广群和关系卷积代数的概念。我们提供了各种例子所产生的群代数的一组$G$和一个给定的正常子群$H$。我们还给出了一个Haar系统的措施上的关系广群兼容的卷积的存在条件,我们证明了一个减少定理,恢复通常的卷积李群。
英文摘要:
We introduce the notions of relational groupoids and relational convolution algebras. We provide various examples arising from the group algebra of a group $G$ and a given normal subgroup $H$. We also give conditions for the existence of a Haar system of measures on a relational groupoid compatible with the convolution, and we prove a reduction theorem that recovers the usual convolution of a Lie groupoid.
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