Étale Groupoids and Cuntz–Krieger Algebras
摘要
In the first part of this chapter, we will briefly introduce general theory of étale groupoids and their \(C^*\) -algebras which have been initiated by J. Renault in [22]. Many parts in the first two sections are seen in Renault’s monograph [22]; also see Sims’s exposition [28] (cf. [2, 29], etc.).