Subquotients of Hecke C^*-algebras

Details Subquotients of Hecke C^*-algebras Subquotients of Hecke C^*-algebras

2003-09-26

arxiv.org/abs/math/0309429v1

Mathematics

Operator Algebras

18 pages

Scientific paper

The Bost-Connes Hecke C^*-algebra can be regarded as a direct limit of subalgebras involving finite sets of primes. Each of these finite-prime analogues of the Bost-Connes algebra is a crossed product by a semigroup N^F, where F is finite. We describe composition series of ideals for these semigroup crossed products in which the intermediate subquotients are finite direct sums of classifiable AT-algebras. We then use similar techniques to identify subquotients of the Bost-Connes algebra as classifiable AT-algebras.

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