Operator algebras 13 Topological and related algebra and groups 9 Operator theory 6 C*-algebras 2 Congresses 2 Groupoids 2 Hilbert space 2 Lecture Notes in Mathematics 2 Algebra 1 Algebra-- Mathematics 1 Baum-Connes conjecture 1 Dilation theory (Operator theory) 1 Eigenfunction expansions 1 Functionaalanalyse 1 Group theory 1 Groups-- Algebra-- Mathematics 1 Homology theory 1 Invariant subspaces 1 Inverse semigroups 1 KK-theory 1 MATHEMATICS / Algebra / General 1 MATHEMATICS / Functional Analysis 1 Mappings (Mathematics) 1 Noncommutative differential geometry 1 Nonselfadjoint operators 1 Operator algebra 1 Operator algebras.1 1 Representations of algebras 1 Topology. Mathematical analysis 1 Vertex operator algebras 1