On the Continuity of Semi-Norms on Operator Algebras.
Dimension Functions on Simple C*-Algebras.
K-theoretic amenability for discrete groups.
The structure of multiplication and addition in simple C*-algebras.
A Class of C*-Algebras and Topological Markov Chains.
Some remarks on C*-algebras associated with certain topologicalMarkov chains.
On the K-theory of the -algebra generated by the left regular representation of an Ore semigroup
We compute the -theory of -algebras generated by the left regular representation of left Ore semigroups satisfying certain regularity conditions. Our result describes the -theory of these semigroup -algebras in terms of the -theory for the reduced group -algebras of certain groups which are typically easier to handle. Then we apply our result to specific semigroups from algebraic number theory.
Bivariant -theory for locally convex algebras and the Chern-Connes character. (Bivariante -Theorie für lokalconvexe Algebren und der Chern-Connes-Charakter.)
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