Mathematics – Operator Algebras
Scientific paper
2007-09-07
Mathematics
Operator Algebras
Scientific paper
A host algebra of a topological group G is a C^*-algebra whose representations are in one-to-one correspondence with certain continuous unitary representations of G. In this paper we present an approach to host algebras for infinite dimensional Lie groups which is based on complex involutive semigroups. Any locally bounded absolute value \alpha on such a semigroup S leads in a natural way to a C^*-algebra C^*(S,\alpha), and we describe a setting which permits us to conclude that this C^*-algebra is a host algebra for a Lie group G. We further explain how to attach to any such host algebra an invariant weak-*-closed convex set in the dual of the Lie algebra of G enjoying certain nice convex geometric properties. If G is the additive group of a locally convex space, we describe all host algebras arising this way. The general non-commutative case is left for the future.
No associations
LandOfFree
A complex semigroup approach to group algebras of infinite dimensional Lie groups does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A complex semigroup approach to group algebras of infinite dimensional Lie groups, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A complex semigroup approach to group algebras of infinite dimensional Lie groups will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-467325