(1) Department of Mathematics, Agder University College, Servicebox 422, 4604 Kristiansand, Norway;(2) Institute of Pure Mathematics, University of Tartu, J. Liivi 2, 50409 Tartu, Estonia
Abstract:
We characterize families of vector measures of uniformly bounded variation and semivariation in terms of additivity properties.
A classical theorem of Rickart and a simplified proof of Nikodym’s boundedness theorem follow.
Received: 3 January 2006; Revised: 31 March 2006
The second named author was supported by Estonian Science Foundation Grant 5704.