Type: Article
Publication Date: 1970-12-01
Citations: 39
DOI: https://doi.org/10.2140/pjm.1970.35.581
In the setting of additive set functions deίined on lattices of sets, a Lebesguβ decomposition and a Radon-Nikodym derivative are constructed and characterized.In the appropriate case (L 2 ), the Radon-Nikodym derivative is shown to be the conditional expectation.Finally, a martingale convergence theorem for Radon-Nikodym derivatives is obtained.