On the Pointwise Limit of Vector Charges with the Saks Property

The well-known theorem about the density of the space of probability charges with the Saks property in the space of all probability charges in the pointwise topology is proved in the vector case. New features are the uniform Saks property for the family of charges and sufficient conditions for the pointwise limit of a sequence of charges to have the Saks property.     

Decomposition of transformations

The decomposition theorem for transformations without any additivity assumptions is proved. This result is new even for image transformations. We also introduce a new class of transformations with some additivity assumpt ions which includes image transformations. Using the transformation from this class we generalize the Aarnes factorization theorem to representable deficient topological measures. We also establish the relationship between the decomposition of a representable deficient topological measure and the decomposition of the transformation mentioned above.     

Proper quasi-measure criterion

In the well-known theorem about the decomposition of a quasi-measure into the sum of a measure and a proper quasi-measure, we give a new representation of the measure summand, which allows us to derive a proper quasi-measure test. We use this test to solve the problem of the sum of proper quasi-measures and generalize the results obtained to the case of quasi-states.     

On integration with respect to a DT-measure

DT-measures generalize the topological measures of Aarnes. We continue to study an integral of a real-valued continuous function on compact Hausdorff space with respect to a DT-measure and investigate the following: multiplicativity of this integral, \(w*\)-topology on the family of DT-measures and density of various subfamilies of this space, and also integral as a set function.