On various notions of regularity in ordered spaces
Let be the Banach space of real measures on a -ring , let be its dual, let be a quasi-complete locally convex space, let be its dual, and let be an -valued measure on . If is shown that for any there exists an element of such that for any and that the mapis order continuous. It follows that the closed convex hull of is weakly compact.
A Boolean algebra has the interpolation property (property (I)) if given sequences , in with for all , there exists an element in such that for all . Let denote an algebra with the property (I). It is shown that if ( a Banach space) is a sequence of strongly additive measures such that exists for each , then defines a strongly additive map from to and the are uniformly strongly additive. The Vitali-Hahn-Saks (VHS) theorem for strongly additive -valued measures defined...
In [4, 5, 7] an abstract, versatile approach was given to sequential weak compactness and lower closure results for scalarly integrable functions and multifunctions. Its main tool is an abstract version of the Komlós theorem, which applies to scalarly integrable functions. Here it is shown that this same approach also applies to Pettis integrable multifunctions, because the abstract Komlós theorem can easily be extended so as to apply to generalized Pettis integrable functions. Some results in the...
We show that if T is an uncountable Polish space, 𝓧 is a metrizable space and f:T→ 𝓧 is a weakly Baire measurable function, then we can find a meagre set M ⊆ T such that f[T∖M] is a separable space. We also give an example showing that "metrizable" cannot be replaced by "normal".
A characterization of absolutely summing operators by means of McShane integrable stochastic processes is considered.