Semisolid sets and topological measures

Butler, Svetlana V.

doi:10.1016/j.topol.2022.108036

Topology and its Applications

2022

DOI: 10.1016/j.topol.2022.108036

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Semisolid sets and topological measures

Svetlana V. Butler

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2022

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Repeated quasi-integration on locally compact spaces

Butler

2022

Positivity

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When X is locally compact, a quasi-integral (also called a quasi-linear functional) on $$ C_c(X)$$ C c ( X ) is a homogeneous, positive functional that is only assumed to be linear on singly-generated subalgebras. We study simple and almost simple quasi-integrals, i.e., quasi-integrals whose corresponding compact-finite topological measures assume exactly two values. We present equivalent conditions for a quasi-integral to be simple or almost simple. We give a criterion for repeated quasi-integration (i.e., iterated integration with respect to topological measures) to yield a quasi-linear functional. We find a criterion for a double quasi-integral to be simple or almost simple. We describe how a product of topological measures acts on open and compact sets. We show that different orders of integration in repeated quasi-integrals give the same quasi-integral if and only if the corresponding topological measures are both measures or one of the corresponding topological measures is a positive scalar multiple of a point mass.

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Repeated quasi-integration on locally compact spaces

Butler

2022

Positivity

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Semisolid sets and topological measures

Cited by 1 publication

References 33 publications

Repeated quasi-integration on locally compact spaces

Repeated quasi-integration on locally compact spaces

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