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Bulletin of Irkutsk State University. Series Mathematics, 2018 Volume 25, Pages 33–45 (Mi iigum344)

This article is cited in 5 papers

Ways of obtaining topological measures on locally compact spaces

S. V. Butler

University of California Santa Barbara, Santa Barbara, USA

Abstract: Topological measures and quasi-linear functionals generalize measures and linear functionals. Deficient topological measures, in turn, generalize topological measures. In this paper we continue the study of topological measures on locally compact spaces. For a compact space the existing ways of obtaining topological measures are (a) a method using super-measures, (b) composition of a q-function with a topological measure, and (c) a method using deficient topological measures and single points. These techniques are applicable when a compact space is connected, locally connected, and has a certain topological characteristic, called “genus”, equal to $0$ (intuitively, such spaces have no holes). We generalize known techniques to the situation where the space is locally compact, connected, and locally connected, and whose Alexandroff one-point compactification has genus $0$. We define super-measures and q-functions on locally compact spaces. We then obtain methods for generating new topological measures by using super-measures and also by composing q-functions with deficient topological measures. We also generalize an existing method and provide a new method that utilizes a point and a deficient topological measure on a locally compact space. The methods presented allow one to obtain a large variety of finite and infinite topological measures on spaces such as $ {\mathbb R}^n$, half-spaces in ${\mathbb R}^n$, open balls in ${\mathbb R}^n$, and punctured closed balls in ${\mathbb R}^n$ with the relative topology (where $n \geq 2$).

Keywords: topological measure, deficient topological measure, solid-set function, super-measure, $q$-function.

UDC: 517.987

MSC: 28C15

Received: 10.08.2018

Language: English

DOI: 10.26516/1997-7670.2018.25.33



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