Ways of obtaining topological measures on locally compact spaces.

*(English)*Zbl 1409.28005Summary: 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 \(n \geq 2\)).

##### MSC:

28C15 | Set functions and measures on topological spaces (regularity of measures, etc.) |

22D05 | General properties and structure of locally compact groups |

##### Keywords:

topological measure; deficient topological measure; solid-set function; super-measure; \(q\)-function
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\textit{S. V. Butler}, Izv. Irkutsk. Gos. Univ., Ser. Mat. 25, 33--45 (2018; Zbl 1409.28005)

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