English

Families of Sets in Constructive Measure Theory

Logic 2022-07-11 v1

Abstract

We present the first steps of a predicative reconstruction of the constructive Bishop-Cheng measure theory. Working in a semi-formal elaboration of Bishop's set theory and invoking the notion of a set-indexed family of subsets (of a given set), we arrive at notions of a pre-integration space and of a pre-measure space. We then construct the pre-integration space of simple functions associated to a pre-measure space and the L1L^1-completion of a pre-integration space. Unlike the standard presentation of Bishop-Cheng measure theory, our development is completely predicative and avoids the axiom of countable choice.

Keywords

Cite

@article{arxiv.2207.04000,
  title  = {Families of Sets in Constructive Measure Theory},
  author = {Max Zeuner},
  journal= {arXiv preprint arXiv:2207.04000},
  year   = {2022}
}