English

Sheaves of Measures and KMS-Weights on Topological Graph Algebras

Operator Algebras 2024-11-06 v1

Abstract

We show that the collection of regular Borel measures on a second-countable locally compact Hausdorff space has the structure of a sheaf. With this we give an alternate description of the pullback of a regular Borel measure along a local homeomorphism. We are able to use these tools to give a description of the KMS-weights for the gauge-action on the graph C*-algebra of a second-countable topological graph in terms of sub-invariant measures on the vertex space of said topological graph.

Keywords

Cite

@article{arxiv.2310.03875,
  title  = {Sheaves of Measures and KMS-Weights on Topological Graph Algebras},
  author = {Jonas Eidesen},
  journal= {arXiv preprint arXiv:2310.03875},
  year   = {2024}
}

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25 pages