English

Noncommutative Pierce Duality between Steinberg Rings and Ample Ringoid Bundles

Rings and Algebras 2023-03-24 v4 Category Theory Operator Algebras

Abstract

Classic work of Pierce and Dauns-Hofmann shows that biregular rings are dual to simple ring bundles over Stone spaces. We extend this duality to Steinberg rings, a purely algebraic generalisation of Steinberg algebras, and ringoid bundles over ample groupoids. We base this largely on an even more general extension of Lawson's noncommutative Stone duality, specifically between Steinberg semigroups, a generalisation of Boolean inverse semigroups, and category bundles over ample groupoids.

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Cite

@article{arxiv.2012.03006,
  title  = {Noncommutative Pierce Duality between Steinberg Rings and Ample Ringoid Bundles},
  author = {Tristan Bice},
  journal= {arXiv preprint arXiv:2012.03006},
  year   = {2023}
}

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Final Version

R2 v1 2026-06-23T20:45:02.543Z