English

Compact C*-quantum groupoids

Operator Algebras 2013-07-02 v3 Quantum Algebra

Abstract

We propose a definition of compact quantum groupoids in the setting of C*-algebras, associate to such a quantum groupoid a regular C*-pseudo-multiplicative unitary, and use this unitary to construct a dual Hopf C*-bimodule and to pass to a measurable quantum groupoid in the sense of Enock and Lesieur. Moreover, we discuss examples related to compact and to \'etale groupoids and study principal compact C*-quantum groupoids.

Keywords

Cite

@article{arxiv.0810.3771,
  title  = {Compact C*-quantum groupoids},
  author = {Thomas Timmermann},
  journal= {arXiv preprint arXiv:0810.3771},
  year   = {2013}
}

Comments

36 pages; missing references added

R2 v1 2026-06-21T11:33:16.471Z