English

Closed quantum surfaces from the Toeplitz extension

Quantum Algebra 2024-07-04 v2 K-Theory and Homology

Abstract

Closed quantum surfaces of any genus are defined as subalgebras of the Toeplitz algebra by mimicking the classical construction of identifying arcs on the boundary of the (quantum) unit disk. Isomorphism classes obtained from different arrangements of arcs are classified. It is shown that the K-groups are isomorphic to the classical counterparts and explicit generators of the C*-algebras and of the K-groups are given.

Keywords

Cite

@article{arxiv.2306.05585,
  title  = {Closed quantum surfaces from the Toeplitz extension},
  author = {Arley Sierra and Elmar Wagner},
  journal= {arXiv preprint arXiv:2306.05585},
  year   = {2024}
}

Comments

Originally announced as "Compact quantum surfaces of any genus" in arXiv:2002.10624, to appear in Rocky Mountain Journal of Mathematics

R2 v1 2026-06-28T11:00:35.932Z