Compactifications of bundles of C*-algebras
Submitted: 2025-07-29
|Accepted: 2026-05-04
|Published: 2026-06-17
Copyright (c) 2026 Clara Marina Neira-Uribe, Januario Varela

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Downloads
Keywords:
Bundles of C*-algebras, Stone- Čech compactification, localization process
Supporting agencies:
Universidad Nacional Facultad de Ciencias (Bogotá)
Abstract:
This article presents the construction of a bundle of C*-algebras with a compact base space by means of localization processes resorting to inductive limits. This construction achieved in terms of the Stone-Čech compactification provides a solution to the compactness issue raised by P. Bertozzini, R. Conti and N. Pitiwan in Discrete Non-Commutative Gelfand-Naimark Duality, where the lack of compactness in the base space was an obstacle for the foreseen applications to quantum mechanics.
References:
F. Behrouzi, The Stone-Čech compactification of groupoids, Ukrainian Mathematical Journal 67, no. 4 (2015), 515-527.https://doi.org/10.1007/s11253-015-1097-x
P. Bertozzini, R. Conti, and N. Pitiwan, Discrete non-commutative Gelfand-Naimark duality, East-West J. Mathematics 21, no. 2 (2019), 103-143.
T. Bice, Dauns-Hofmann-Kumjian-Renault duality for Fell bundles and structured C*-algebras, arxiv:2104.12415.
J. Dauns and K. H. Hofmann, Representations of rings by sections, Mem. Amer. Math. Soc. 83 (1968).
K. H. Hofmann, Representations of algebras by continuous sections, Bulletin of the American Mathematical Society 78, no. 3 (1972), 291-373. https://doi.org/10.1090/S0002-9904-1972-12899-4
K. H. Hofmann, The Dauns-Hofmann theorem revisited, J. Algebra Appl. 10, no. 1 (2011), 29-37.https://doi.org/10.1142/S0219498811004409
K. H. Hofmann, Some bibliographical remarks on representations of algebras by continuous sections, in: K. H. Hofmann and J. R. Liukkonen (eds.), Recent Advances in the Representation Theory of Rings and C*-Algebras by Continuous Sections, Memoires of the American Mathematical Society 148 (1974), 177-182. https://doi.org/10.1090/memo/0148
A. Kumjian, Fell Bundles over groupoids, Proceedings of American Mathematical Society 126, no. 4 (1998), 1115-1125. https://doi.org/10.1090/S0002-9939-98-04240-3
C. M. Neira and J. Varela, Localization with change of the base space in uniform bundles and sheaves, Revista Colombiana de Matemáticas 41, no. 2 (2007), 303-333.
J. Varela, Duality of C*-Algebras, in: K. H. Hofmann and J. R. Liukkonen (eds.), Recent Advances in the Representation Theory of Rings and C*-Algebras by Continuous Sections, Memoires of the American Mathematical Society 148 (1974).
J. Varela, Sectional representation of Banach modules, Math Z. 139 (1974), 55-61.https://doi.org/10.1007/BF01194144
J. Varela, On the existence of uniform bundles, Revista Colombiana de Matemáticas XVIII (1984), 1-8.




