2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224338This paper illustrates the notion of a Cartan subalgebra in a C*-algebra through a number of examples and counterexamples. Some of these examples have a geometrical flavour and are related to orbifolds and non-Hausdorff manifolds.7 pagesOperator Algebras46L55text