Noncommutative Geometry and Diffeology: The Case of Orbifolds
September 5, 2016, update October 10, 2017
 
We establish a structural link between diffeological orbifolds regarded as diffeologies and non-commutative geometry. Precisely, we associate a structure groupoid with every atlas of a diffeological orbifold. We show that different atlases give equivalent groupoids, that generate Morita equivalent C*-algebras, according to the standard Connes-Renault procedure.

[Joint with Jean-Pierre Laffineur]

In Journal of Noncommutative Geometry. Volume 12, Issue 4, 2018, pp. 1551–1572 DOI: 10.4171/JNCG/319.https://www.ems-ph.org/journals/show_abstract.php?issn=1661-6952&vol=12&iss=4&rank=11shapeimage_3_link_0