Locally finiteness and convolution products in groupoids
In Ho Hwang, Hee Sik Kim, J. Neggers · AIMS Mathematics · 2020
In this paper, we introduce a version of the Moebius function and other special functions on a particular class of intervals for groupoids, and study them to obtain results analogous to those obtained in the usual lattice, combinatorics and number theory setting, but of course much more general due to the viewpoint taken in this paper.