2 papers
math.OA2025
Generalised Twisted Groupoids and their C*-algebras
Lisa Orloff Clark, Michael à Ceallaigh, Hung Pham
We consider a locally compact Hausdorff groupoid , and twist by a more general locally compact Hausdorff abelian group rather than the complex unit circle . We…
math.AC2025
The vanishing of the first tight Hilbert coefficient for Buchsbaum rings
Duong Thi Huong, Nguyen Tuan Long, Pham Hung Quy
We prove that if the first tight Hilbert coefficient vanishes then ring is -rational provided it is a Buchsbaum local ring satisfying the condition.