We consider a twist E over an étale groupoid G. When G is principal, we prove that the
nuclear dimension of the reduced twisted groupoid C⁎-algebra is bounded by a number …

We study the categorical homology of Zappa–Szép products of small categories, which
include all self-similar actions. We prove that the categorical homology coincides with the …

We present a comprehensive classification theory for saturated Fell bundles over locally
compact groups, utilizing data associated with their base group and unit fiber. This …

We define and study the external and the internal Zappa-Sz\'{e} p product of twists over
groupoids. We determine when a pair $(\Sigma_ {1},\Sigma_ {2}) $ of twists over a matched …

Given a full right-Hilbert C*-module $\mathbf {X} $ over a C*-algebra $ A $, the set $\mathbb
{K} _ {A}(\mathbf {X}) $ of $ A $-compact operators on $\mathbf {X} $ is the (up to …