Cyclic subgroup commutativity degrees of finite groups
  In this paper we introduce and study the concept of cyclic subgroup commutativity degree of a finite group $G$. This quantity measures the probability of two random cyclic subgroups of $G$ commuting. Explicit formulas are obtained for some particular classes of groups. A criterion for a finite group to be an Iwasawa group is also presented. 
Marius Tarnauceanu and Mihai-Silviu Lazorec
math.GR