Discussions on the COVID-19 pandemic invariably include or turn into the notions of geometric or exponential progression or growth. These are mathematical concepts which many of us would have already ...

Linear combinations of exponential distribution functions are considered, and the class of distribution functions so obtainable is investigated. Convex combinations correspond to hyperexponential ...

A new class of geometric dispersion models associated with geometric sums is introduced by combining a geometric tilting operation with geometric compounding, in much the same way that exponential ...