A novel sphere packing problem is introduced. A maximum number of spheres of different radii should be placed such that the spheres do not overlap and their centers fulfill a quasi-containment condition. The latter allows the spheres to lie partially outside the given cuboidal container....

Given the demographic structure of the population of the European countries, this paper examines how gender gaps in earned and non-earned income contribute to explain between household income inequality. We show that this impact depends not only on the existing gender gaps but also on the way...

Given the demographic structure of the population of the European countries, this paper examines how gender gaps in earned and non-earned income contribute to explain between household income inequality. We show that this impact depends not only on the existing gender gaps but also on the way...