The classical problem of the random packing of spheres is restudied by introducing a new type of constraint among the spheres. This is done by examining the three-dimensional packing density of an open string of spherical beads as a function of the corresponding one-dimensional density along the...

The distribution of living languages is investigated and scaling relations are found for the diversity of languages as a function of the country area and population. These results are compared with data from Ecology and from computer simulations of fragmentation dynamics where similar scalings...

A discussion of certain geometrical aspects in the distribution of living languages as well as in the distribution of urban settlements is made with emphasis in scaling laws and fractals. It is shown that a power law scaling exists for the distribution n(s) of islands of s habitations in a...