On k nearest points of a finite set in a normed linear space

Given a finite set A in a normed linear space X and the integer k smaller or equal to the number of the elements of A, the average distance to the k nearest points of A from a point x of the space X is minimized

Local diameters of compact sets

Given a compact set in a Banach space, we study properties of local diameter

Existence of k-media and medians

We study the existence of k-media of finite sets in Banach space

A Fox Named Silence

Ope

Different types of convexity and concavity for copulas

Several different classes of copulas are examined and relations among them are studied in details

Different types of convexity and concavity for copulas

We characterize the class of copulas that can be constructed from the diagonal section by means of the functional equation C(x_y, x_y) = C(x, y)+ |x − y|, for all (x, y) in the unit square such that C(x, y) > 0. A simple construction method for copulas is also given

PCHS (Probiotic Hygiene Cleaning System) Protocol: reduction of hospital environmental impact with a new and innovative technology for cleaning in Ferrara University Hospital

Commit to environmental sustainability requires a review of policies, strategies and interventions in the areas of contact between the environment and the hospital, to minimize the impact of activities on the environment and therefore on health. The objectives include minimizing consumption of natural resources, of waste production (increase reuse-recycle), of air and water pollution

Eikasmós. Quaderni bolognesi di filologia classica. Rivista fondata da Enzo Degani

Comitato scientifico redazional