We sketch how to express typical features of agent communication protocols in a simple temporal logic and show that conformance verification at runtime reduces to a generalised f...
Given a set P of n points in convex position in the plane, we prove that there exists a point p ∈ P such that the number of distinct distances from p is at least (13n−6)/36 . ...
This paper studies security for data aggregation in sensor networks. Current aggregation schemes were designed without security in mind and there are easy attacks against them. We...
Construction of geometrical objects by origami, the Japanese traditional art of paper folding, is enjoyable and intriguing. It attracted the minds of artists, mathematicians and co...
Tilings of the plane by translation show interesting regularity in the disposition of the tiles: in particular, we point out that in the case of a single tile, the obtained congur...