Geometrical objects with integral sides have attracted mathematicians for
ages. For example, the problem to prove or to disprove the existence of a
perfect box, that is, a rectangular parallelepiped with all edges, face
diagonals and space diagonals of integer lengths, remains open. More generally
an integral point set P is a set of n points in the
m-dimensional Euclidean space Em with pairwise integral distances
where the largest occurring distance is called its diameter. From the
combinatorial point of view there is a natural interest in the determination of
the smallest possible diameter d(m,n) for given parameters m and n. We
give some new upper bounds for the minimum diameter d(m,n) and some exact
values.Comment: 8 pages, 7 figures; typos correcte