Talman, Dolf; van der Laan, G.; Yang, Z.F. - Tilburg University, Center for Economic Research - 2008
In this paper we study the existence problem of a zero point of a function defined on a finite set of elements of the integer lattice Zn of the n-dimensional Euclidean space IRn. It is assumed that the set is integrally convex, which implies that the convex hull of the set can be subdivided in...