van der Laan, Gerard; Talman, Dolf; Yang, Zaifu - In: European Journal of Operational Research 214 (2011) 3, pp. 493-500
We study the existence problem of a zero point of a function defined on a finite set of elements of the integer lattice of the n-dimensional Euclidean space . It is assumed that the set is integrally convex, which implies that the convex hull of the set can be subdivided in simplices such that...