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Strong General Position

We say that a finite set S of points in R^d is in &#34;strong general position&#34; if for any collection {F_1,..., F_r} of r pairwise disjoint subsets of S (1 <= r <= |S|) we have: d-dim (the intersection of aff F_1,aff F_2,...,aff F_r) = min{d+1, (d-dim aff F_1)+(d-dim aff F_2)+...+(d-dim aff F_r)}. In this paper we reduce the set of conditions that one has to check in order to determine if S is in &#34;strong general position&#34;.