“…A necessary and sufficient condition for a subset S of X 1 × X 2 × • • • × X n to be good was derived in our paper [7] and some consequences for simplicial measures and sums of algebras were discussed. For n = 2 these questions are well-discussed in [1,2,3,5,6,7,10,11,12,13,14,17]. The notion of a link or path between two points plays a crucial role in all these papers.…”