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Relative ranks of Lipschitz mappings on countable discrete metric spaces
Cichon, J.; Mitchell, James D.; Morayne, Michal; Peresse, Yann (2011-02-15)Let X be a countable discrete metric space and let XX denote the family of all functions on X. In this article, we consider the problem of finding the least cardinality of a subset A of XX such that every element of XX is ...