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In this paper we study homotopical properties of a special neighborhood system, which is denoted by {U?} > 0, for the canonical embedding of a compact metric space in its upper semifinite hyperspace to get results in the shape theory for compact[...]texto impreso
In this paper we use the upper semifinite topology in hyperspaces to get results in normal Hausdorff topology. The advantage of this point of view is that the upper semifinite topology, although highly non-Hausdorff, is very easy to handle. By t[...]
