where Y ranges over metric spaces homeomorphic to X. In other words, X and Y have the same underlying set of points and the metric d<sub>Y</sub> of Y is topologically equivalent to d<sub>X</sub>. | where Y ranges over metric spaces homeomorphic to X. In other words, X and Y have the same underlying set of points and the metric d<sub>Y</sub> of Y is topologically equivalent to d<sub>X</sub>. |