In this paper, we apply the concept of asymptotic dimension to calculating Gromov-Hausdorff distances between some unbounded metric spaces. For example, we show that the Gromov--Hausdorff between R² with the Euclidean metric and Z² equals the Hausdorff distance between them: d₆₇ (R², Z²) = dH (R², Z²).
I. N. Mikhailov (Thu,) studied this question.