Hausdorff measures of sets in Exact Diophantine approximation

Bo Tan, Chen Tian, Baowei Wang +1

Let $(X,d)$ be a compact metric space, and let $Q\subset X$ be countable. Given functions $R:Q\to {\mathbb{R}}^{+}$ and $\varphi :{\mathbb{R}}^{+}\to {\mathbb{R}}^{+}$, we consider the set $E(Q…