摘要

Let (X, d, mu) be a metric measure space and satisfy the so-called upper doubling condition and the geometrically doubling condition. Under this assumption, in this paper, the authors establish a new characterization of the space RBMO(mu). As applications, the authors prove that the L-P(mu)-boundedness with p is an element of (1, infinity) of the Calderon-Zygmund operator is equivalent to its various endpoint estimates.