Some new tent spaces and duality theorems for fractional Carleson measures and Qα(Rn)

Several duality questions for fractional Carleson measures and the spaces Q(alpha)(R-n) are resolved using a new type of tent spaces. These tent spaces are defined in terms of Choquet integrals with respect to Hausdorff capacity. A predual for Q(alpha)(R-n) is then defined as a space of distributions containing the Hardy space H-1, and an atomic decomposition is proved. (C) 2003 Elsevier Inc. All rights reserved.