摘要
I. INTRODUCTIONIn Chang and Fefferman’s paper, they obtained atomic decomposition of H<sup>P</sup>(R<sub>+</sub><sup>2</sup>R<sub>2</sub><sup>+</sup>) spaces by use of p-atoms. For the same reason as in the classical upper half plane, they need some higher orders vanishing property of a p-atom