刻画了单位球上Lipschitz空间的特征,同时给出了加权复合算子Wu,φ在Lipschitz空间上为有界算子和紧算子的充要条件.作为一个推论,利用角导数定理得出‖φ‖∞〈1是复合算子Cφ在Lipschitz空间上为紧的必要条件.
Abstract: The characterization of the Lipschitz space in the unit ball is given, and the necessary and sufficient conditions are obtained for the weighted composition operator Wo,