The differences of composition operators Cφ - Cψ acting on the α-Bloch-Orlicz space ??α in the unit disk are characterized. Corresponding necessary and sufficient conditions are given for the differences to be bounded and compact.%研究了在单位圆盘上α-Bloch-Orlicz空间复合算子的差分Cφ-Cψ,根据构造不同的检测函数,给出了判断差分的有界性和紧性的充要条件.
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