给出了由分数次算子极大算子Mα和b∈BMO生成的m阶交换子的加权范数不等式。并对〈p/q'≤2的情况举例证明了其结果是最优的。
The authors establish a sharp weighted inequality for the m-order commutator of the fractional integral maximal operator M mb,α with b ∈ BMO. Finally an example to prove the bound is sharp for the case 1〈 p'q ≤2 is constructed.