Iterated commutators under a joint condition on the tuple of multiplying functions
Iterated commutators under a joint condition on the tuple of multiplying functions
复制标题
乘法函数元组联合条件下的迭代交换子
DOI:
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发表时间:
2019
期刊:
影响因子:
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通讯作者:
Tuomas Oikari
中科院分区:
文献类型:
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作者:
T. Hytonen;Kangwei Li;Tuomas Oikari
We present a pair of joint conditions on the two functions $b_1,b_2$ strictly weaker than $b_1,b_2in operatorname{BMO}$ that almost characterize the $L^2$ boundedness of the iterated commutator $[b_2,[b_1,T]]$ of these functions and a Calder'on-Zygmund operator $T.$ Namely, we sandwich this boundedness between two bisublinear mean oscillation conditions of which one is a slightly bumped up version of the other.