Volume 35, Issue 3
A Note on Weak Type $(1,1)$ Estimate for the Higher Order Commutators of Christ-Journe Type
10.4208/ata.OA-0007

Anal. Theory Appl., 35 (2019), pp. 268-287.

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• Abstract

In this paper, a weak type $(1,1)$ estimate is established for the higher order commutator introduced by Christ and Journ\'e which is defined by

$$T[a_1,\cdots,a_l]f(x)=p.v. \int_{R^d} K(x-y)\Big(\prod_{i=1}^lm_{x,y}a_i\Big)\cdot f(y)dy,$$

where $K$ is the standard Calder\'on-Zygmund convolution kernel on $\mathbb{R}^d (d\geq2)$ and $m_{x,y}a_i=\int_0^1a_i(sx+(1-s)y)ds$.

• History

Published online: 2019-04

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