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Variational inequalities for the commutators of rough operators with BMO functions

  • Yanping Chen*
  • , Yong Ding
  • , Guixiang Hong
  • , Honghai Liu
  • *Corresponding author for this work
  • University of Science and Technology Beijing
  • Beijing Normal University
  • Wuhan University
  • Henan Polytechnic University

Research output: Contribution to journalArticlepeer-review

Abstract

Starting with the relatively simple observation that the variational estimates of the commutators of the standard Calderón-Zygmund operators with the bounded mean oscillation (BMO) functions can be obtained from their weighted variational estimates, we establish similar variational estimates for the commutators of the BMO functions with rough singular integrals, which do not admit any weighted variational estimates. The proof involves several Littlewood-Paley-type inequalities with the commutators as well as Bony decomposition and related para-product estimates.

Original languageEnglish
Pages (from-to)2437-2460
Number of pages24
JournalScience China Mathematics
Volume64
Issue number11
DOIs
StatePublished - Nov 2021
Externally publishedYes

Keywords

  • 42B20
  • 42B25
  • 46E30
  • averaging operator
  • commutator
  • rough kernel
  • singular integral
  • variational inequality

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