Abstract
We study the commutator of the well-known Cauchy integral with a locally integrable function b on R, and establish a characterisation of the BMO space on R via the Lp boundedness of this commutator. Moreover, we also establish a characterisation of the VMO space on R via the compactness of this commutator.
Original language | English |
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Pages (from-to) | 193-216 |
Number of pages | 24 |
Journal | Studia Mathematica |
Volume | 250 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- BMO spaces
- VMO spaces
- commutators
- Cauchy integrals