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Weighted BMO and Hankel operators between weighted Bergman spaces
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We introduce a family of weighted BMO spaces in the Bergman metric on the unit ball of $\Bbb{C}^n$ and use them to characterize complex functions $f$ such that the big Hankel operators $H_f$ and $H\overline{_f}$ are both bounded or compact from a weighted Bergman space into a weighted Lesbegue space with possibly different exponents and different weights. As a consequence, when the symbol function $f$ is holomorphic, we characterize bounded and compact Hankel operators $H\overline{_f}$ between weighted Bergman spaces. In particular, this resolves two questions left open in [7, 12].
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PAU, Jordi, ZHAO, Ruhan and ZHU, Keke. Weighted BMO and Hankel operators between weighted Bergman spaces. Indiana University Mathematics Journal. 2016. Vol. 65, num. 5, pags. 1639-1673. ISSN 0022-2518. [consulted: 26 of July of 2026]. Available at: https://hdl.handle.net/2445/107046