Dunkl--BMO functions representable in terms of generalized balayage of Carleson measures and an application
Year: 2026
Type: preprint
Abstract: We characterize compactly supported functions $f$ in Dunkl--BMO spaces as those that can be written as \begin{equation*} f=g+\widetilde{S}_{μ,\mathcal{P}}, \end{equation*} the sum of some bounded function $g$ and the generalized balayage $\widetilde{S}_{μ,\mathcal{P}}$ of a Carleson measure on $\mathbb{R}^{N}\times(0,\infty)$ associated with the Dunkl--Poisson semigroup. As a direct application of this representation of Dunkl--BMO functions, we establish a new characterization of the Hardy space in the Dunkl setting via a principal value integral related to $\widetilde{S}_{μ,\mathcal{P}}$. Moreover, analogous conclusions hold for the Dunkl--heat semigroup as well.
Source: arXiv (Cornell University)
Author: Guo, Qingdong
Language: English
Subfield: Applied Mathematics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7220714716