Abstract
Let \(\lambda \in (-\frac{1}{2},\infty )\), and \(\{\mathcal {W}_{t}^{\lambda }\}_{t>0}\) be the heat semigroup related to the Bessel Schrödinger operator \(S_{\lambda }:=-\frac{d^2}{dx^2}+\frac{\lambda ^2-\lambda }{x^2}\) on \(\mathbb {R}_{+}:=(0, \infty )\). The authors introduce the weighted Morrey–Campanato space \(\mathrm{BMO^\alpha (\mathbb {R}_{+}, \omega )}\) with \(\alpha \in [0, 1)\) and \(\omega \in A_{\infty }(\mathbb {R}_{+})\), and show that for any weight function \(\omega \in RH_{s^{\prime }}(\mathbb {R}_{+})\cap A_{p/s}(\mathbb {R}_{+})\), the oscillation, variation, radial maximal operator, and maximal operator of difference associated with the family \(\{t^m\partial _t^m\mathcal {W}_{t}^{\lambda }\}_{t>0}\) are bounded from \(\mathrm{BMO^\alpha (\mathbb {R}_{+}, \omega )}\) to its subspace \(\mathrm{BLO^\alpha (\mathbb {R}_{+}, \omega )}\), where \(\lambda \in \mathbb {R}_{+}\), \(m\in {\mathbb {N}}\cup \{0\}\), \(p\in (1,\infty )\), \(s\in [1,p)\) such that \(p/s+\alpha <1+\min \{1,\lambda \}\), and \(s^{\prime }\) denotes the conjugate exponent of s. These results are new even in the case of \(\omega \equiv 1\). As a corollary, the boundedness of these operators on spaces \(\mathrm{BMO^\alpha (\mathbb {R}_{+}, \omega )}\) is further established.
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Acknowledgements
The authors would like to thank the referee for her/his careful reading and many helpful comments that indeed improve the presentation of this article. Jorge J. Betancor is partially supported by grant PID2019-110712GB-I00. Huoxiong Wu is supported by the NNSF of China (Grant Nos. 12171399 and 12271041). Dongyong Yang (Corresponding author) is supported by the NNSF of China (Grant No. 11971402) and Fundamental Research Funds for Central Universities of China (Grant No. 20720210031).
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Hu, W., Betancor, J.J., Liu, S. et al. Boundedness of Operators on Weighted Morrey–Campanato Spaces in the Bessel Setting. J Geom Anal 34, 72 (2024). https://doi.org/10.1007/s12220-023-01510-8
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DOI: https://doi.org/10.1007/s12220-023-01510-8