Estimates for Riesz potential on weighted variable Hardy spaces revisited
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908624794681344 |
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| author | Rocha, Pablo |
| author_facet | Rocha, Pablo |
| contents | In [Math. Ineq. \& appl., Vol 26 (2) (2023), 511-530] and [Period. Math. Hung., 89 (1) (2024), 116-128], the present author proved that the Riesz potential $I_α$ extends to a bounded operator $H^{p(\cdot)}_ω(\mathbb{R}^n) \to L^{q(\cdot)}_ω(\mathbb{R}^n)$ and $H^{p(\cdot)}_ω(\mathbb{R}^n) \to H^{q(\cdot)}_ω(\mathbb{R}^n)$ respectively, under the following two assumptions:
$A1)$ $ω\in \mathcal{W}_{q(\cdot)}$ with $q(\cdot) \in \mathcal{P}^{\log}(\mathbb{R}^{n})$ and $\frac{1}{p(\cdot)} := \frac{1}{q(\cdot)} + \fracα{n}$;
$A2)$ for every cube $Q \subset \mathbb{R}^{n}$, $\| χ_Q \|_{L^{q(\cdot)}_ω} \approx |Q|^{-α/n} \| χ_Q \|_{L^{p(\cdot)}_ω}$.
In this note, we re-establish such estimates for $I_α$ without assuming the hypothesis $A2)$. These proofs are simpler than the previous ones. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2511_01102 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Estimates for Riesz potential on weighted variable Hardy spaces revisited Rocha, Pablo Classical Analysis and ODEs In [Math. Ineq. \& appl., Vol 26 (2) (2023), 511-530] and [Period. Math. Hung., 89 (1) (2024), 116-128], the present author proved that the Riesz potential $I_α$ extends to a bounded operator $H^{p(\cdot)}_ω(\mathbb{R}^n) \to L^{q(\cdot)}_ω(\mathbb{R}^n)$ and $H^{p(\cdot)}_ω(\mathbb{R}^n) \to H^{q(\cdot)}_ω(\mathbb{R}^n)$ respectively, under the following two assumptions: $A1)$ $ω\in \mathcal{W}_{q(\cdot)}$ with $q(\cdot) \in \mathcal{P}^{\log}(\mathbb{R}^{n})$ and $\frac{1}{p(\cdot)} := \frac{1}{q(\cdot)} + \fracα{n}$; $A2)$ for every cube $Q \subset \mathbb{R}^{n}$, $\| χ_Q \|_{L^{q(\cdot)}_ω} \approx |Q|^{-α/n} \| χ_Q \|_{L^{p(\cdot)}_ω}$. In this note, we re-establish such estimates for $I_α$ without assuming the hypothesis $A2)$. These proofs are simpler than the previous ones. |
| title | Estimates for Riesz potential on weighted variable Hardy spaces revisited |
| topic | Classical Analysis and ODEs |
| url | https://arxiv.org/abs/2511.01102 |