dorsal/arxiv
View SchemaLebesgue points of measures and non tangential convergence of Poisson-Hermite integrals
| Authors | Guillermo Flores, Gustavo Garrigós, Beatriz Viviani |
|---|---|
| Categories | |
| ArXiv ID | 2601.07063vv1 |
| URL | https://arxiv.org/abs/2601.07063 |
| DOI | 10.1007/s00028-025-01079-5 |
| Journal | Journal of Evolution Equations 25, 50 (2025) |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
We study differentiability conditions on a complex measure $\nu$ at a point $x_0\in\mathbb{R}^d$, in relation with the boundary convergence at that point of the Poisson-type integral $P_t\nu=e^{-t\sqrt L}\nu$, where $L=-\Delta+|x|^2$ is the Hermite operator. In particular, we show that $x_0$ is a Lebesgue point for $\nu$ iff a slightly stronger notion than non-tangential convergence holds for $P_t\nu$ at $x_0$. We also show non-tangential convergence when $x_0$ is a $\sigma$-point of $\nu$, a weaker notion than Lebesgue point, which for $d=1$ coincides with the classical Fatou condition.
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"abstract": "We study differentiability conditions on a complex measure $\\nu$ at a point $x_0\\in\\mathbb{R}^d$, in relation with the boundary convergence at that point of the Poisson-type integral $P_t\\nu=e^{-t\\sqrt L}\\nu$, where $L=-\\Delta+|x|^2$ is the Hermite operator. In particular, we show that $x_0$ is a Lebesgue point for $\\nu$ iff a slightly stronger notion than non-tangential convergence holds for $P_t\\nu$ at $x_0$. We also show non-tangential convergence when $x_0$ is a $\\sigma$-point of $\\nu$, a weaker notion than Lebesgue point, which for $d=1$ coincides with the classical Fatou condition.",
"arxiv_id": "2601.07063",
"authors": [
"Guillermo Flores",
"Gustavo Garrig\u00f3s",
"Beatriz Viviani"
],
"categories": [
"math.AP",
"math.CA"
],
"doi": "10.1007/s00028-025-01079-5",
"journal_ref": "Journal of Evolution Equations 25, 50 (2025)",
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Lebesgue points of measures and non tangential convergence of Poisson-Hermite integrals",
"url": "https://arxiv.org/abs/2601.07063",
"version": "v1"
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