dorsal/arxiv
View SchemaBoundedness of bilinear radial Fourier multipliers
| Authors | Petr Honzík, Matyáš Maleček |
|---|---|
| Categories | |
| ArXiv ID | 2601.09412vv1 |
| URL | https://arxiv.org/abs/2601.09412 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
We show that a bilinear radial Fourier multiplier operator with symbol $\sigma$ is $L^2(\R^n)\times L^2(\R^n) \to L^1(\R^n)$ bounded, $n\in \mathbb N,$ if the function $\sigma$ satisfies the smoothness condition $\sigma(2^j\cdot)\Phi\in L^2_{1/2 +\epsilon}(\mathbb R^{2n})$ for some $\epsilon>0$ and every $j\in \mathbb Z,$ where $\Phi$ is a smooth cutoff function adapted to the annulus $|x|\in [1/4,4]$. This condition is dimension free. We also apply similar reasoning to provide alternative proof of the initial result concerning multilinear Bochner-Riesz operator and prove an estimate for generalized bilinear Bochner-Riesz operator.
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"abstract": "We show that a bilinear radial Fourier multiplier operator with symbol $\\sigma$ is $L^2(\\R^n)\\times L^2(\\R^n) \\to L^1(\\R^n)$ bounded, $n\\in \\mathbb N,$ if the function $\\sigma$ satisfies the smoothness condition $\\sigma(2^j\\cdot)\\Phi\\in L^2_{1/2 +\\epsilon}(\\mathbb R^{2n})$ for some $\\epsilon\u003e0$ and every $j\\in \\mathbb Z,$ where $\\Phi$ is a smooth cutoff function adapted to the annulus $|x|\\in [1/4,4]$. This condition is dimension free. We also apply similar reasoning to provide alternative proof of the initial result concerning multilinear Bochner-Riesz operator and prove an estimate for generalized bilinear Bochner-Riesz operator.",
"arxiv_id": "2601.09412",
"authors": [
"Petr Honz\u00edk",
"Maty\u00e1\u0161 Male\u010dek"
],
"categories": [
"math.CA"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "Boundedness of bilinear radial Fourier multipliers",
"url": "https://arxiv.org/abs/2601.09412",
"version": "v1"
},
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