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arXiv · 2405.17997

Local cone multipliers and Cauchy-Szego projections in bounded symmetric domains

Fernando Ballesta Yagüe·Gustavo Garrigós
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Abstract

We show that the cone multiplier satisfies local $L^p$-$L^q$ bounds only in the trivial range $1\leq q\leq 2\leq p\leq\infty$. To do so, we suitably adapt to this setting the proof of Fefferman for the ball multiplier. As a consequence we answer negatively a question by B\'ekoll\'e and Bonami (Colloq. Math. 68, 1995, 81-100), regarding the continuity from $L^p\to L^q$ of the Cauchy-Szeg\"o projections associated with a class of bounded symmetric domains in $\mathbb{C}^n$ with rank $r\geq2$.

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Fernando Ballesta Yagüe, Gustavo Garrigós. 2024-05-28. Local cone multipliers and Cauchy-Szego projections in bounded symmetric domains. https://arxiv.org/abs/2405.17997

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