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arXiv · 2609.08603

On the contractivity of the Riesz projection

Xiangdi Fu·Dilong Li
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Abstract

This note presents a proof that the Riesz projection is contractive from $L^q$ to $L^{4(1-1/q)}$ for the case $1<q<\infty$. This fills in the previously unresolved parameter range of a conjecture of Brevig, Ortega-Cerd\`a, Seip, and Zhao.

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Xiangdi Fu, Dilong Li. 2026-09-08. On the contractivity of the Riesz projection. https://arxiv.org/abs/2609.08603

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