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arXiv · 2205.06028

Titchmarsh theorems on Damek-Ricci spaces via moduli of continuity of higher order

Manoj Kumar·Vishvesh Kumar·Michael Ruzhansky
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Abstract

A classical theorem of Titchmarsh relates the $L^2$-Lipschitz functions and decay of the Fourier transform of the functions. In this note, we prove the Titchmarsh theorem for Damek-Ricci space (also known as harmonic $NA$ groups) via moduli of continuity of higher orders. We also prove an analogue of another Titchmarsh theorem which provides integrability properties of the Fourier transform for functions in the H\"older Lipschitz spaces.

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Manoj Kumar, Vishvesh Kumar, Michael Ruzhansky. 2022-05-12. Titchmarsh theorems on Damek-Ricci spaces via moduli of continuity of higher order. https://arxiv.org/abs/2205.06028

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