Spectral algorithms in higher-order Fourier analysis

Bibliographic Details
Title: Spectral algorithms in higher-order Fourier analysis
Authors: Candela, Pablo, González-Sánchez, Diego, Szegedy, Balázs
Publication Year: 2025
Collection: Mathematics
Subject Terms: Mathematics - Combinatorics, Mathematics - Spectral Theory
More Details: Our goal is to provide simple and practical algorithms in higher-order Fourier analysis which are based on spectral decompositions of operators. We propose a general framework for such algorithms and provide a detailed analysis of the quadratic case. Our results reveal new spectral aspects of the theory underlying higher-order Fourier analysis. Along these lines, we prove new inverse and regularity theorems for the Gowers norms based on higher-order character decompositions. Using these results, we prove a spectral inverse theorem and a spectral regularity theorem in quadratic Fourier analysis.
Comment: 71 pages
Document Type: Working Paper
Access URL: http://arxiv.org/abs/2501.12287
Accession Number: edsarx.2501.12287
Database: arXiv
More Details
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