A1 Refereed original research article in a scientific journal

Fourier uniformity of bounded multiplicative functions in short intervals on average




AuthorsKaisa Matomäki, Maksym Radziwiłł, Terence Tao

PublisherSpringer New York LLC

Publication year2020

JournalInventiones Mathematicae

Journal name in sourceInventiones Mathematicae

Volume220

First page 1

Last page58

eISSN1432-1297

DOIhttps://doi.org/10.1007/s00222-019-00926-w

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/44132506


Abstract

Let   λ  denote the Liouville function. We show that as   X→∞ ,

∫2XXsupα∣∣∣∣∑x

for all   H≥Xθ  with   θ>0  fixed but arbitrarily small. Previously, this was only known for   θ>5/8 . For smaller values of   θ  this is the first “non-trivial” case of local Fourier uniformity on average at this scale. We also obtain the analogous statement for (non-pretentious) 1-bounded multiplicative functions. We illustrate the strength of the result by obtaining cancellations in the sum of   λ(n)Λ(n+h)Λ(n+2h)  over the ranges   h


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Last updated on 2024-26-11 at 20:36