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Flat Littlewood polynomials exist

Abstract:
We show that there exist absolute constants Ξ”>𝛿>0 such that, for all 𝑛β‰₯2, there exists a polynomial 𝑃 of degree 𝑛, with coefficients in {βˆ’1,1}, such that π›Ώπ‘›βˆšβ‰€|𝑃(𝑧)|β‰€Ξ”π‘›βˆš for all π‘§βˆˆβ„‚ with |𝑧|=1. This confirms a conjecture of Littlewood from 1966.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.4007/annals.2020.192.3.6

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Oxford college:
Wadham College
Role:
Author
ORCID:
0000-0003-2696-0352


Publisher:
Mathematical Sciences Publishers
Journal:
Annals of Mathematics More from this journal
Volume:
192
Issue:
3
Pages:
977-1004
Publication date:
2020-11-09
Acceptance date:
2020-09-17
DOI:
ISSN:
0003-486X


Language:
English
Keywords:
Pubs id:
1131645
Local pid:
pubs:1131645
Deposit date:
2020-09-17

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