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Indicator functions with uniformly bounded Fourier sums and large gaps in the spectrum. / Кисляков, Сергей Витальевич; Перстнева, Полина Сергеевна.
In: Journal of Fourier Analysis and Applications, Vol. 27, No. 2, 33, 04.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Indicator functions with uniformly bounded Fourier sums and large gaps in the spectrum
AU - Кисляков, Сергей Витальевич
AU - Перстнева, Полина Сергеевна
PY - 2021/4
Y1 - 2021/4
N2 - Indicator functions mentioned in the title are constructed on an arbitrary nondiscrete locally compact Abelian group of finite dimension. Moreover, they can be obtained by small perturbation from any indicator function fixed beforehand. In the case of a noncompact group, the term “Fourier sums” should be understood as “partial Fourier integrals”. A certain weighted version of the result is also provided. This version leads to a new Men ′shov-type correction theorem.
AB - Indicator functions mentioned in the title are constructed on an arbitrary nondiscrete locally compact Abelian group of finite dimension. Moreover, they can be obtained by small perturbation from any indicator function fixed beforehand. In the case of a noncompact group, the term “Fourier sums” should be understood as “partial Fourier integrals”. A certain weighted version of the result is also provided. This version leads to a new Men ′shov-type correction theorem.
KW - Uncertainty principle
KW - Men‘shov correction theorem
KW - Thin spectrum
KW - Men‘shov correction theorem
KW - Thin spectrum
KW - Uncertainty principle
KW - Primary 43A25
KW - Men'shov correction theorem
KW - 43A50
UR - http://www.scopus.com/inward/record.url?scp=85103937940&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/8be9f217-e87e-3f82-a8d0-ea5cba3a11b0/
U2 - 10.1007/s00041-021-09840-3
DO - 10.1007/s00041-021-09840-3
M3 - Article
VL - 27
JO - Journal of Fourier Analysis and Applications
JF - Journal of Fourier Analysis and Applications
SN - 1069-5869
IS - 2
M1 - 33
ER -
ID: 75798224