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The beurling-malliavin multiplier theorem and its analogs for the de branges spaces. / Belov, Y.; Havin, V.
Operator Theory. Springer Nature, 2015. стр. 581-607.Результаты исследований: Публикации в книгах, отчётах, сборниках, трудах конференций › глава/раздел › научная
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TY - CHAP
T1 - The beurling-malliavin multiplier theorem and its analogs for the de branges spaces
AU - Belov, Y.
AU - Havin, V.
PY - 2015
Y1 - 2015
N2 - © Springer Basel 2015. All rights are reserved. Let ω be a non-negative function on R. Is it true that there exists a non-zero f from a given space of entire functions X satisfying (a) |f|≤ω or (b) |f| = ω? The classical Beurling-MalliavinMultiplier Theorem corresponds to (a) and the classical Paley-Wiener space as X. This is a survey of recent results for the case when X is a de Branges space H.E/. Numerous answers mainly depend on the behavior of the phase function of the generating function E. For example, if argE is regular, then for any even positive ! non-increasing on [0;∞) with log! Ε L1((1 + x2/-1dx) there exists a non-zero f Ε H(E) such that |f| ≤ |E|ω. This is no longer true for the irregular case. The Toeplitz kernel approach to these problems is discussed. This method was recently developed by N. Makarov and A. Poltoratski.
AB - © Springer Basel 2015. All rights are reserved. Let ω be a non-negative function on R. Is it true that there exists a non-zero f from a given space of entire functions X satisfying (a) |f|≤ω or (b) |f| = ω? The classical Beurling-MalliavinMultiplier Theorem corresponds to (a) and the classical Paley-Wiener space as X. This is a survey of recent results for the case when X is a de Branges space H.E/. Numerous answers mainly depend on the behavior of the phase function of the generating function E. For example, if argE is regular, then for any even positive ! non-increasing on [0;∞) with log! Ε L1((1 + x2/-1dx) there exists a non-zero f Ε H(E) such that |f| ≤ |E|ω. This is no longer true for the irregular case. The Toeplitz kernel approach to these problems is discussed. This method was recently developed by N. Makarov and A. Poltoratski.
U2 - 10.1007/978-3-0348-0667-1_2
DO - 10.1007/978-3-0348-0667-1_2
M3 - Chapter
SN - 9783034806671; 9783034806664
SP - 581
EP - 607
BT - Operator Theory
PB - Springer Nature
ER -
ID: 3988614