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On an Extension Problem for Polynomials.

Authors :
Bakonyi, Mihály
Timotin, Dan
Source :
Bulletin of the London Mathematical Society; Oct2001, Vol. 33 Issue 5, p599-605, 7p
Publication Year :
2001

Abstract

Consider the following problem: given complex numbers a1, …, an, find an L∞ function f of minimum norm whose Fourier coefficients ck(f) are equal to ak for k between 0 and n. We show the uniqueness of this function, and we estimate its norm. The operator-valued case is also discussed. 2000 Mathematics Subject Classification 30E05, 47A20, 47A56, 47A57. [ABSTRACT FROM PUBLISHER]

Details

Language :
English
ISSN :
00246093
Volume :
33
Issue :
5
Database :
Complementary Index
Journal :
Bulletin of the London Mathematical Society
Publication Type :
Academic Journal
Accession number :
80058975
Full Text :
https://doi.org/10.1112/S0024609301008268