Functional models and asymptotically orthonormal sequences
نویسندگان
چکیده
منابع مشابه
Uncertainty principles for orthonormal sequences
The aim of this paper is to provide complementary quantitative extensions of two results of H.S. Shapiro on the time-frequency concentration of orthonormal sequences in L2(R). More precisely, Shapiro proved that if the elements of an orthonormal sequence and their Fourier transforms are all pointwise bounded by a fixed function in L2(R) then the sequence is finite. In a related result, Shapiro ...
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ژورنال
عنوان ژورنال: Annales de l’institut Fourier
سال: 2003
ISSN: 0373-0956
DOI: 10.5802/aif.1987