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Wavelet expansions and asymptotic behavior of distributions
Authors:Katerina Saneva
Institution:a Faculty of Electrical Engineering and Information Technologies, University ‘Ss. Cyril and Methodius’, Karpos 2 bb, 1000 Skopje, Macedonia
b Department of Pure Mathematics and Computer Algebra, Ghent University, Krijgslaan 281 Gebouw S22, B 9000 Gent, Belgium
Abstract:We develop a distribution wavelet expansion theory for the space of highly time-frequency localized test functions over the real line S0(R)⊂S(R) and its dual space View the MathML source, namely, the quotient of the space of tempered distributions modulo polynomials. We prove that the wavelet expansions of tempered distributions converge in View the MathML source. A characterization of boundedness and convergence in View the MathML source is obtained in terms of wavelet coefficients. Our results are then applied to study local and non-local asymptotic properties of Schwartz distributions via wavelet expansions. We provide Abelian and Tauberian type results relating the asymptotic behavior of tempered distributions with the asymptotics of wavelet coefficients.
Keywords:Orthogonal wavelets  Wavelet coefficients  Abelian theorems  Tauberian theorems  Distributions  Quasiasymptotics  Slowly varying functions  Asymptotic behavior of generalized functions
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