2017/12/06 by Owais Ahmad, Ahmad, Owais, Firdous A. Shah +1
Computer Science · Mathematics · #11S85 #42C15 #42C40 #43A70 #Digital Filter Design and Implementation #FOS: Mathematics #Functional Analysis (math.FA) #Image and Signal Denoising Methods #Mathematical Analysis and Transform Methods
paper · pdf · doi:10.48550/arxiv.1712.02058
openalex publication_date 2017/12/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A generalization of Mallat's classic theory of multiresolution analysis based on the theory of spectral pairs was considered by Gabardo and Nashed (J. Funct. Anal. 158, 209-241, 1998). In this article, we introduce the notion of biorthgonoal nonuniform multiresolution analysis on the spectrum Λ=\0, r/N\+2\mathbb Z, where N≥ 1 is an integer and r is an odd integer with 1≤ r≤ 2N-1 such that r and N are relatively prime. We first establish the necessary and sufficient conditions for the translates of a single function to form the Riesz bases for their closed linear span. We provide the complete characterization for the biorthogonality of the translates of scaling functions of two nonuniform multiresolution analysis and the associated biorthogonal wavelet families. Furthermore, under the mild assumptions on the scaling functions and the corresponding wavelets associated with nonuniform multiresolution analysis, we show that the wavelets can generate Reisz bases.